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Intelligent Glazed Facades - an experimental study
Frederik V Winther
PhD Fellow
fvwcivilaaudk
Aalborg University
Department of Civil Engineering
08-10-2011 1 wwwzebaaudk
Future maximum energy demand in The Danish Building Regulation
0 kWhmsup2
20 kWhmsup2
40 kWhmsup2
60 kWhmsup2
80 kWhmsup2
100 kWhmsup2
BR08 2010 2015 2020 ZEB
08-10-2011 wwwzebaaudk 2
Zero Energy Buildings
bull ZEB ndash A ZEB is non grid connected building fully matching its
annual energy needsconsumption by on-site generation fully based on renewables
bull Net ZEB ndash A Net ZEB is a grid connected energy efficient building
that balances its total annual operating energy needs consumption and associated carbon emissions by on-site feed-in credits Focus of the on-site generation is matching the on-site load
bull Net ZE Cluster
ndash A Net ZE cluster is a network of buildings fulfilling the Net ZE definition not on the level of each building but a cluster of buildings using the identical energy infrastructure The clusters uses benefits from the economy of scale and levelling out the load and generation profiles of each building
08-10-2011 wwwzebaaudk
Source Per Heiselberg Aalborg Universitet
3
Reduction of Energy Demand - Typical energy distribution (2009)
bull A typical distribution of the energy demand for modern office buildings in 2009
ndash U-value 15 Wmsup2K
ndash G-value 06
ndash 30 windowarea in relation to floor area
bull Energy Demand
ndash 96 kWhmsup2 pr aringr
Cooling
Heating
Lighting
Ventilati
on
Misc
Cooling Heating
Lighting Ventilation
Misc
08-10-2011 wwwzebaaudk 4
Intelligent Glazed Facades - Static Facade Solutions
08-10-2011 wwwzebaaudk
bull Technologies
ndash Multiple layered glazing systems
ndash Refined gas in cavity
ndash Composite materials with low conductivity
ndash Solar reflective coatings with high selectivity
ndash hellip
5
Intelligent Glazed Facades - Static Facade Solutions
0 kWhmsup2
20 kWhmsup2
40 kWhmsup2
60 kWhmsup2
80 kWhmsup2
100 kWhmsup2
Basis Be06 U-vaeligrdi 15 G-vaeligrdi 06 Lt-vaeligrdi 07 Lt-kontrol M
hellip+lowU U-vaeligrdi 07 G-vaeligrdi 06 Lt-vaeligrdi 07 Lt-kontrol M
hellip+lowG U-vaeligrdi 07 G-vaeligrdi 025 Lt-vaeligrdi 03 Lt-kontrol M
hellip+IntLight U-vaeligrdi 07 G-vaeligrdi 025 Lt-vaeligrdi 03 Lt-kontrol K
Misc
Ventilation Plant
Lighting
Heating
Cooling
BR08
2010
2015
2020
08-10-2011 wwwzebaaudk 6 Published Winther FV Heiselberg P Jensen RL 2010
Intelligent Glazed Facades for fulfillment of future energy regulations 3rd Nordic Passive House Conference
Intelligent Glazed Facades - Correlation
-Sampling method Latin Hypercube
-Post Processing Sensitivity Analysis - PEAR
08-10-2011 7 wwwzebaaudk
Heating Cooling Total
divide
I
nfl
uen
ce
+
Heat capacity Envelope area U-value
g-value SFP factor Heat recovery
Cooling efficiency
Intelligent Glazed Facades - Dynamic Facade Solutions
08-10-2011 wwwzebaaudk
bull The intelligent glazed facade shall control the
ndash Heat transfer
ndash Irradiance
ndash Energy storage
ndash Mass transport
ndash Lighting level
8
What is an Intelligent Glazed Facade in practice
08-10-2011 wwwzebaaudk 9
Intelligent Glazed Facades - Dynamic Facade Solutions
0 kWhmsup2
20 kWhmsup2
40 kWhmsup2
60 kWhmsup2
80 kWhmsup2
100 kWhmsup2
Basis U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 21 Lt-kontrol M
Termisk Let
hellip+dynU-val U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 21 Lt-kontrol M
Termisk Let
hellip+dynG-val U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 21 Lt-kontrol M
Termisk Let
hellip+DCVent U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 05 Lt-kontrol M
Termisk Let
hellip+LightCtrl U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 05 Lt-kontrol K
Termisk Let
hellip+E-Storage U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 05 Lt-kontrol K
Termisk Tung
hellip+airtightness
Misc
Ventilation Plant
Lighting
Heating
Cooling
BR08
BR10
BR15
BR20
08-10-2011 wwwzebaaudk 10 Published Winther FV Heiselberg P Jensen RL 2010
Intelligent Glazed Facades for fulfillment of future energy regulations 3rd Nordic Passive House Conference
Intelligent Glazed Facades - General model
08-10-2011 11 wwwzebaaudk
Model development - 2 layered glazing
08-10-2011 wwwzebaaudk 12
10
15
20
25
30
35
40
10-02-11 11-02-11 12-02-11 13-02-11 14-02-11 15-02-11 16-02-11 17-02-11 18-02-11
Tem
peratu
re (
C)
Experiment BSim IES FVW final
Rsup2=085 (energi) - FVW Rsup2=096 (temperatur) - FVW
Not published Do not cite
Model development - Dynamic U-value
08-10-2011 wwwzebaaudk 13
Inde Ude
Glass Cavity Shutter
aconvcav
esurf
aconvcav
etech
Uwin
Uwin
Rtech aconvamb
etech
troom
(4) tsurf
(1) tcavity
(2) ttech
(3) ttech tamb
tsky
cavity
cavityamb
dyn
T
ttHHgP
Ld
nB
dL
zA
A
BPAAQ
10
22
3
2
51
12
2
42^
Source Air flow through cracks PH Baker S Sharples IC Ward Building and Environment SBi Anvisning 202
Model development - 2 layered glazing amp polystyrene
08-10-2011 wwwzebaaudk 14
-20
0
20
40
60
80
100
120
140
10-02-11 11-02-11 12-02-11 13-02-11 14-02-11 15-02-11 16-02-11 17-02-11 18-02-11
Tem
peratu
re (
C)
Experiment FVW initial FVW final
Rsup2=097 (energi) - FVW Rsup2=096 (temperatur) - FVW
Not published Do not cite
Model development - Dynamic U-value
08-10-2011 wwwzebaaudk 15
00 Wmsup2K
03 Wmsup2K
06 Wmsup2K
09 Wmsup2K
12 Wmsup2K
15 Wmsup2K
18 Wmsup2K
21 Wmsup2K
24 Wmsup2K
27 Wmsup2K
000 msup2KW 030 msup2KW 060 msup2KW 090 msup2KW 120 msup2KW 150 msup2KW
To
tal U
-valu
e
Heat resistance
08 Wmsup2K
15 Wmsup2K
21 Wmsup2K
27 Wmsup2K
R(l=0018WmKe=002m)=111 msup2KW
R(l=0039WmKe=005m)=128 msup2KW
R(l=0039WmKe=010m)=256 msup2KW
Not published Do not cite
Model development - Dynamic U-value
08-10-2011 wwwzebaaudk 16
000 msup2KW
030 msup2KW
060 msup2KW
090 msup2KW
120 msup2KW
150 msup2KW
000 ls pr msup2 050 ls pr msup2 100 ls pr msup2 150 ls pr msup2 200 ls pr msup2 250 ls pr msup2
Heat
resis
tan
ce
Crack flow
0010 m
0020 m
0050 m
0075 m
0100 m
Not published Do not cite
Model development - Dynamic g-value
BSim IES-VE
08-10-2011 wwwzebaaudk 17
Fs(ashs)=Fs(00)
Fs(4010)=Fs(1040)
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 18
-170
-130
-90
-50
-10
30
70
110
150 000
010
020
030
040
050
060
070
080
090
100
60
50
40
30
20
10
0
10
20
30
40
50
60
as-af
Fs
hs-gf
090-100
080-090
070-080
060-070
050-060
040-050
030-040
020-030
010-020
000-010
Not published Do not cite
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 19
DESIGN OPTIMIZATION OF A CONTEMPORARY HIGH PERFORMANCE SHADING SCREEN- INTEGRATION OF lsquoFORMrsquo AND SIMULATION TOOLS
Azadeh Omidfar Proceedings of Building Simulation 2011 12th Conference of International Building Performance Simulation Association Sydney 14-16 November
08-10-2011 wwwzebaaudk 20
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 21
Inde Ude
Glass Cavity Shading
aconvcav
esurf
aconvcav
etech
Uwin
Uwin
Rtech
Fs vs
tsol sol sol
aconvamb
etech
troom
(4) tsurf
(1) tcavity
(2) ttech
(3) ttech tamb
tsky
Experimental setup - PCM in glazing
08-10-2011 wwwzebaaudk 22
Model development - PCM in glazing
08-10-2011 wwwzebaaudk 23 Not published Do not cite
Energy balance for glazing - Potential in glazing systems
liquidliquidsolid
melt
k
radk
i
k
i
TT
Ti
aaaa
2
14tan2
1
1
1What are the optical
properties under different phases
000
020
040
060
080
100
120
297
2972
5
2975
2977
5
298
2982
5
2985
2987
5
299
2992
5
2995
2997
5
300
3002
5
3005
3007
5
301
3012
5
3015
3017
5
302
Absorbtion Abs1 Abs2 Abs3 Tsol Rfsol
08-10-2011 24 wwwzebaaudk Not published Do not cite
Energy balance for glazing - Potential in glazing systems
Room temperature 24 degC
PCM Glass
3 Layered Glass
08-10-2011 25 wwwzebaaudk Not published Do not cite
Energy balance for glazing - Potential in glazing systems
bull Use of PCM with high phase change temperature can reduce maximum cooling load ndash hellip Reduced view when
material is translucent
bull Use of PCM with low
phase change temperature can reduce heat load ndash hellip Risk of the material
not changing phase during daytime hours
08-10-2011 wwwzebaaudk 26
Intelligent Glazed Facades - Conclusion
08-10-2011 wwwzebaaudk 27
bull Focus should not only be put on
ndash U-value
ndash g-values
bull hellip but on how the faccedilade can change characteristic eg ndash High U-value to low
U-value ndash High g-value to low
g-value
Intelligent Glazed Facades - Discussion Design process
08-10-2011 wwwzebaaudk 28
Intelligent Glazed Facades - Discussion Benefits amp flaws
bull These results show that modern office buildings which fulfil energy regulations from 2008 can minimize energy demand for building services by 76 by introducing dynamic faccedilade technologies
bull But a flaw in the technologies and the used control strategies will result in no energy savings
08-10-2011 wwwzebaaudk 29
Intelligent Glazed Facades - an experimental study
Frederik V Winther
PhD Fellow
fvwcivilaaudk
Aalborg University
Department of Civil Engineering
08-10-2011 30 wwwzebaaudk
Future maximum energy demand in The Danish Building Regulation
0 kWhmsup2
20 kWhmsup2
40 kWhmsup2
60 kWhmsup2
80 kWhmsup2
100 kWhmsup2
BR08 2010 2015 2020 ZEB
08-10-2011 wwwzebaaudk 2
Zero Energy Buildings
bull ZEB ndash A ZEB is non grid connected building fully matching its
annual energy needsconsumption by on-site generation fully based on renewables
bull Net ZEB ndash A Net ZEB is a grid connected energy efficient building
that balances its total annual operating energy needs consumption and associated carbon emissions by on-site feed-in credits Focus of the on-site generation is matching the on-site load
bull Net ZE Cluster
ndash A Net ZE cluster is a network of buildings fulfilling the Net ZE definition not on the level of each building but a cluster of buildings using the identical energy infrastructure The clusters uses benefits from the economy of scale and levelling out the load and generation profiles of each building
08-10-2011 wwwzebaaudk
Source Per Heiselberg Aalborg Universitet
3
Reduction of Energy Demand - Typical energy distribution (2009)
bull A typical distribution of the energy demand for modern office buildings in 2009
ndash U-value 15 Wmsup2K
ndash G-value 06
ndash 30 windowarea in relation to floor area
bull Energy Demand
ndash 96 kWhmsup2 pr aringr
Cooling
Heating
Lighting
Ventilati
on
Misc
Cooling Heating
Lighting Ventilation
Misc
08-10-2011 wwwzebaaudk 4
Intelligent Glazed Facades - Static Facade Solutions
08-10-2011 wwwzebaaudk
bull Technologies
ndash Multiple layered glazing systems
ndash Refined gas in cavity
ndash Composite materials with low conductivity
ndash Solar reflective coatings with high selectivity
ndash hellip
5
Intelligent Glazed Facades - Static Facade Solutions
0 kWhmsup2
20 kWhmsup2
40 kWhmsup2
60 kWhmsup2
80 kWhmsup2
100 kWhmsup2
Basis Be06 U-vaeligrdi 15 G-vaeligrdi 06 Lt-vaeligrdi 07 Lt-kontrol M
hellip+lowU U-vaeligrdi 07 G-vaeligrdi 06 Lt-vaeligrdi 07 Lt-kontrol M
hellip+lowG U-vaeligrdi 07 G-vaeligrdi 025 Lt-vaeligrdi 03 Lt-kontrol M
hellip+IntLight U-vaeligrdi 07 G-vaeligrdi 025 Lt-vaeligrdi 03 Lt-kontrol K
Misc
Ventilation Plant
Lighting
Heating
Cooling
BR08
2010
2015
2020
08-10-2011 wwwzebaaudk 6 Published Winther FV Heiselberg P Jensen RL 2010
Intelligent Glazed Facades for fulfillment of future energy regulations 3rd Nordic Passive House Conference
Intelligent Glazed Facades - Correlation
-Sampling method Latin Hypercube
-Post Processing Sensitivity Analysis - PEAR
08-10-2011 7 wwwzebaaudk
Heating Cooling Total
divide
I
nfl
uen
ce
+
Heat capacity Envelope area U-value
g-value SFP factor Heat recovery
Cooling efficiency
Intelligent Glazed Facades - Dynamic Facade Solutions
08-10-2011 wwwzebaaudk
bull The intelligent glazed facade shall control the
ndash Heat transfer
ndash Irradiance
ndash Energy storage
ndash Mass transport
ndash Lighting level
8
What is an Intelligent Glazed Facade in practice
08-10-2011 wwwzebaaudk 9
Intelligent Glazed Facades - Dynamic Facade Solutions
0 kWhmsup2
20 kWhmsup2
40 kWhmsup2
60 kWhmsup2
80 kWhmsup2
100 kWhmsup2
Basis U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 21 Lt-kontrol M
Termisk Let
hellip+dynU-val U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 21 Lt-kontrol M
Termisk Let
hellip+dynG-val U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 21 Lt-kontrol M
Termisk Let
hellip+DCVent U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 05 Lt-kontrol M
Termisk Let
hellip+LightCtrl U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 05 Lt-kontrol K
Termisk Let
hellip+E-Storage U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 05 Lt-kontrol K
Termisk Tung
hellip+airtightness
Misc
Ventilation Plant
Lighting
Heating
Cooling
BR08
BR10
BR15
BR20
08-10-2011 wwwzebaaudk 10 Published Winther FV Heiselberg P Jensen RL 2010
Intelligent Glazed Facades for fulfillment of future energy regulations 3rd Nordic Passive House Conference
Intelligent Glazed Facades - General model
08-10-2011 11 wwwzebaaudk
Model development - 2 layered glazing
08-10-2011 wwwzebaaudk 12
10
15
20
25
30
35
40
10-02-11 11-02-11 12-02-11 13-02-11 14-02-11 15-02-11 16-02-11 17-02-11 18-02-11
Tem
peratu
re (
C)
Experiment BSim IES FVW final
Rsup2=085 (energi) - FVW Rsup2=096 (temperatur) - FVW
Not published Do not cite
Model development - Dynamic U-value
08-10-2011 wwwzebaaudk 13
Inde Ude
Glass Cavity Shutter
aconvcav
esurf
aconvcav
etech
Uwin
Uwin
Rtech aconvamb
etech
troom
(4) tsurf
(1) tcavity
(2) ttech
(3) ttech tamb
tsky
cavity
cavityamb
dyn
T
ttHHgP
Ld
nB
dL
zA
A
BPAAQ
10
22
3
2
51
12
2
42^
Source Air flow through cracks PH Baker S Sharples IC Ward Building and Environment SBi Anvisning 202
Model development - 2 layered glazing amp polystyrene
08-10-2011 wwwzebaaudk 14
-20
0
20
40
60
80
100
120
140
10-02-11 11-02-11 12-02-11 13-02-11 14-02-11 15-02-11 16-02-11 17-02-11 18-02-11
Tem
peratu
re (
C)
Experiment FVW initial FVW final
Rsup2=097 (energi) - FVW Rsup2=096 (temperatur) - FVW
Not published Do not cite
Model development - Dynamic U-value
08-10-2011 wwwzebaaudk 15
00 Wmsup2K
03 Wmsup2K
06 Wmsup2K
09 Wmsup2K
12 Wmsup2K
15 Wmsup2K
18 Wmsup2K
21 Wmsup2K
24 Wmsup2K
27 Wmsup2K
000 msup2KW 030 msup2KW 060 msup2KW 090 msup2KW 120 msup2KW 150 msup2KW
To
tal U
-valu
e
Heat resistance
08 Wmsup2K
15 Wmsup2K
21 Wmsup2K
27 Wmsup2K
R(l=0018WmKe=002m)=111 msup2KW
R(l=0039WmKe=005m)=128 msup2KW
R(l=0039WmKe=010m)=256 msup2KW
Not published Do not cite
Model development - Dynamic U-value
08-10-2011 wwwzebaaudk 16
000 msup2KW
030 msup2KW
060 msup2KW
090 msup2KW
120 msup2KW
150 msup2KW
000 ls pr msup2 050 ls pr msup2 100 ls pr msup2 150 ls pr msup2 200 ls pr msup2 250 ls pr msup2
Heat
resis
tan
ce
Crack flow
0010 m
0020 m
0050 m
0075 m
0100 m
Not published Do not cite
Model development - Dynamic g-value
BSim IES-VE
08-10-2011 wwwzebaaudk 17
Fs(ashs)=Fs(00)
Fs(4010)=Fs(1040)
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 18
-170
-130
-90
-50
-10
30
70
110
150 000
010
020
030
040
050
060
070
080
090
100
60
50
40
30
20
10
0
10
20
30
40
50
60
as-af
Fs
hs-gf
090-100
080-090
070-080
060-070
050-060
040-050
030-040
020-030
010-020
000-010
Not published Do not cite
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 19
DESIGN OPTIMIZATION OF A CONTEMPORARY HIGH PERFORMANCE SHADING SCREEN- INTEGRATION OF lsquoFORMrsquo AND SIMULATION TOOLS
Azadeh Omidfar Proceedings of Building Simulation 2011 12th Conference of International Building Performance Simulation Association Sydney 14-16 November
08-10-2011 wwwzebaaudk 20
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 21
Inde Ude
Glass Cavity Shading
aconvcav
esurf
aconvcav
etech
Uwin
Uwin
Rtech
Fs vs
tsol sol sol
aconvamb
etech
troom
(4) tsurf
(1) tcavity
(2) ttech
(3) ttech tamb
tsky
Experimental setup - PCM in glazing
08-10-2011 wwwzebaaudk 22
Model development - PCM in glazing
08-10-2011 wwwzebaaudk 23 Not published Do not cite
Energy balance for glazing - Potential in glazing systems
liquidliquidsolid
melt
k
radk
i
k
i
TT
Ti
aaaa
2
14tan2
1
1
1What are the optical
properties under different phases
000
020
040
060
080
100
120
297
2972
5
2975
2977
5
298
2982
5
2985
2987
5
299
2992
5
2995
2997
5
300
3002
5
3005
3007
5
301
3012
5
3015
3017
5
302
Absorbtion Abs1 Abs2 Abs3 Tsol Rfsol
08-10-2011 24 wwwzebaaudk Not published Do not cite
Energy balance for glazing - Potential in glazing systems
Room temperature 24 degC
PCM Glass
3 Layered Glass
08-10-2011 25 wwwzebaaudk Not published Do not cite
Energy balance for glazing - Potential in glazing systems
bull Use of PCM with high phase change temperature can reduce maximum cooling load ndash hellip Reduced view when
material is translucent
bull Use of PCM with low
phase change temperature can reduce heat load ndash hellip Risk of the material
not changing phase during daytime hours
08-10-2011 wwwzebaaudk 26
Intelligent Glazed Facades - Conclusion
08-10-2011 wwwzebaaudk 27
bull Focus should not only be put on
ndash U-value
ndash g-values
bull hellip but on how the faccedilade can change characteristic eg ndash High U-value to low
U-value ndash High g-value to low
g-value
Intelligent Glazed Facades - Discussion Design process
08-10-2011 wwwzebaaudk 28
Intelligent Glazed Facades - Discussion Benefits amp flaws
bull These results show that modern office buildings which fulfil energy regulations from 2008 can minimize energy demand for building services by 76 by introducing dynamic faccedilade technologies
bull But a flaw in the technologies and the used control strategies will result in no energy savings
08-10-2011 wwwzebaaudk 29
Intelligent Glazed Facades - an experimental study
Frederik V Winther
PhD Fellow
fvwcivilaaudk
Aalborg University
Department of Civil Engineering
08-10-2011 30 wwwzebaaudk
Zero Energy Buildings
bull ZEB ndash A ZEB is non grid connected building fully matching its
annual energy needsconsumption by on-site generation fully based on renewables
bull Net ZEB ndash A Net ZEB is a grid connected energy efficient building
that balances its total annual operating energy needs consumption and associated carbon emissions by on-site feed-in credits Focus of the on-site generation is matching the on-site load
bull Net ZE Cluster
ndash A Net ZE cluster is a network of buildings fulfilling the Net ZE definition not on the level of each building but a cluster of buildings using the identical energy infrastructure The clusters uses benefits from the economy of scale and levelling out the load and generation profiles of each building
08-10-2011 wwwzebaaudk
Source Per Heiselberg Aalborg Universitet
3
Reduction of Energy Demand - Typical energy distribution (2009)
bull A typical distribution of the energy demand for modern office buildings in 2009
ndash U-value 15 Wmsup2K
ndash G-value 06
ndash 30 windowarea in relation to floor area
bull Energy Demand
ndash 96 kWhmsup2 pr aringr
Cooling
Heating
Lighting
Ventilati
on
Misc
Cooling Heating
Lighting Ventilation
Misc
08-10-2011 wwwzebaaudk 4
Intelligent Glazed Facades - Static Facade Solutions
08-10-2011 wwwzebaaudk
bull Technologies
ndash Multiple layered glazing systems
ndash Refined gas in cavity
ndash Composite materials with low conductivity
ndash Solar reflective coatings with high selectivity
ndash hellip
5
Intelligent Glazed Facades - Static Facade Solutions
0 kWhmsup2
20 kWhmsup2
40 kWhmsup2
60 kWhmsup2
80 kWhmsup2
100 kWhmsup2
Basis Be06 U-vaeligrdi 15 G-vaeligrdi 06 Lt-vaeligrdi 07 Lt-kontrol M
hellip+lowU U-vaeligrdi 07 G-vaeligrdi 06 Lt-vaeligrdi 07 Lt-kontrol M
hellip+lowG U-vaeligrdi 07 G-vaeligrdi 025 Lt-vaeligrdi 03 Lt-kontrol M
hellip+IntLight U-vaeligrdi 07 G-vaeligrdi 025 Lt-vaeligrdi 03 Lt-kontrol K
Misc
Ventilation Plant
Lighting
Heating
Cooling
BR08
2010
2015
2020
08-10-2011 wwwzebaaudk 6 Published Winther FV Heiselberg P Jensen RL 2010
Intelligent Glazed Facades for fulfillment of future energy regulations 3rd Nordic Passive House Conference
Intelligent Glazed Facades - Correlation
-Sampling method Latin Hypercube
-Post Processing Sensitivity Analysis - PEAR
08-10-2011 7 wwwzebaaudk
Heating Cooling Total
divide
I
nfl
uen
ce
+
Heat capacity Envelope area U-value
g-value SFP factor Heat recovery
Cooling efficiency
Intelligent Glazed Facades - Dynamic Facade Solutions
08-10-2011 wwwzebaaudk
bull The intelligent glazed facade shall control the
ndash Heat transfer
ndash Irradiance
ndash Energy storage
ndash Mass transport
ndash Lighting level
8
What is an Intelligent Glazed Facade in practice
08-10-2011 wwwzebaaudk 9
Intelligent Glazed Facades - Dynamic Facade Solutions
0 kWhmsup2
20 kWhmsup2
40 kWhmsup2
60 kWhmsup2
80 kWhmsup2
100 kWhmsup2
Basis U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 21 Lt-kontrol M
Termisk Let
hellip+dynU-val U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 21 Lt-kontrol M
Termisk Let
hellip+dynG-val U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 21 Lt-kontrol M
Termisk Let
hellip+DCVent U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 05 Lt-kontrol M
Termisk Let
hellip+LightCtrl U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 05 Lt-kontrol K
Termisk Let
hellip+E-Storage U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 05 Lt-kontrol K
Termisk Tung
hellip+airtightness
Misc
Ventilation Plant
Lighting
Heating
Cooling
BR08
BR10
BR15
BR20
08-10-2011 wwwzebaaudk 10 Published Winther FV Heiselberg P Jensen RL 2010
Intelligent Glazed Facades for fulfillment of future energy regulations 3rd Nordic Passive House Conference
Intelligent Glazed Facades - General model
08-10-2011 11 wwwzebaaudk
Model development - 2 layered glazing
08-10-2011 wwwzebaaudk 12
10
15
20
25
30
35
40
10-02-11 11-02-11 12-02-11 13-02-11 14-02-11 15-02-11 16-02-11 17-02-11 18-02-11
Tem
peratu
re (
C)
Experiment BSim IES FVW final
Rsup2=085 (energi) - FVW Rsup2=096 (temperatur) - FVW
Not published Do not cite
Model development - Dynamic U-value
08-10-2011 wwwzebaaudk 13
Inde Ude
Glass Cavity Shutter
aconvcav
esurf
aconvcav
etech
Uwin
Uwin
Rtech aconvamb
etech
troom
(4) tsurf
(1) tcavity
(2) ttech
(3) ttech tamb
tsky
cavity
cavityamb
dyn
T
ttHHgP
Ld
nB
dL
zA
A
BPAAQ
10
22
3
2
51
12
2
42^
Source Air flow through cracks PH Baker S Sharples IC Ward Building and Environment SBi Anvisning 202
Model development - 2 layered glazing amp polystyrene
08-10-2011 wwwzebaaudk 14
-20
0
20
40
60
80
100
120
140
10-02-11 11-02-11 12-02-11 13-02-11 14-02-11 15-02-11 16-02-11 17-02-11 18-02-11
Tem
peratu
re (
C)
Experiment FVW initial FVW final
Rsup2=097 (energi) - FVW Rsup2=096 (temperatur) - FVW
Not published Do not cite
Model development - Dynamic U-value
08-10-2011 wwwzebaaudk 15
00 Wmsup2K
03 Wmsup2K
06 Wmsup2K
09 Wmsup2K
12 Wmsup2K
15 Wmsup2K
18 Wmsup2K
21 Wmsup2K
24 Wmsup2K
27 Wmsup2K
000 msup2KW 030 msup2KW 060 msup2KW 090 msup2KW 120 msup2KW 150 msup2KW
To
tal U
-valu
e
Heat resistance
08 Wmsup2K
15 Wmsup2K
21 Wmsup2K
27 Wmsup2K
R(l=0018WmKe=002m)=111 msup2KW
R(l=0039WmKe=005m)=128 msup2KW
R(l=0039WmKe=010m)=256 msup2KW
Not published Do not cite
Model development - Dynamic U-value
08-10-2011 wwwzebaaudk 16
000 msup2KW
030 msup2KW
060 msup2KW
090 msup2KW
120 msup2KW
150 msup2KW
000 ls pr msup2 050 ls pr msup2 100 ls pr msup2 150 ls pr msup2 200 ls pr msup2 250 ls pr msup2
Heat
resis
tan
ce
Crack flow
0010 m
0020 m
0050 m
0075 m
0100 m
Not published Do not cite
Model development - Dynamic g-value
BSim IES-VE
08-10-2011 wwwzebaaudk 17
Fs(ashs)=Fs(00)
Fs(4010)=Fs(1040)
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 18
-170
-130
-90
-50
-10
30
70
110
150 000
010
020
030
040
050
060
070
080
090
100
60
50
40
30
20
10
0
10
20
30
40
50
60
as-af
Fs
hs-gf
090-100
080-090
070-080
060-070
050-060
040-050
030-040
020-030
010-020
000-010
Not published Do not cite
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 19
DESIGN OPTIMIZATION OF A CONTEMPORARY HIGH PERFORMANCE SHADING SCREEN- INTEGRATION OF lsquoFORMrsquo AND SIMULATION TOOLS
Azadeh Omidfar Proceedings of Building Simulation 2011 12th Conference of International Building Performance Simulation Association Sydney 14-16 November
08-10-2011 wwwzebaaudk 20
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 21
Inde Ude
Glass Cavity Shading
aconvcav
esurf
aconvcav
etech
Uwin
Uwin
Rtech
Fs vs
tsol sol sol
aconvamb
etech
troom
(4) tsurf
(1) tcavity
(2) ttech
(3) ttech tamb
tsky
Experimental setup - PCM in glazing
08-10-2011 wwwzebaaudk 22
Model development - PCM in glazing
08-10-2011 wwwzebaaudk 23 Not published Do not cite
Energy balance for glazing - Potential in glazing systems
liquidliquidsolid
melt
k
radk
i
k
i
TT
Ti
aaaa
2
14tan2
1
1
1What are the optical
properties under different phases
000
020
040
060
080
100
120
297
2972
5
2975
2977
5
298
2982
5
2985
2987
5
299
2992
5
2995
2997
5
300
3002
5
3005
3007
5
301
3012
5
3015
3017
5
302
Absorbtion Abs1 Abs2 Abs3 Tsol Rfsol
08-10-2011 24 wwwzebaaudk Not published Do not cite
Energy balance for glazing - Potential in glazing systems
Room temperature 24 degC
PCM Glass
3 Layered Glass
08-10-2011 25 wwwzebaaudk Not published Do not cite
Energy balance for glazing - Potential in glazing systems
bull Use of PCM with high phase change temperature can reduce maximum cooling load ndash hellip Reduced view when
material is translucent
bull Use of PCM with low
phase change temperature can reduce heat load ndash hellip Risk of the material
not changing phase during daytime hours
08-10-2011 wwwzebaaudk 26
Intelligent Glazed Facades - Conclusion
08-10-2011 wwwzebaaudk 27
bull Focus should not only be put on
ndash U-value
ndash g-values
bull hellip but on how the faccedilade can change characteristic eg ndash High U-value to low
U-value ndash High g-value to low
g-value
Intelligent Glazed Facades - Discussion Design process
08-10-2011 wwwzebaaudk 28
Intelligent Glazed Facades - Discussion Benefits amp flaws
bull These results show that modern office buildings which fulfil energy regulations from 2008 can minimize energy demand for building services by 76 by introducing dynamic faccedilade technologies
bull But a flaw in the technologies and the used control strategies will result in no energy savings
08-10-2011 wwwzebaaudk 29
Intelligent Glazed Facades - an experimental study
Frederik V Winther
PhD Fellow
fvwcivilaaudk
Aalborg University
Department of Civil Engineering
08-10-2011 30 wwwzebaaudk
Reduction of Energy Demand - Typical energy distribution (2009)
bull A typical distribution of the energy demand for modern office buildings in 2009
ndash U-value 15 Wmsup2K
ndash G-value 06
ndash 30 windowarea in relation to floor area
bull Energy Demand
ndash 96 kWhmsup2 pr aringr
Cooling
Heating
Lighting
Ventilati
on
Misc
Cooling Heating
Lighting Ventilation
Misc
08-10-2011 wwwzebaaudk 4
Intelligent Glazed Facades - Static Facade Solutions
08-10-2011 wwwzebaaudk
bull Technologies
ndash Multiple layered glazing systems
ndash Refined gas in cavity
ndash Composite materials with low conductivity
ndash Solar reflective coatings with high selectivity
ndash hellip
5
Intelligent Glazed Facades - Static Facade Solutions
0 kWhmsup2
20 kWhmsup2
40 kWhmsup2
60 kWhmsup2
80 kWhmsup2
100 kWhmsup2
Basis Be06 U-vaeligrdi 15 G-vaeligrdi 06 Lt-vaeligrdi 07 Lt-kontrol M
hellip+lowU U-vaeligrdi 07 G-vaeligrdi 06 Lt-vaeligrdi 07 Lt-kontrol M
hellip+lowG U-vaeligrdi 07 G-vaeligrdi 025 Lt-vaeligrdi 03 Lt-kontrol M
hellip+IntLight U-vaeligrdi 07 G-vaeligrdi 025 Lt-vaeligrdi 03 Lt-kontrol K
Misc
Ventilation Plant
Lighting
Heating
Cooling
BR08
2010
2015
2020
08-10-2011 wwwzebaaudk 6 Published Winther FV Heiselberg P Jensen RL 2010
Intelligent Glazed Facades for fulfillment of future energy regulations 3rd Nordic Passive House Conference
Intelligent Glazed Facades - Correlation
-Sampling method Latin Hypercube
-Post Processing Sensitivity Analysis - PEAR
08-10-2011 7 wwwzebaaudk
Heating Cooling Total
divide
I
nfl
uen
ce
+
Heat capacity Envelope area U-value
g-value SFP factor Heat recovery
Cooling efficiency
Intelligent Glazed Facades - Dynamic Facade Solutions
08-10-2011 wwwzebaaudk
bull The intelligent glazed facade shall control the
ndash Heat transfer
ndash Irradiance
ndash Energy storage
ndash Mass transport
ndash Lighting level
8
What is an Intelligent Glazed Facade in practice
08-10-2011 wwwzebaaudk 9
Intelligent Glazed Facades - Dynamic Facade Solutions
0 kWhmsup2
20 kWhmsup2
40 kWhmsup2
60 kWhmsup2
80 kWhmsup2
100 kWhmsup2
Basis U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 21 Lt-kontrol M
Termisk Let
hellip+dynU-val U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 21 Lt-kontrol M
Termisk Let
hellip+dynG-val U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 21 Lt-kontrol M
Termisk Let
hellip+DCVent U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 05 Lt-kontrol M
Termisk Let
hellip+LightCtrl U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 05 Lt-kontrol K
Termisk Let
hellip+E-Storage U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 05 Lt-kontrol K
Termisk Tung
hellip+airtightness
Misc
Ventilation Plant
Lighting
Heating
Cooling
BR08
BR10
BR15
BR20
08-10-2011 wwwzebaaudk 10 Published Winther FV Heiselberg P Jensen RL 2010
Intelligent Glazed Facades for fulfillment of future energy regulations 3rd Nordic Passive House Conference
Intelligent Glazed Facades - General model
08-10-2011 11 wwwzebaaudk
Model development - 2 layered glazing
08-10-2011 wwwzebaaudk 12
10
15
20
25
30
35
40
10-02-11 11-02-11 12-02-11 13-02-11 14-02-11 15-02-11 16-02-11 17-02-11 18-02-11
Tem
peratu
re (
C)
Experiment BSim IES FVW final
Rsup2=085 (energi) - FVW Rsup2=096 (temperatur) - FVW
Not published Do not cite
Model development - Dynamic U-value
08-10-2011 wwwzebaaudk 13
Inde Ude
Glass Cavity Shutter
aconvcav
esurf
aconvcav
etech
Uwin
Uwin
Rtech aconvamb
etech
troom
(4) tsurf
(1) tcavity
(2) ttech
(3) ttech tamb
tsky
cavity
cavityamb
dyn
T
ttHHgP
Ld
nB
dL
zA
A
BPAAQ
10
22
3
2
51
12
2
42^
Source Air flow through cracks PH Baker S Sharples IC Ward Building and Environment SBi Anvisning 202
Model development - 2 layered glazing amp polystyrene
08-10-2011 wwwzebaaudk 14
-20
0
20
40
60
80
100
120
140
10-02-11 11-02-11 12-02-11 13-02-11 14-02-11 15-02-11 16-02-11 17-02-11 18-02-11
Tem
peratu
re (
C)
Experiment FVW initial FVW final
Rsup2=097 (energi) - FVW Rsup2=096 (temperatur) - FVW
Not published Do not cite
Model development - Dynamic U-value
08-10-2011 wwwzebaaudk 15
00 Wmsup2K
03 Wmsup2K
06 Wmsup2K
09 Wmsup2K
12 Wmsup2K
15 Wmsup2K
18 Wmsup2K
21 Wmsup2K
24 Wmsup2K
27 Wmsup2K
000 msup2KW 030 msup2KW 060 msup2KW 090 msup2KW 120 msup2KW 150 msup2KW
To
tal U
-valu
e
Heat resistance
08 Wmsup2K
15 Wmsup2K
21 Wmsup2K
27 Wmsup2K
R(l=0018WmKe=002m)=111 msup2KW
R(l=0039WmKe=005m)=128 msup2KW
R(l=0039WmKe=010m)=256 msup2KW
Not published Do not cite
Model development - Dynamic U-value
08-10-2011 wwwzebaaudk 16
000 msup2KW
030 msup2KW
060 msup2KW
090 msup2KW
120 msup2KW
150 msup2KW
000 ls pr msup2 050 ls pr msup2 100 ls pr msup2 150 ls pr msup2 200 ls pr msup2 250 ls pr msup2
Heat
resis
tan
ce
Crack flow
0010 m
0020 m
0050 m
0075 m
0100 m
Not published Do not cite
Model development - Dynamic g-value
BSim IES-VE
08-10-2011 wwwzebaaudk 17
Fs(ashs)=Fs(00)
Fs(4010)=Fs(1040)
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 18
-170
-130
-90
-50
-10
30
70
110
150 000
010
020
030
040
050
060
070
080
090
100
60
50
40
30
20
10
0
10
20
30
40
50
60
as-af
Fs
hs-gf
090-100
080-090
070-080
060-070
050-060
040-050
030-040
020-030
010-020
000-010
Not published Do not cite
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 19
DESIGN OPTIMIZATION OF A CONTEMPORARY HIGH PERFORMANCE SHADING SCREEN- INTEGRATION OF lsquoFORMrsquo AND SIMULATION TOOLS
Azadeh Omidfar Proceedings of Building Simulation 2011 12th Conference of International Building Performance Simulation Association Sydney 14-16 November
08-10-2011 wwwzebaaudk 20
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 21
Inde Ude
Glass Cavity Shading
aconvcav
esurf
aconvcav
etech
Uwin
Uwin
Rtech
Fs vs
tsol sol sol
aconvamb
etech
troom
(4) tsurf
(1) tcavity
(2) ttech
(3) ttech tamb
tsky
Experimental setup - PCM in glazing
08-10-2011 wwwzebaaudk 22
Model development - PCM in glazing
08-10-2011 wwwzebaaudk 23 Not published Do not cite
Energy balance for glazing - Potential in glazing systems
liquidliquidsolid
melt
k
radk
i
k
i
TT
Ti
aaaa
2
14tan2
1
1
1What are the optical
properties under different phases
000
020
040
060
080
100
120
297
2972
5
2975
2977
5
298
2982
5
2985
2987
5
299
2992
5
2995
2997
5
300
3002
5
3005
3007
5
301
3012
5
3015
3017
5
302
Absorbtion Abs1 Abs2 Abs3 Tsol Rfsol
08-10-2011 24 wwwzebaaudk Not published Do not cite
Energy balance for glazing - Potential in glazing systems
Room temperature 24 degC
PCM Glass
3 Layered Glass
08-10-2011 25 wwwzebaaudk Not published Do not cite
Energy balance for glazing - Potential in glazing systems
bull Use of PCM with high phase change temperature can reduce maximum cooling load ndash hellip Reduced view when
material is translucent
bull Use of PCM with low
phase change temperature can reduce heat load ndash hellip Risk of the material
not changing phase during daytime hours
08-10-2011 wwwzebaaudk 26
Intelligent Glazed Facades - Conclusion
08-10-2011 wwwzebaaudk 27
bull Focus should not only be put on
ndash U-value
ndash g-values
bull hellip but on how the faccedilade can change characteristic eg ndash High U-value to low
U-value ndash High g-value to low
g-value
Intelligent Glazed Facades - Discussion Design process
08-10-2011 wwwzebaaudk 28
Intelligent Glazed Facades - Discussion Benefits amp flaws
bull These results show that modern office buildings which fulfil energy regulations from 2008 can minimize energy demand for building services by 76 by introducing dynamic faccedilade technologies
bull But a flaw in the technologies and the used control strategies will result in no energy savings
08-10-2011 wwwzebaaudk 29
Intelligent Glazed Facades - an experimental study
Frederik V Winther
PhD Fellow
fvwcivilaaudk
Aalborg University
Department of Civil Engineering
08-10-2011 30 wwwzebaaudk
Intelligent Glazed Facades - Static Facade Solutions
08-10-2011 wwwzebaaudk
bull Technologies
ndash Multiple layered glazing systems
ndash Refined gas in cavity
ndash Composite materials with low conductivity
ndash Solar reflective coatings with high selectivity
ndash hellip
5
Intelligent Glazed Facades - Static Facade Solutions
0 kWhmsup2
20 kWhmsup2
40 kWhmsup2
60 kWhmsup2
80 kWhmsup2
100 kWhmsup2
Basis Be06 U-vaeligrdi 15 G-vaeligrdi 06 Lt-vaeligrdi 07 Lt-kontrol M
hellip+lowU U-vaeligrdi 07 G-vaeligrdi 06 Lt-vaeligrdi 07 Lt-kontrol M
hellip+lowG U-vaeligrdi 07 G-vaeligrdi 025 Lt-vaeligrdi 03 Lt-kontrol M
hellip+IntLight U-vaeligrdi 07 G-vaeligrdi 025 Lt-vaeligrdi 03 Lt-kontrol K
Misc
Ventilation Plant
Lighting
Heating
Cooling
BR08
2010
2015
2020
08-10-2011 wwwzebaaudk 6 Published Winther FV Heiselberg P Jensen RL 2010
Intelligent Glazed Facades for fulfillment of future energy regulations 3rd Nordic Passive House Conference
Intelligent Glazed Facades - Correlation
-Sampling method Latin Hypercube
-Post Processing Sensitivity Analysis - PEAR
08-10-2011 7 wwwzebaaudk
Heating Cooling Total
divide
I
nfl
uen
ce
+
Heat capacity Envelope area U-value
g-value SFP factor Heat recovery
Cooling efficiency
Intelligent Glazed Facades - Dynamic Facade Solutions
08-10-2011 wwwzebaaudk
bull The intelligent glazed facade shall control the
ndash Heat transfer
ndash Irradiance
ndash Energy storage
ndash Mass transport
ndash Lighting level
8
What is an Intelligent Glazed Facade in practice
08-10-2011 wwwzebaaudk 9
Intelligent Glazed Facades - Dynamic Facade Solutions
0 kWhmsup2
20 kWhmsup2
40 kWhmsup2
60 kWhmsup2
80 kWhmsup2
100 kWhmsup2
Basis U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 21 Lt-kontrol M
Termisk Let
hellip+dynU-val U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 21 Lt-kontrol M
Termisk Let
hellip+dynG-val U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 21 Lt-kontrol M
Termisk Let
hellip+DCVent U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 05 Lt-kontrol M
Termisk Let
hellip+LightCtrl U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 05 Lt-kontrol K
Termisk Let
hellip+E-Storage U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 05 Lt-kontrol K
Termisk Tung
hellip+airtightness
Misc
Ventilation Plant
Lighting
Heating
Cooling
BR08
BR10
BR15
BR20
08-10-2011 wwwzebaaudk 10 Published Winther FV Heiselberg P Jensen RL 2010
Intelligent Glazed Facades for fulfillment of future energy regulations 3rd Nordic Passive House Conference
Intelligent Glazed Facades - General model
08-10-2011 11 wwwzebaaudk
Model development - 2 layered glazing
08-10-2011 wwwzebaaudk 12
10
15
20
25
30
35
40
10-02-11 11-02-11 12-02-11 13-02-11 14-02-11 15-02-11 16-02-11 17-02-11 18-02-11
Tem
peratu
re (
C)
Experiment BSim IES FVW final
Rsup2=085 (energi) - FVW Rsup2=096 (temperatur) - FVW
Not published Do not cite
Model development - Dynamic U-value
08-10-2011 wwwzebaaudk 13
Inde Ude
Glass Cavity Shutter
aconvcav
esurf
aconvcav
etech
Uwin
Uwin
Rtech aconvamb
etech
troom
(4) tsurf
(1) tcavity
(2) ttech
(3) ttech tamb
tsky
cavity
cavityamb
dyn
T
ttHHgP
Ld
nB
dL
zA
A
BPAAQ
10
22
3
2
51
12
2
42^
Source Air flow through cracks PH Baker S Sharples IC Ward Building and Environment SBi Anvisning 202
Model development - 2 layered glazing amp polystyrene
08-10-2011 wwwzebaaudk 14
-20
0
20
40
60
80
100
120
140
10-02-11 11-02-11 12-02-11 13-02-11 14-02-11 15-02-11 16-02-11 17-02-11 18-02-11
Tem
peratu
re (
C)
Experiment FVW initial FVW final
Rsup2=097 (energi) - FVW Rsup2=096 (temperatur) - FVW
Not published Do not cite
Model development - Dynamic U-value
08-10-2011 wwwzebaaudk 15
00 Wmsup2K
03 Wmsup2K
06 Wmsup2K
09 Wmsup2K
12 Wmsup2K
15 Wmsup2K
18 Wmsup2K
21 Wmsup2K
24 Wmsup2K
27 Wmsup2K
000 msup2KW 030 msup2KW 060 msup2KW 090 msup2KW 120 msup2KW 150 msup2KW
To
tal U
-valu
e
Heat resistance
08 Wmsup2K
15 Wmsup2K
21 Wmsup2K
27 Wmsup2K
R(l=0018WmKe=002m)=111 msup2KW
R(l=0039WmKe=005m)=128 msup2KW
R(l=0039WmKe=010m)=256 msup2KW
Not published Do not cite
Model development - Dynamic U-value
08-10-2011 wwwzebaaudk 16
000 msup2KW
030 msup2KW
060 msup2KW
090 msup2KW
120 msup2KW
150 msup2KW
000 ls pr msup2 050 ls pr msup2 100 ls pr msup2 150 ls pr msup2 200 ls pr msup2 250 ls pr msup2
Heat
resis
tan
ce
Crack flow
0010 m
0020 m
0050 m
0075 m
0100 m
Not published Do not cite
Model development - Dynamic g-value
BSim IES-VE
08-10-2011 wwwzebaaudk 17
Fs(ashs)=Fs(00)
Fs(4010)=Fs(1040)
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 18
-170
-130
-90
-50
-10
30
70
110
150 000
010
020
030
040
050
060
070
080
090
100
60
50
40
30
20
10
0
10
20
30
40
50
60
as-af
Fs
hs-gf
090-100
080-090
070-080
060-070
050-060
040-050
030-040
020-030
010-020
000-010
Not published Do not cite
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 19
DESIGN OPTIMIZATION OF A CONTEMPORARY HIGH PERFORMANCE SHADING SCREEN- INTEGRATION OF lsquoFORMrsquo AND SIMULATION TOOLS
Azadeh Omidfar Proceedings of Building Simulation 2011 12th Conference of International Building Performance Simulation Association Sydney 14-16 November
08-10-2011 wwwzebaaudk 20
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 21
Inde Ude
Glass Cavity Shading
aconvcav
esurf
aconvcav
etech
Uwin
Uwin
Rtech
Fs vs
tsol sol sol
aconvamb
etech
troom
(4) tsurf
(1) tcavity
(2) ttech
(3) ttech tamb
tsky
Experimental setup - PCM in glazing
08-10-2011 wwwzebaaudk 22
Model development - PCM in glazing
08-10-2011 wwwzebaaudk 23 Not published Do not cite
Energy balance for glazing - Potential in glazing systems
liquidliquidsolid
melt
k
radk
i
k
i
TT
Ti
aaaa
2
14tan2
1
1
1What are the optical
properties under different phases
000
020
040
060
080
100
120
297
2972
5
2975
2977
5
298
2982
5
2985
2987
5
299
2992
5
2995
2997
5
300
3002
5
3005
3007
5
301
3012
5
3015
3017
5
302
Absorbtion Abs1 Abs2 Abs3 Tsol Rfsol
08-10-2011 24 wwwzebaaudk Not published Do not cite
Energy balance for glazing - Potential in glazing systems
Room temperature 24 degC
PCM Glass
3 Layered Glass
08-10-2011 25 wwwzebaaudk Not published Do not cite
Energy balance for glazing - Potential in glazing systems
bull Use of PCM with high phase change temperature can reduce maximum cooling load ndash hellip Reduced view when
material is translucent
bull Use of PCM with low
phase change temperature can reduce heat load ndash hellip Risk of the material
not changing phase during daytime hours
08-10-2011 wwwzebaaudk 26
Intelligent Glazed Facades - Conclusion
08-10-2011 wwwzebaaudk 27
bull Focus should not only be put on
ndash U-value
ndash g-values
bull hellip but on how the faccedilade can change characteristic eg ndash High U-value to low
U-value ndash High g-value to low
g-value
Intelligent Glazed Facades - Discussion Design process
08-10-2011 wwwzebaaudk 28
Intelligent Glazed Facades - Discussion Benefits amp flaws
bull These results show that modern office buildings which fulfil energy regulations from 2008 can minimize energy demand for building services by 76 by introducing dynamic faccedilade technologies
bull But a flaw in the technologies and the used control strategies will result in no energy savings
08-10-2011 wwwzebaaudk 29
Intelligent Glazed Facades - an experimental study
Frederik V Winther
PhD Fellow
fvwcivilaaudk
Aalborg University
Department of Civil Engineering
08-10-2011 30 wwwzebaaudk
Intelligent Glazed Facades - Static Facade Solutions
0 kWhmsup2
20 kWhmsup2
40 kWhmsup2
60 kWhmsup2
80 kWhmsup2
100 kWhmsup2
Basis Be06 U-vaeligrdi 15 G-vaeligrdi 06 Lt-vaeligrdi 07 Lt-kontrol M
hellip+lowU U-vaeligrdi 07 G-vaeligrdi 06 Lt-vaeligrdi 07 Lt-kontrol M
hellip+lowG U-vaeligrdi 07 G-vaeligrdi 025 Lt-vaeligrdi 03 Lt-kontrol M
hellip+IntLight U-vaeligrdi 07 G-vaeligrdi 025 Lt-vaeligrdi 03 Lt-kontrol K
Misc
Ventilation Plant
Lighting
Heating
Cooling
BR08
2010
2015
2020
08-10-2011 wwwzebaaudk 6 Published Winther FV Heiselberg P Jensen RL 2010
Intelligent Glazed Facades for fulfillment of future energy regulations 3rd Nordic Passive House Conference
Intelligent Glazed Facades - Correlation
-Sampling method Latin Hypercube
-Post Processing Sensitivity Analysis - PEAR
08-10-2011 7 wwwzebaaudk
Heating Cooling Total
divide
I
nfl
uen
ce
+
Heat capacity Envelope area U-value
g-value SFP factor Heat recovery
Cooling efficiency
Intelligent Glazed Facades - Dynamic Facade Solutions
08-10-2011 wwwzebaaudk
bull The intelligent glazed facade shall control the
ndash Heat transfer
ndash Irradiance
ndash Energy storage
ndash Mass transport
ndash Lighting level
8
What is an Intelligent Glazed Facade in practice
08-10-2011 wwwzebaaudk 9
Intelligent Glazed Facades - Dynamic Facade Solutions
0 kWhmsup2
20 kWhmsup2
40 kWhmsup2
60 kWhmsup2
80 kWhmsup2
100 kWhmsup2
Basis U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 21 Lt-kontrol M
Termisk Let
hellip+dynU-val U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 21 Lt-kontrol M
Termisk Let
hellip+dynG-val U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 21 Lt-kontrol M
Termisk Let
hellip+DCVent U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 05 Lt-kontrol M
Termisk Let
hellip+LightCtrl U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 05 Lt-kontrol K
Termisk Let
hellip+E-Storage U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 05 Lt-kontrol K
Termisk Tung
hellip+airtightness
Misc
Ventilation Plant
Lighting
Heating
Cooling
BR08
BR10
BR15
BR20
08-10-2011 wwwzebaaudk 10 Published Winther FV Heiselberg P Jensen RL 2010
Intelligent Glazed Facades for fulfillment of future energy regulations 3rd Nordic Passive House Conference
Intelligent Glazed Facades - General model
08-10-2011 11 wwwzebaaudk
Model development - 2 layered glazing
08-10-2011 wwwzebaaudk 12
10
15
20
25
30
35
40
10-02-11 11-02-11 12-02-11 13-02-11 14-02-11 15-02-11 16-02-11 17-02-11 18-02-11
Tem
peratu
re (
C)
Experiment BSim IES FVW final
Rsup2=085 (energi) - FVW Rsup2=096 (temperatur) - FVW
Not published Do not cite
Model development - Dynamic U-value
08-10-2011 wwwzebaaudk 13
Inde Ude
Glass Cavity Shutter
aconvcav
esurf
aconvcav
etech
Uwin
Uwin
Rtech aconvamb
etech
troom
(4) tsurf
(1) tcavity
(2) ttech
(3) ttech tamb
tsky
cavity
cavityamb
dyn
T
ttHHgP
Ld
nB
dL
zA
A
BPAAQ
10
22
3
2
51
12
2
42^
Source Air flow through cracks PH Baker S Sharples IC Ward Building and Environment SBi Anvisning 202
Model development - 2 layered glazing amp polystyrene
08-10-2011 wwwzebaaudk 14
-20
0
20
40
60
80
100
120
140
10-02-11 11-02-11 12-02-11 13-02-11 14-02-11 15-02-11 16-02-11 17-02-11 18-02-11
Tem
peratu
re (
C)
Experiment FVW initial FVW final
Rsup2=097 (energi) - FVW Rsup2=096 (temperatur) - FVW
Not published Do not cite
Model development - Dynamic U-value
08-10-2011 wwwzebaaudk 15
00 Wmsup2K
03 Wmsup2K
06 Wmsup2K
09 Wmsup2K
12 Wmsup2K
15 Wmsup2K
18 Wmsup2K
21 Wmsup2K
24 Wmsup2K
27 Wmsup2K
000 msup2KW 030 msup2KW 060 msup2KW 090 msup2KW 120 msup2KW 150 msup2KW
To
tal U
-valu
e
Heat resistance
08 Wmsup2K
15 Wmsup2K
21 Wmsup2K
27 Wmsup2K
R(l=0018WmKe=002m)=111 msup2KW
R(l=0039WmKe=005m)=128 msup2KW
R(l=0039WmKe=010m)=256 msup2KW
Not published Do not cite
Model development - Dynamic U-value
08-10-2011 wwwzebaaudk 16
000 msup2KW
030 msup2KW
060 msup2KW
090 msup2KW
120 msup2KW
150 msup2KW
000 ls pr msup2 050 ls pr msup2 100 ls pr msup2 150 ls pr msup2 200 ls pr msup2 250 ls pr msup2
Heat
resis
tan
ce
Crack flow
0010 m
0020 m
0050 m
0075 m
0100 m
Not published Do not cite
Model development - Dynamic g-value
BSim IES-VE
08-10-2011 wwwzebaaudk 17
Fs(ashs)=Fs(00)
Fs(4010)=Fs(1040)
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 18
-170
-130
-90
-50
-10
30
70
110
150 000
010
020
030
040
050
060
070
080
090
100
60
50
40
30
20
10
0
10
20
30
40
50
60
as-af
Fs
hs-gf
090-100
080-090
070-080
060-070
050-060
040-050
030-040
020-030
010-020
000-010
Not published Do not cite
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 19
DESIGN OPTIMIZATION OF A CONTEMPORARY HIGH PERFORMANCE SHADING SCREEN- INTEGRATION OF lsquoFORMrsquo AND SIMULATION TOOLS
Azadeh Omidfar Proceedings of Building Simulation 2011 12th Conference of International Building Performance Simulation Association Sydney 14-16 November
08-10-2011 wwwzebaaudk 20
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 21
Inde Ude
Glass Cavity Shading
aconvcav
esurf
aconvcav
etech
Uwin
Uwin
Rtech
Fs vs
tsol sol sol
aconvamb
etech
troom
(4) tsurf
(1) tcavity
(2) ttech
(3) ttech tamb
tsky
Experimental setup - PCM in glazing
08-10-2011 wwwzebaaudk 22
Model development - PCM in glazing
08-10-2011 wwwzebaaudk 23 Not published Do not cite
Energy balance for glazing - Potential in glazing systems
liquidliquidsolid
melt
k
radk
i
k
i
TT
Ti
aaaa
2
14tan2
1
1
1What are the optical
properties under different phases
000
020
040
060
080
100
120
297
2972
5
2975
2977
5
298
2982
5
2985
2987
5
299
2992
5
2995
2997
5
300
3002
5
3005
3007
5
301
3012
5
3015
3017
5
302
Absorbtion Abs1 Abs2 Abs3 Tsol Rfsol
08-10-2011 24 wwwzebaaudk Not published Do not cite
Energy balance for glazing - Potential in glazing systems
Room temperature 24 degC
PCM Glass
3 Layered Glass
08-10-2011 25 wwwzebaaudk Not published Do not cite
Energy balance for glazing - Potential in glazing systems
bull Use of PCM with high phase change temperature can reduce maximum cooling load ndash hellip Reduced view when
material is translucent
bull Use of PCM with low
phase change temperature can reduce heat load ndash hellip Risk of the material
not changing phase during daytime hours
08-10-2011 wwwzebaaudk 26
Intelligent Glazed Facades - Conclusion
08-10-2011 wwwzebaaudk 27
bull Focus should not only be put on
ndash U-value
ndash g-values
bull hellip but on how the faccedilade can change characteristic eg ndash High U-value to low
U-value ndash High g-value to low
g-value
Intelligent Glazed Facades - Discussion Design process
08-10-2011 wwwzebaaudk 28
Intelligent Glazed Facades - Discussion Benefits amp flaws
bull These results show that modern office buildings which fulfil energy regulations from 2008 can minimize energy demand for building services by 76 by introducing dynamic faccedilade technologies
bull But a flaw in the technologies and the used control strategies will result in no energy savings
08-10-2011 wwwzebaaudk 29
Intelligent Glazed Facades - an experimental study
Frederik V Winther
PhD Fellow
fvwcivilaaudk
Aalborg University
Department of Civil Engineering
08-10-2011 30 wwwzebaaudk
Intelligent Glazed Facades - Correlation
-Sampling method Latin Hypercube
-Post Processing Sensitivity Analysis - PEAR
08-10-2011 7 wwwzebaaudk
Heating Cooling Total
divide
I
nfl
uen
ce
+
Heat capacity Envelope area U-value
g-value SFP factor Heat recovery
Cooling efficiency
Intelligent Glazed Facades - Dynamic Facade Solutions
08-10-2011 wwwzebaaudk
bull The intelligent glazed facade shall control the
ndash Heat transfer
ndash Irradiance
ndash Energy storage
ndash Mass transport
ndash Lighting level
8
What is an Intelligent Glazed Facade in practice
08-10-2011 wwwzebaaudk 9
Intelligent Glazed Facades - Dynamic Facade Solutions
0 kWhmsup2
20 kWhmsup2
40 kWhmsup2
60 kWhmsup2
80 kWhmsup2
100 kWhmsup2
Basis U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 21 Lt-kontrol M
Termisk Let
hellip+dynU-val U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 21 Lt-kontrol M
Termisk Let
hellip+dynG-val U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 21 Lt-kontrol M
Termisk Let
hellip+DCVent U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 05 Lt-kontrol M
Termisk Let
hellip+LightCtrl U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 05 Lt-kontrol K
Termisk Let
hellip+E-Storage U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 05 Lt-kontrol K
Termisk Tung
hellip+airtightness
Misc
Ventilation Plant
Lighting
Heating
Cooling
BR08
BR10
BR15
BR20
08-10-2011 wwwzebaaudk 10 Published Winther FV Heiselberg P Jensen RL 2010
Intelligent Glazed Facades for fulfillment of future energy regulations 3rd Nordic Passive House Conference
Intelligent Glazed Facades - General model
08-10-2011 11 wwwzebaaudk
Model development - 2 layered glazing
08-10-2011 wwwzebaaudk 12
10
15
20
25
30
35
40
10-02-11 11-02-11 12-02-11 13-02-11 14-02-11 15-02-11 16-02-11 17-02-11 18-02-11
Tem
peratu
re (
C)
Experiment BSim IES FVW final
Rsup2=085 (energi) - FVW Rsup2=096 (temperatur) - FVW
Not published Do not cite
Model development - Dynamic U-value
08-10-2011 wwwzebaaudk 13
Inde Ude
Glass Cavity Shutter
aconvcav
esurf
aconvcav
etech
Uwin
Uwin
Rtech aconvamb
etech
troom
(4) tsurf
(1) tcavity
(2) ttech
(3) ttech tamb
tsky
cavity
cavityamb
dyn
T
ttHHgP
Ld
nB
dL
zA
A
BPAAQ
10
22
3
2
51
12
2
42^
Source Air flow through cracks PH Baker S Sharples IC Ward Building and Environment SBi Anvisning 202
Model development - 2 layered glazing amp polystyrene
08-10-2011 wwwzebaaudk 14
-20
0
20
40
60
80
100
120
140
10-02-11 11-02-11 12-02-11 13-02-11 14-02-11 15-02-11 16-02-11 17-02-11 18-02-11
Tem
peratu
re (
C)
Experiment FVW initial FVW final
Rsup2=097 (energi) - FVW Rsup2=096 (temperatur) - FVW
Not published Do not cite
Model development - Dynamic U-value
08-10-2011 wwwzebaaudk 15
00 Wmsup2K
03 Wmsup2K
06 Wmsup2K
09 Wmsup2K
12 Wmsup2K
15 Wmsup2K
18 Wmsup2K
21 Wmsup2K
24 Wmsup2K
27 Wmsup2K
000 msup2KW 030 msup2KW 060 msup2KW 090 msup2KW 120 msup2KW 150 msup2KW
To
tal U
-valu
e
Heat resistance
08 Wmsup2K
15 Wmsup2K
21 Wmsup2K
27 Wmsup2K
R(l=0018WmKe=002m)=111 msup2KW
R(l=0039WmKe=005m)=128 msup2KW
R(l=0039WmKe=010m)=256 msup2KW
Not published Do not cite
Model development - Dynamic U-value
08-10-2011 wwwzebaaudk 16
000 msup2KW
030 msup2KW
060 msup2KW
090 msup2KW
120 msup2KW
150 msup2KW
000 ls pr msup2 050 ls pr msup2 100 ls pr msup2 150 ls pr msup2 200 ls pr msup2 250 ls pr msup2
Heat
resis
tan
ce
Crack flow
0010 m
0020 m
0050 m
0075 m
0100 m
Not published Do not cite
Model development - Dynamic g-value
BSim IES-VE
08-10-2011 wwwzebaaudk 17
Fs(ashs)=Fs(00)
Fs(4010)=Fs(1040)
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 18
-170
-130
-90
-50
-10
30
70
110
150 000
010
020
030
040
050
060
070
080
090
100
60
50
40
30
20
10
0
10
20
30
40
50
60
as-af
Fs
hs-gf
090-100
080-090
070-080
060-070
050-060
040-050
030-040
020-030
010-020
000-010
Not published Do not cite
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 19
DESIGN OPTIMIZATION OF A CONTEMPORARY HIGH PERFORMANCE SHADING SCREEN- INTEGRATION OF lsquoFORMrsquo AND SIMULATION TOOLS
Azadeh Omidfar Proceedings of Building Simulation 2011 12th Conference of International Building Performance Simulation Association Sydney 14-16 November
08-10-2011 wwwzebaaudk 20
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 21
Inde Ude
Glass Cavity Shading
aconvcav
esurf
aconvcav
etech
Uwin
Uwin
Rtech
Fs vs
tsol sol sol
aconvamb
etech
troom
(4) tsurf
(1) tcavity
(2) ttech
(3) ttech tamb
tsky
Experimental setup - PCM in glazing
08-10-2011 wwwzebaaudk 22
Model development - PCM in glazing
08-10-2011 wwwzebaaudk 23 Not published Do not cite
Energy balance for glazing - Potential in glazing systems
liquidliquidsolid
melt
k
radk
i
k
i
TT
Ti
aaaa
2
14tan2
1
1
1What are the optical
properties under different phases
000
020
040
060
080
100
120
297
2972
5
2975
2977
5
298
2982
5
2985
2987
5
299
2992
5
2995
2997
5
300
3002
5
3005
3007
5
301
3012
5
3015
3017
5
302
Absorbtion Abs1 Abs2 Abs3 Tsol Rfsol
08-10-2011 24 wwwzebaaudk Not published Do not cite
Energy balance for glazing - Potential in glazing systems
Room temperature 24 degC
PCM Glass
3 Layered Glass
08-10-2011 25 wwwzebaaudk Not published Do not cite
Energy balance for glazing - Potential in glazing systems
bull Use of PCM with high phase change temperature can reduce maximum cooling load ndash hellip Reduced view when
material is translucent
bull Use of PCM with low
phase change temperature can reduce heat load ndash hellip Risk of the material
not changing phase during daytime hours
08-10-2011 wwwzebaaudk 26
Intelligent Glazed Facades - Conclusion
08-10-2011 wwwzebaaudk 27
bull Focus should not only be put on
ndash U-value
ndash g-values
bull hellip but on how the faccedilade can change characteristic eg ndash High U-value to low
U-value ndash High g-value to low
g-value
Intelligent Glazed Facades - Discussion Design process
08-10-2011 wwwzebaaudk 28
Intelligent Glazed Facades - Discussion Benefits amp flaws
bull These results show that modern office buildings which fulfil energy regulations from 2008 can minimize energy demand for building services by 76 by introducing dynamic faccedilade technologies
bull But a flaw in the technologies and the used control strategies will result in no energy savings
08-10-2011 wwwzebaaudk 29
Intelligent Glazed Facades - an experimental study
Frederik V Winther
PhD Fellow
fvwcivilaaudk
Aalborg University
Department of Civil Engineering
08-10-2011 30 wwwzebaaudk
Intelligent Glazed Facades - Dynamic Facade Solutions
08-10-2011 wwwzebaaudk
bull The intelligent glazed facade shall control the
ndash Heat transfer
ndash Irradiance
ndash Energy storage
ndash Mass transport
ndash Lighting level
8
What is an Intelligent Glazed Facade in practice
08-10-2011 wwwzebaaudk 9
Intelligent Glazed Facades - Dynamic Facade Solutions
0 kWhmsup2
20 kWhmsup2
40 kWhmsup2
60 kWhmsup2
80 kWhmsup2
100 kWhmsup2
Basis U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 21 Lt-kontrol M
Termisk Let
hellip+dynU-val U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 21 Lt-kontrol M
Termisk Let
hellip+dynG-val U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 21 Lt-kontrol M
Termisk Let
hellip+DCVent U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 05 Lt-kontrol M
Termisk Let
hellip+LightCtrl U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 05 Lt-kontrol K
Termisk Let
hellip+E-Storage U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 05 Lt-kontrol K
Termisk Tung
hellip+airtightness
Misc
Ventilation Plant
Lighting
Heating
Cooling
BR08
BR10
BR15
BR20
08-10-2011 wwwzebaaudk 10 Published Winther FV Heiselberg P Jensen RL 2010
Intelligent Glazed Facades for fulfillment of future energy regulations 3rd Nordic Passive House Conference
Intelligent Glazed Facades - General model
08-10-2011 11 wwwzebaaudk
Model development - 2 layered glazing
08-10-2011 wwwzebaaudk 12
10
15
20
25
30
35
40
10-02-11 11-02-11 12-02-11 13-02-11 14-02-11 15-02-11 16-02-11 17-02-11 18-02-11
Tem
peratu
re (
C)
Experiment BSim IES FVW final
Rsup2=085 (energi) - FVW Rsup2=096 (temperatur) - FVW
Not published Do not cite
Model development - Dynamic U-value
08-10-2011 wwwzebaaudk 13
Inde Ude
Glass Cavity Shutter
aconvcav
esurf
aconvcav
etech
Uwin
Uwin
Rtech aconvamb
etech
troom
(4) tsurf
(1) tcavity
(2) ttech
(3) ttech tamb
tsky
cavity
cavityamb
dyn
T
ttHHgP
Ld
nB
dL
zA
A
BPAAQ
10
22
3
2
51
12
2
42^
Source Air flow through cracks PH Baker S Sharples IC Ward Building and Environment SBi Anvisning 202
Model development - 2 layered glazing amp polystyrene
08-10-2011 wwwzebaaudk 14
-20
0
20
40
60
80
100
120
140
10-02-11 11-02-11 12-02-11 13-02-11 14-02-11 15-02-11 16-02-11 17-02-11 18-02-11
Tem
peratu
re (
C)
Experiment FVW initial FVW final
Rsup2=097 (energi) - FVW Rsup2=096 (temperatur) - FVW
Not published Do not cite
Model development - Dynamic U-value
08-10-2011 wwwzebaaudk 15
00 Wmsup2K
03 Wmsup2K
06 Wmsup2K
09 Wmsup2K
12 Wmsup2K
15 Wmsup2K
18 Wmsup2K
21 Wmsup2K
24 Wmsup2K
27 Wmsup2K
000 msup2KW 030 msup2KW 060 msup2KW 090 msup2KW 120 msup2KW 150 msup2KW
To
tal U
-valu
e
Heat resistance
08 Wmsup2K
15 Wmsup2K
21 Wmsup2K
27 Wmsup2K
R(l=0018WmKe=002m)=111 msup2KW
R(l=0039WmKe=005m)=128 msup2KW
R(l=0039WmKe=010m)=256 msup2KW
Not published Do not cite
Model development - Dynamic U-value
08-10-2011 wwwzebaaudk 16
000 msup2KW
030 msup2KW
060 msup2KW
090 msup2KW
120 msup2KW
150 msup2KW
000 ls pr msup2 050 ls pr msup2 100 ls pr msup2 150 ls pr msup2 200 ls pr msup2 250 ls pr msup2
Heat
resis
tan
ce
Crack flow
0010 m
0020 m
0050 m
0075 m
0100 m
Not published Do not cite
Model development - Dynamic g-value
BSim IES-VE
08-10-2011 wwwzebaaudk 17
Fs(ashs)=Fs(00)
Fs(4010)=Fs(1040)
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 18
-170
-130
-90
-50
-10
30
70
110
150 000
010
020
030
040
050
060
070
080
090
100
60
50
40
30
20
10
0
10
20
30
40
50
60
as-af
Fs
hs-gf
090-100
080-090
070-080
060-070
050-060
040-050
030-040
020-030
010-020
000-010
Not published Do not cite
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 19
DESIGN OPTIMIZATION OF A CONTEMPORARY HIGH PERFORMANCE SHADING SCREEN- INTEGRATION OF lsquoFORMrsquo AND SIMULATION TOOLS
Azadeh Omidfar Proceedings of Building Simulation 2011 12th Conference of International Building Performance Simulation Association Sydney 14-16 November
08-10-2011 wwwzebaaudk 20
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 21
Inde Ude
Glass Cavity Shading
aconvcav
esurf
aconvcav
etech
Uwin
Uwin
Rtech
Fs vs
tsol sol sol
aconvamb
etech
troom
(4) tsurf
(1) tcavity
(2) ttech
(3) ttech tamb
tsky
Experimental setup - PCM in glazing
08-10-2011 wwwzebaaudk 22
Model development - PCM in glazing
08-10-2011 wwwzebaaudk 23 Not published Do not cite
Energy balance for glazing - Potential in glazing systems
liquidliquidsolid
melt
k
radk
i
k
i
TT
Ti
aaaa
2
14tan2
1
1
1What are the optical
properties under different phases
000
020
040
060
080
100
120
297
2972
5
2975
2977
5
298
2982
5
2985
2987
5
299
2992
5
2995
2997
5
300
3002
5
3005
3007
5
301
3012
5
3015
3017
5
302
Absorbtion Abs1 Abs2 Abs3 Tsol Rfsol
08-10-2011 24 wwwzebaaudk Not published Do not cite
Energy balance for glazing - Potential in glazing systems
Room temperature 24 degC
PCM Glass
3 Layered Glass
08-10-2011 25 wwwzebaaudk Not published Do not cite
Energy balance for glazing - Potential in glazing systems
bull Use of PCM with high phase change temperature can reduce maximum cooling load ndash hellip Reduced view when
material is translucent
bull Use of PCM with low
phase change temperature can reduce heat load ndash hellip Risk of the material
not changing phase during daytime hours
08-10-2011 wwwzebaaudk 26
Intelligent Glazed Facades - Conclusion
08-10-2011 wwwzebaaudk 27
bull Focus should not only be put on
ndash U-value
ndash g-values
bull hellip but on how the faccedilade can change characteristic eg ndash High U-value to low
U-value ndash High g-value to low
g-value
Intelligent Glazed Facades - Discussion Design process
08-10-2011 wwwzebaaudk 28
Intelligent Glazed Facades - Discussion Benefits amp flaws
bull These results show that modern office buildings which fulfil energy regulations from 2008 can minimize energy demand for building services by 76 by introducing dynamic faccedilade technologies
bull But a flaw in the technologies and the used control strategies will result in no energy savings
08-10-2011 wwwzebaaudk 29
Intelligent Glazed Facades - an experimental study
Frederik V Winther
PhD Fellow
fvwcivilaaudk
Aalborg University
Department of Civil Engineering
08-10-2011 30 wwwzebaaudk
What is an Intelligent Glazed Facade in practice
08-10-2011 wwwzebaaudk 9
Intelligent Glazed Facades - Dynamic Facade Solutions
0 kWhmsup2
20 kWhmsup2
40 kWhmsup2
60 kWhmsup2
80 kWhmsup2
100 kWhmsup2
Basis U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 21 Lt-kontrol M
Termisk Let
hellip+dynU-val U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 21 Lt-kontrol M
Termisk Let
hellip+dynG-val U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 21 Lt-kontrol M
Termisk Let
hellip+DCVent U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 05 Lt-kontrol M
Termisk Let
hellip+LightCtrl U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 05 Lt-kontrol K
Termisk Let
hellip+E-Storage U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 05 Lt-kontrol K
Termisk Tung
hellip+airtightness
Misc
Ventilation Plant
Lighting
Heating
Cooling
BR08
BR10
BR15
BR20
08-10-2011 wwwzebaaudk 10 Published Winther FV Heiselberg P Jensen RL 2010
Intelligent Glazed Facades for fulfillment of future energy regulations 3rd Nordic Passive House Conference
Intelligent Glazed Facades - General model
08-10-2011 11 wwwzebaaudk
Model development - 2 layered glazing
08-10-2011 wwwzebaaudk 12
10
15
20
25
30
35
40
10-02-11 11-02-11 12-02-11 13-02-11 14-02-11 15-02-11 16-02-11 17-02-11 18-02-11
Tem
peratu
re (
C)
Experiment BSim IES FVW final
Rsup2=085 (energi) - FVW Rsup2=096 (temperatur) - FVW
Not published Do not cite
Model development - Dynamic U-value
08-10-2011 wwwzebaaudk 13
Inde Ude
Glass Cavity Shutter
aconvcav
esurf
aconvcav
etech
Uwin
Uwin
Rtech aconvamb
etech
troom
(4) tsurf
(1) tcavity
(2) ttech
(3) ttech tamb
tsky
cavity
cavityamb
dyn
T
ttHHgP
Ld
nB
dL
zA
A
BPAAQ
10
22
3
2
51
12
2
42^
Source Air flow through cracks PH Baker S Sharples IC Ward Building and Environment SBi Anvisning 202
Model development - 2 layered glazing amp polystyrene
08-10-2011 wwwzebaaudk 14
-20
0
20
40
60
80
100
120
140
10-02-11 11-02-11 12-02-11 13-02-11 14-02-11 15-02-11 16-02-11 17-02-11 18-02-11
Tem
peratu
re (
C)
Experiment FVW initial FVW final
Rsup2=097 (energi) - FVW Rsup2=096 (temperatur) - FVW
Not published Do not cite
Model development - Dynamic U-value
08-10-2011 wwwzebaaudk 15
00 Wmsup2K
03 Wmsup2K
06 Wmsup2K
09 Wmsup2K
12 Wmsup2K
15 Wmsup2K
18 Wmsup2K
21 Wmsup2K
24 Wmsup2K
27 Wmsup2K
000 msup2KW 030 msup2KW 060 msup2KW 090 msup2KW 120 msup2KW 150 msup2KW
To
tal U
-valu
e
Heat resistance
08 Wmsup2K
15 Wmsup2K
21 Wmsup2K
27 Wmsup2K
R(l=0018WmKe=002m)=111 msup2KW
R(l=0039WmKe=005m)=128 msup2KW
R(l=0039WmKe=010m)=256 msup2KW
Not published Do not cite
Model development - Dynamic U-value
08-10-2011 wwwzebaaudk 16
000 msup2KW
030 msup2KW
060 msup2KW
090 msup2KW
120 msup2KW
150 msup2KW
000 ls pr msup2 050 ls pr msup2 100 ls pr msup2 150 ls pr msup2 200 ls pr msup2 250 ls pr msup2
Heat
resis
tan
ce
Crack flow
0010 m
0020 m
0050 m
0075 m
0100 m
Not published Do not cite
Model development - Dynamic g-value
BSim IES-VE
08-10-2011 wwwzebaaudk 17
Fs(ashs)=Fs(00)
Fs(4010)=Fs(1040)
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 18
-170
-130
-90
-50
-10
30
70
110
150 000
010
020
030
040
050
060
070
080
090
100
60
50
40
30
20
10
0
10
20
30
40
50
60
as-af
Fs
hs-gf
090-100
080-090
070-080
060-070
050-060
040-050
030-040
020-030
010-020
000-010
Not published Do not cite
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 19
DESIGN OPTIMIZATION OF A CONTEMPORARY HIGH PERFORMANCE SHADING SCREEN- INTEGRATION OF lsquoFORMrsquo AND SIMULATION TOOLS
Azadeh Omidfar Proceedings of Building Simulation 2011 12th Conference of International Building Performance Simulation Association Sydney 14-16 November
08-10-2011 wwwzebaaudk 20
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 21
Inde Ude
Glass Cavity Shading
aconvcav
esurf
aconvcav
etech
Uwin
Uwin
Rtech
Fs vs
tsol sol sol
aconvamb
etech
troom
(4) tsurf
(1) tcavity
(2) ttech
(3) ttech tamb
tsky
Experimental setup - PCM in glazing
08-10-2011 wwwzebaaudk 22
Model development - PCM in glazing
08-10-2011 wwwzebaaudk 23 Not published Do not cite
Energy balance for glazing - Potential in glazing systems
liquidliquidsolid
melt
k
radk
i
k
i
TT
Ti
aaaa
2
14tan2
1
1
1What are the optical
properties under different phases
000
020
040
060
080
100
120
297
2972
5
2975
2977
5
298
2982
5
2985
2987
5
299
2992
5
2995
2997
5
300
3002
5
3005
3007
5
301
3012
5
3015
3017
5
302
Absorbtion Abs1 Abs2 Abs3 Tsol Rfsol
08-10-2011 24 wwwzebaaudk Not published Do not cite
Energy balance for glazing - Potential in glazing systems
Room temperature 24 degC
PCM Glass
3 Layered Glass
08-10-2011 25 wwwzebaaudk Not published Do not cite
Energy balance for glazing - Potential in glazing systems
bull Use of PCM with high phase change temperature can reduce maximum cooling load ndash hellip Reduced view when
material is translucent
bull Use of PCM with low
phase change temperature can reduce heat load ndash hellip Risk of the material
not changing phase during daytime hours
08-10-2011 wwwzebaaudk 26
Intelligent Glazed Facades - Conclusion
08-10-2011 wwwzebaaudk 27
bull Focus should not only be put on
ndash U-value
ndash g-values
bull hellip but on how the faccedilade can change characteristic eg ndash High U-value to low
U-value ndash High g-value to low
g-value
Intelligent Glazed Facades - Discussion Design process
08-10-2011 wwwzebaaudk 28
Intelligent Glazed Facades - Discussion Benefits amp flaws
bull These results show that modern office buildings which fulfil energy regulations from 2008 can minimize energy demand for building services by 76 by introducing dynamic faccedilade technologies
bull But a flaw in the technologies and the used control strategies will result in no energy savings
08-10-2011 wwwzebaaudk 29
Intelligent Glazed Facades - an experimental study
Frederik V Winther
PhD Fellow
fvwcivilaaudk
Aalborg University
Department of Civil Engineering
08-10-2011 30 wwwzebaaudk
Intelligent Glazed Facades - Dynamic Facade Solutions
0 kWhmsup2
20 kWhmsup2
40 kWhmsup2
60 kWhmsup2
80 kWhmsup2
100 kWhmsup2
Basis U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 21 Lt-kontrol M
Termisk Let
hellip+dynU-val U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 21 Lt-kontrol M
Termisk Let
hellip+dynG-val U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 21 Lt-kontrol M
Termisk Let
hellip+DCVent U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 05 Lt-kontrol M
Termisk Let
hellip+LightCtrl U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 05 Lt-kontrol K
Termisk Let
hellip+E-Storage U-vaeligrdi 15
G-vaeligrdi 06 Lt-vaeligrdi 07
SEL 05 Lt-kontrol K
Termisk Tung
hellip+airtightness
Misc
Ventilation Plant
Lighting
Heating
Cooling
BR08
BR10
BR15
BR20
08-10-2011 wwwzebaaudk 10 Published Winther FV Heiselberg P Jensen RL 2010
Intelligent Glazed Facades for fulfillment of future energy regulations 3rd Nordic Passive House Conference
Intelligent Glazed Facades - General model
08-10-2011 11 wwwzebaaudk
Model development - 2 layered glazing
08-10-2011 wwwzebaaudk 12
10
15
20
25
30
35
40
10-02-11 11-02-11 12-02-11 13-02-11 14-02-11 15-02-11 16-02-11 17-02-11 18-02-11
Tem
peratu
re (
C)
Experiment BSim IES FVW final
Rsup2=085 (energi) - FVW Rsup2=096 (temperatur) - FVW
Not published Do not cite
Model development - Dynamic U-value
08-10-2011 wwwzebaaudk 13
Inde Ude
Glass Cavity Shutter
aconvcav
esurf
aconvcav
etech
Uwin
Uwin
Rtech aconvamb
etech
troom
(4) tsurf
(1) tcavity
(2) ttech
(3) ttech tamb
tsky
cavity
cavityamb
dyn
T
ttHHgP
Ld
nB
dL
zA
A
BPAAQ
10
22
3
2
51
12
2
42^
Source Air flow through cracks PH Baker S Sharples IC Ward Building and Environment SBi Anvisning 202
Model development - 2 layered glazing amp polystyrene
08-10-2011 wwwzebaaudk 14
-20
0
20
40
60
80
100
120
140
10-02-11 11-02-11 12-02-11 13-02-11 14-02-11 15-02-11 16-02-11 17-02-11 18-02-11
Tem
peratu
re (
C)
Experiment FVW initial FVW final
Rsup2=097 (energi) - FVW Rsup2=096 (temperatur) - FVW
Not published Do not cite
Model development - Dynamic U-value
08-10-2011 wwwzebaaudk 15
00 Wmsup2K
03 Wmsup2K
06 Wmsup2K
09 Wmsup2K
12 Wmsup2K
15 Wmsup2K
18 Wmsup2K
21 Wmsup2K
24 Wmsup2K
27 Wmsup2K
000 msup2KW 030 msup2KW 060 msup2KW 090 msup2KW 120 msup2KW 150 msup2KW
To
tal U
-valu
e
Heat resistance
08 Wmsup2K
15 Wmsup2K
21 Wmsup2K
27 Wmsup2K
R(l=0018WmKe=002m)=111 msup2KW
R(l=0039WmKe=005m)=128 msup2KW
R(l=0039WmKe=010m)=256 msup2KW
Not published Do not cite
Model development - Dynamic U-value
08-10-2011 wwwzebaaudk 16
000 msup2KW
030 msup2KW
060 msup2KW
090 msup2KW
120 msup2KW
150 msup2KW
000 ls pr msup2 050 ls pr msup2 100 ls pr msup2 150 ls pr msup2 200 ls pr msup2 250 ls pr msup2
Heat
resis
tan
ce
Crack flow
0010 m
0020 m
0050 m
0075 m
0100 m
Not published Do not cite
Model development - Dynamic g-value
BSim IES-VE
08-10-2011 wwwzebaaudk 17
Fs(ashs)=Fs(00)
Fs(4010)=Fs(1040)
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 18
-170
-130
-90
-50
-10
30
70
110
150 000
010
020
030
040
050
060
070
080
090
100
60
50
40
30
20
10
0
10
20
30
40
50
60
as-af
Fs
hs-gf
090-100
080-090
070-080
060-070
050-060
040-050
030-040
020-030
010-020
000-010
Not published Do not cite
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 19
DESIGN OPTIMIZATION OF A CONTEMPORARY HIGH PERFORMANCE SHADING SCREEN- INTEGRATION OF lsquoFORMrsquo AND SIMULATION TOOLS
Azadeh Omidfar Proceedings of Building Simulation 2011 12th Conference of International Building Performance Simulation Association Sydney 14-16 November
08-10-2011 wwwzebaaudk 20
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 21
Inde Ude
Glass Cavity Shading
aconvcav
esurf
aconvcav
etech
Uwin
Uwin
Rtech
Fs vs
tsol sol sol
aconvamb
etech
troom
(4) tsurf
(1) tcavity
(2) ttech
(3) ttech tamb
tsky
Experimental setup - PCM in glazing
08-10-2011 wwwzebaaudk 22
Model development - PCM in glazing
08-10-2011 wwwzebaaudk 23 Not published Do not cite
Energy balance for glazing - Potential in glazing systems
liquidliquidsolid
melt
k
radk
i
k
i
TT
Ti
aaaa
2
14tan2
1
1
1What are the optical
properties under different phases
000
020
040
060
080
100
120
297
2972
5
2975
2977
5
298
2982
5
2985
2987
5
299
2992
5
2995
2997
5
300
3002
5
3005
3007
5
301
3012
5
3015
3017
5
302
Absorbtion Abs1 Abs2 Abs3 Tsol Rfsol
08-10-2011 24 wwwzebaaudk Not published Do not cite
Energy balance for glazing - Potential in glazing systems
Room temperature 24 degC
PCM Glass
3 Layered Glass
08-10-2011 25 wwwzebaaudk Not published Do not cite
Energy balance for glazing - Potential in glazing systems
bull Use of PCM with high phase change temperature can reduce maximum cooling load ndash hellip Reduced view when
material is translucent
bull Use of PCM with low
phase change temperature can reduce heat load ndash hellip Risk of the material
not changing phase during daytime hours
08-10-2011 wwwzebaaudk 26
Intelligent Glazed Facades - Conclusion
08-10-2011 wwwzebaaudk 27
bull Focus should not only be put on
ndash U-value
ndash g-values
bull hellip but on how the faccedilade can change characteristic eg ndash High U-value to low
U-value ndash High g-value to low
g-value
Intelligent Glazed Facades - Discussion Design process
08-10-2011 wwwzebaaudk 28
Intelligent Glazed Facades - Discussion Benefits amp flaws
bull These results show that modern office buildings which fulfil energy regulations from 2008 can minimize energy demand for building services by 76 by introducing dynamic faccedilade technologies
bull But a flaw in the technologies and the used control strategies will result in no energy savings
08-10-2011 wwwzebaaudk 29
Intelligent Glazed Facades - an experimental study
Frederik V Winther
PhD Fellow
fvwcivilaaudk
Aalborg University
Department of Civil Engineering
08-10-2011 30 wwwzebaaudk
Intelligent Glazed Facades - General model
08-10-2011 11 wwwzebaaudk
Model development - 2 layered glazing
08-10-2011 wwwzebaaudk 12
10
15
20
25
30
35
40
10-02-11 11-02-11 12-02-11 13-02-11 14-02-11 15-02-11 16-02-11 17-02-11 18-02-11
Tem
peratu
re (
C)
Experiment BSim IES FVW final
Rsup2=085 (energi) - FVW Rsup2=096 (temperatur) - FVW
Not published Do not cite
Model development - Dynamic U-value
08-10-2011 wwwzebaaudk 13
Inde Ude
Glass Cavity Shutter
aconvcav
esurf
aconvcav
etech
Uwin
Uwin
Rtech aconvamb
etech
troom
(4) tsurf
(1) tcavity
(2) ttech
(3) ttech tamb
tsky
cavity
cavityamb
dyn
T
ttHHgP
Ld
nB
dL
zA
A
BPAAQ
10
22
3
2
51
12
2
42^
Source Air flow through cracks PH Baker S Sharples IC Ward Building and Environment SBi Anvisning 202
Model development - 2 layered glazing amp polystyrene
08-10-2011 wwwzebaaudk 14
-20
0
20
40
60
80
100
120
140
10-02-11 11-02-11 12-02-11 13-02-11 14-02-11 15-02-11 16-02-11 17-02-11 18-02-11
Tem
peratu
re (
C)
Experiment FVW initial FVW final
Rsup2=097 (energi) - FVW Rsup2=096 (temperatur) - FVW
Not published Do not cite
Model development - Dynamic U-value
08-10-2011 wwwzebaaudk 15
00 Wmsup2K
03 Wmsup2K
06 Wmsup2K
09 Wmsup2K
12 Wmsup2K
15 Wmsup2K
18 Wmsup2K
21 Wmsup2K
24 Wmsup2K
27 Wmsup2K
000 msup2KW 030 msup2KW 060 msup2KW 090 msup2KW 120 msup2KW 150 msup2KW
To
tal U
-valu
e
Heat resistance
08 Wmsup2K
15 Wmsup2K
21 Wmsup2K
27 Wmsup2K
R(l=0018WmKe=002m)=111 msup2KW
R(l=0039WmKe=005m)=128 msup2KW
R(l=0039WmKe=010m)=256 msup2KW
Not published Do not cite
Model development - Dynamic U-value
08-10-2011 wwwzebaaudk 16
000 msup2KW
030 msup2KW
060 msup2KW
090 msup2KW
120 msup2KW
150 msup2KW
000 ls pr msup2 050 ls pr msup2 100 ls pr msup2 150 ls pr msup2 200 ls pr msup2 250 ls pr msup2
Heat
resis
tan
ce
Crack flow
0010 m
0020 m
0050 m
0075 m
0100 m
Not published Do not cite
Model development - Dynamic g-value
BSim IES-VE
08-10-2011 wwwzebaaudk 17
Fs(ashs)=Fs(00)
Fs(4010)=Fs(1040)
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 18
-170
-130
-90
-50
-10
30
70
110
150 000
010
020
030
040
050
060
070
080
090
100
60
50
40
30
20
10
0
10
20
30
40
50
60
as-af
Fs
hs-gf
090-100
080-090
070-080
060-070
050-060
040-050
030-040
020-030
010-020
000-010
Not published Do not cite
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 19
DESIGN OPTIMIZATION OF A CONTEMPORARY HIGH PERFORMANCE SHADING SCREEN- INTEGRATION OF lsquoFORMrsquo AND SIMULATION TOOLS
Azadeh Omidfar Proceedings of Building Simulation 2011 12th Conference of International Building Performance Simulation Association Sydney 14-16 November
08-10-2011 wwwzebaaudk 20
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 21
Inde Ude
Glass Cavity Shading
aconvcav
esurf
aconvcav
etech
Uwin
Uwin
Rtech
Fs vs
tsol sol sol
aconvamb
etech
troom
(4) tsurf
(1) tcavity
(2) ttech
(3) ttech tamb
tsky
Experimental setup - PCM in glazing
08-10-2011 wwwzebaaudk 22
Model development - PCM in glazing
08-10-2011 wwwzebaaudk 23 Not published Do not cite
Energy balance for glazing - Potential in glazing systems
liquidliquidsolid
melt
k
radk
i
k
i
TT
Ti
aaaa
2
14tan2
1
1
1What are the optical
properties under different phases
000
020
040
060
080
100
120
297
2972
5
2975
2977
5
298
2982
5
2985
2987
5
299
2992
5
2995
2997
5
300
3002
5
3005
3007
5
301
3012
5
3015
3017
5
302
Absorbtion Abs1 Abs2 Abs3 Tsol Rfsol
08-10-2011 24 wwwzebaaudk Not published Do not cite
Energy balance for glazing - Potential in glazing systems
Room temperature 24 degC
PCM Glass
3 Layered Glass
08-10-2011 25 wwwzebaaudk Not published Do not cite
Energy balance for glazing - Potential in glazing systems
bull Use of PCM with high phase change temperature can reduce maximum cooling load ndash hellip Reduced view when
material is translucent
bull Use of PCM with low
phase change temperature can reduce heat load ndash hellip Risk of the material
not changing phase during daytime hours
08-10-2011 wwwzebaaudk 26
Intelligent Glazed Facades - Conclusion
08-10-2011 wwwzebaaudk 27
bull Focus should not only be put on
ndash U-value
ndash g-values
bull hellip but on how the faccedilade can change characteristic eg ndash High U-value to low
U-value ndash High g-value to low
g-value
Intelligent Glazed Facades - Discussion Design process
08-10-2011 wwwzebaaudk 28
Intelligent Glazed Facades - Discussion Benefits amp flaws
bull These results show that modern office buildings which fulfil energy regulations from 2008 can minimize energy demand for building services by 76 by introducing dynamic faccedilade technologies
bull But a flaw in the technologies and the used control strategies will result in no energy savings
08-10-2011 wwwzebaaudk 29
Intelligent Glazed Facades - an experimental study
Frederik V Winther
PhD Fellow
fvwcivilaaudk
Aalborg University
Department of Civil Engineering
08-10-2011 30 wwwzebaaudk
Model development - 2 layered glazing
08-10-2011 wwwzebaaudk 12
10
15
20
25
30
35
40
10-02-11 11-02-11 12-02-11 13-02-11 14-02-11 15-02-11 16-02-11 17-02-11 18-02-11
Tem
peratu
re (
C)
Experiment BSim IES FVW final
Rsup2=085 (energi) - FVW Rsup2=096 (temperatur) - FVW
Not published Do not cite
Model development - Dynamic U-value
08-10-2011 wwwzebaaudk 13
Inde Ude
Glass Cavity Shutter
aconvcav
esurf
aconvcav
etech
Uwin
Uwin
Rtech aconvamb
etech
troom
(4) tsurf
(1) tcavity
(2) ttech
(3) ttech tamb
tsky
cavity
cavityamb
dyn
T
ttHHgP
Ld
nB
dL
zA
A
BPAAQ
10
22
3
2
51
12
2
42^
Source Air flow through cracks PH Baker S Sharples IC Ward Building and Environment SBi Anvisning 202
Model development - 2 layered glazing amp polystyrene
08-10-2011 wwwzebaaudk 14
-20
0
20
40
60
80
100
120
140
10-02-11 11-02-11 12-02-11 13-02-11 14-02-11 15-02-11 16-02-11 17-02-11 18-02-11
Tem
peratu
re (
C)
Experiment FVW initial FVW final
Rsup2=097 (energi) - FVW Rsup2=096 (temperatur) - FVW
Not published Do not cite
Model development - Dynamic U-value
08-10-2011 wwwzebaaudk 15
00 Wmsup2K
03 Wmsup2K
06 Wmsup2K
09 Wmsup2K
12 Wmsup2K
15 Wmsup2K
18 Wmsup2K
21 Wmsup2K
24 Wmsup2K
27 Wmsup2K
000 msup2KW 030 msup2KW 060 msup2KW 090 msup2KW 120 msup2KW 150 msup2KW
To
tal U
-valu
e
Heat resistance
08 Wmsup2K
15 Wmsup2K
21 Wmsup2K
27 Wmsup2K
R(l=0018WmKe=002m)=111 msup2KW
R(l=0039WmKe=005m)=128 msup2KW
R(l=0039WmKe=010m)=256 msup2KW
Not published Do not cite
Model development - Dynamic U-value
08-10-2011 wwwzebaaudk 16
000 msup2KW
030 msup2KW
060 msup2KW
090 msup2KW
120 msup2KW
150 msup2KW
000 ls pr msup2 050 ls pr msup2 100 ls pr msup2 150 ls pr msup2 200 ls pr msup2 250 ls pr msup2
Heat
resis
tan
ce
Crack flow
0010 m
0020 m
0050 m
0075 m
0100 m
Not published Do not cite
Model development - Dynamic g-value
BSim IES-VE
08-10-2011 wwwzebaaudk 17
Fs(ashs)=Fs(00)
Fs(4010)=Fs(1040)
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 18
-170
-130
-90
-50
-10
30
70
110
150 000
010
020
030
040
050
060
070
080
090
100
60
50
40
30
20
10
0
10
20
30
40
50
60
as-af
Fs
hs-gf
090-100
080-090
070-080
060-070
050-060
040-050
030-040
020-030
010-020
000-010
Not published Do not cite
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 19
DESIGN OPTIMIZATION OF A CONTEMPORARY HIGH PERFORMANCE SHADING SCREEN- INTEGRATION OF lsquoFORMrsquo AND SIMULATION TOOLS
Azadeh Omidfar Proceedings of Building Simulation 2011 12th Conference of International Building Performance Simulation Association Sydney 14-16 November
08-10-2011 wwwzebaaudk 20
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 21
Inde Ude
Glass Cavity Shading
aconvcav
esurf
aconvcav
etech
Uwin
Uwin
Rtech
Fs vs
tsol sol sol
aconvamb
etech
troom
(4) tsurf
(1) tcavity
(2) ttech
(3) ttech tamb
tsky
Experimental setup - PCM in glazing
08-10-2011 wwwzebaaudk 22
Model development - PCM in glazing
08-10-2011 wwwzebaaudk 23 Not published Do not cite
Energy balance for glazing - Potential in glazing systems
liquidliquidsolid
melt
k
radk
i
k
i
TT
Ti
aaaa
2
14tan2
1
1
1What are the optical
properties under different phases
000
020
040
060
080
100
120
297
2972
5
2975
2977
5
298
2982
5
2985
2987
5
299
2992
5
2995
2997
5
300
3002
5
3005
3007
5
301
3012
5
3015
3017
5
302
Absorbtion Abs1 Abs2 Abs3 Tsol Rfsol
08-10-2011 24 wwwzebaaudk Not published Do not cite
Energy balance for glazing - Potential in glazing systems
Room temperature 24 degC
PCM Glass
3 Layered Glass
08-10-2011 25 wwwzebaaudk Not published Do not cite
Energy balance for glazing - Potential in glazing systems
bull Use of PCM with high phase change temperature can reduce maximum cooling load ndash hellip Reduced view when
material is translucent
bull Use of PCM with low
phase change temperature can reduce heat load ndash hellip Risk of the material
not changing phase during daytime hours
08-10-2011 wwwzebaaudk 26
Intelligent Glazed Facades - Conclusion
08-10-2011 wwwzebaaudk 27
bull Focus should not only be put on
ndash U-value
ndash g-values
bull hellip but on how the faccedilade can change characteristic eg ndash High U-value to low
U-value ndash High g-value to low
g-value
Intelligent Glazed Facades - Discussion Design process
08-10-2011 wwwzebaaudk 28
Intelligent Glazed Facades - Discussion Benefits amp flaws
bull These results show that modern office buildings which fulfil energy regulations from 2008 can minimize energy demand for building services by 76 by introducing dynamic faccedilade technologies
bull But a flaw in the technologies and the used control strategies will result in no energy savings
08-10-2011 wwwzebaaudk 29
Intelligent Glazed Facades - an experimental study
Frederik V Winther
PhD Fellow
fvwcivilaaudk
Aalborg University
Department of Civil Engineering
08-10-2011 30 wwwzebaaudk
Model development - Dynamic U-value
08-10-2011 wwwzebaaudk 13
Inde Ude
Glass Cavity Shutter
aconvcav
esurf
aconvcav
etech
Uwin
Uwin
Rtech aconvamb
etech
troom
(4) tsurf
(1) tcavity
(2) ttech
(3) ttech tamb
tsky
cavity
cavityamb
dyn
T
ttHHgP
Ld
nB
dL
zA
A
BPAAQ
10
22
3
2
51
12
2
42^
Source Air flow through cracks PH Baker S Sharples IC Ward Building and Environment SBi Anvisning 202
Model development - 2 layered glazing amp polystyrene
08-10-2011 wwwzebaaudk 14
-20
0
20
40
60
80
100
120
140
10-02-11 11-02-11 12-02-11 13-02-11 14-02-11 15-02-11 16-02-11 17-02-11 18-02-11
Tem
peratu
re (
C)
Experiment FVW initial FVW final
Rsup2=097 (energi) - FVW Rsup2=096 (temperatur) - FVW
Not published Do not cite
Model development - Dynamic U-value
08-10-2011 wwwzebaaudk 15
00 Wmsup2K
03 Wmsup2K
06 Wmsup2K
09 Wmsup2K
12 Wmsup2K
15 Wmsup2K
18 Wmsup2K
21 Wmsup2K
24 Wmsup2K
27 Wmsup2K
000 msup2KW 030 msup2KW 060 msup2KW 090 msup2KW 120 msup2KW 150 msup2KW
To
tal U
-valu
e
Heat resistance
08 Wmsup2K
15 Wmsup2K
21 Wmsup2K
27 Wmsup2K
R(l=0018WmKe=002m)=111 msup2KW
R(l=0039WmKe=005m)=128 msup2KW
R(l=0039WmKe=010m)=256 msup2KW
Not published Do not cite
Model development - Dynamic U-value
08-10-2011 wwwzebaaudk 16
000 msup2KW
030 msup2KW
060 msup2KW
090 msup2KW
120 msup2KW
150 msup2KW
000 ls pr msup2 050 ls pr msup2 100 ls pr msup2 150 ls pr msup2 200 ls pr msup2 250 ls pr msup2
Heat
resis
tan
ce
Crack flow
0010 m
0020 m
0050 m
0075 m
0100 m
Not published Do not cite
Model development - Dynamic g-value
BSim IES-VE
08-10-2011 wwwzebaaudk 17
Fs(ashs)=Fs(00)
Fs(4010)=Fs(1040)
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 18
-170
-130
-90
-50
-10
30
70
110
150 000
010
020
030
040
050
060
070
080
090
100
60
50
40
30
20
10
0
10
20
30
40
50
60
as-af
Fs
hs-gf
090-100
080-090
070-080
060-070
050-060
040-050
030-040
020-030
010-020
000-010
Not published Do not cite
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 19
DESIGN OPTIMIZATION OF A CONTEMPORARY HIGH PERFORMANCE SHADING SCREEN- INTEGRATION OF lsquoFORMrsquo AND SIMULATION TOOLS
Azadeh Omidfar Proceedings of Building Simulation 2011 12th Conference of International Building Performance Simulation Association Sydney 14-16 November
08-10-2011 wwwzebaaudk 20
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 21
Inde Ude
Glass Cavity Shading
aconvcav
esurf
aconvcav
etech
Uwin
Uwin
Rtech
Fs vs
tsol sol sol
aconvamb
etech
troom
(4) tsurf
(1) tcavity
(2) ttech
(3) ttech tamb
tsky
Experimental setup - PCM in glazing
08-10-2011 wwwzebaaudk 22
Model development - PCM in glazing
08-10-2011 wwwzebaaudk 23 Not published Do not cite
Energy balance for glazing - Potential in glazing systems
liquidliquidsolid
melt
k
radk
i
k
i
TT
Ti
aaaa
2
14tan2
1
1
1What are the optical
properties under different phases
000
020
040
060
080
100
120
297
2972
5
2975
2977
5
298
2982
5
2985
2987
5
299
2992
5
2995
2997
5
300
3002
5
3005
3007
5
301
3012
5
3015
3017
5
302
Absorbtion Abs1 Abs2 Abs3 Tsol Rfsol
08-10-2011 24 wwwzebaaudk Not published Do not cite
Energy balance for glazing - Potential in glazing systems
Room temperature 24 degC
PCM Glass
3 Layered Glass
08-10-2011 25 wwwzebaaudk Not published Do not cite
Energy balance for glazing - Potential in glazing systems
bull Use of PCM with high phase change temperature can reduce maximum cooling load ndash hellip Reduced view when
material is translucent
bull Use of PCM with low
phase change temperature can reduce heat load ndash hellip Risk of the material
not changing phase during daytime hours
08-10-2011 wwwzebaaudk 26
Intelligent Glazed Facades - Conclusion
08-10-2011 wwwzebaaudk 27
bull Focus should not only be put on
ndash U-value
ndash g-values
bull hellip but on how the faccedilade can change characteristic eg ndash High U-value to low
U-value ndash High g-value to low
g-value
Intelligent Glazed Facades - Discussion Design process
08-10-2011 wwwzebaaudk 28
Intelligent Glazed Facades - Discussion Benefits amp flaws
bull These results show that modern office buildings which fulfil energy regulations from 2008 can minimize energy demand for building services by 76 by introducing dynamic faccedilade technologies
bull But a flaw in the technologies and the used control strategies will result in no energy savings
08-10-2011 wwwzebaaudk 29
Intelligent Glazed Facades - an experimental study
Frederik V Winther
PhD Fellow
fvwcivilaaudk
Aalborg University
Department of Civil Engineering
08-10-2011 30 wwwzebaaudk
Model development - 2 layered glazing amp polystyrene
08-10-2011 wwwzebaaudk 14
-20
0
20
40
60
80
100
120
140
10-02-11 11-02-11 12-02-11 13-02-11 14-02-11 15-02-11 16-02-11 17-02-11 18-02-11
Tem
peratu
re (
C)
Experiment FVW initial FVW final
Rsup2=097 (energi) - FVW Rsup2=096 (temperatur) - FVW
Not published Do not cite
Model development - Dynamic U-value
08-10-2011 wwwzebaaudk 15
00 Wmsup2K
03 Wmsup2K
06 Wmsup2K
09 Wmsup2K
12 Wmsup2K
15 Wmsup2K
18 Wmsup2K
21 Wmsup2K
24 Wmsup2K
27 Wmsup2K
000 msup2KW 030 msup2KW 060 msup2KW 090 msup2KW 120 msup2KW 150 msup2KW
To
tal U
-valu
e
Heat resistance
08 Wmsup2K
15 Wmsup2K
21 Wmsup2K
27 Wmsup2K
R(l=0018WmKe=002m)=111 msup2KW
R(l=0039WmKe=005m)=128 msup2KW
R(l=0039WmKe=010m)=256 msup2KW
Not published Do not cite
Model development - Dynamic U-value
08-10-2011 wwwzebaaudk 16
000 msup2KW
030 msup2KW
060 msup2KW
090 msup2KW
120 msup2KW
150 msup2KW
000 ls pr msup2 050 ls pr msup2 100 ls pr msup2 150 ls pr msup2 200 ls pr msup2 250 ls pr msup2
Heat
resis
tan
ce
Crack flow
0010 m
0020 m
0050 m
0075 m
0100 m
Not published Do not cite
Model development - Dynamic g-value
BSim IES-VE
08-10-2011 wwwzebaaudk 17
Fs(ashs)=Fs(00)
Fs(4010)=Fs(1040)
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 18
-170
-130
-90
-50
-10
30
70
110
150 000
010
020
030
040
050
060
070
080
090
100
60
50
40
30
20
10
0
10
20
30
40
50
60
as-af
Fs
hs-gf
090-100
080-090
070-080
060-070
050-060
040-050
030-040
020-030
010-020
000-010
Not published Do not cite
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 19
DESIGN OPTIMIZATION OF A CONTEMPORARY HIGH PERFORMANCE SHADING SCREEN- INTEGRATION OF lsquoFORMrsquo AND SIMULATION TOOLS
Azadeh Omidfar Proceedings of Building Simulation 2011 12th Conference of International Building Performance Simulation Association Sydney 14-16 November
08-10-2011 wwwzebaaudk 20
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 21
Inde Ude
Glass Cavity Shading
aconvcav
esurf
aconvcav
etech
Uwin
Uwin
Rtech
Fs vs
tsol sol sol
aconvamb
etech
troom
(4) tsurf
(1) tcavity
(2) ttech
(3) ttech tamb
tsky
Experimental setup - PCM in glazing
08-10-2011 wwwzebaaudk 22
Model development - PCM in glazing
08-10-2011 wwwzebaaudk 23 Not published Do not cite
Energy balance for glazing - Potential in glazing systems
liquidliquidsolid
melt
k
radk
i
k
i
TT
Ti
aaaa
2
14tan2
1
1
1What are the optical
properties under different phases
000
020
040
060
080
100
120
297
2972
5
2975
2977
5
298
2982
5
2985
2987
5
299
2992
5
2995
2997
5
300
3002
5
3005
3007
5
301
3012
5
3015
3017
5
302
Absorbtion Abs1 Abs2 Abs3 Tsol Rfsol
08-10-2011 24 wwwzebaaudk Not published Do not cite
Energy balance for glazing - Potential in glazing systems
Room temperature 24 degC
PCM Glass
3 Layered Glass
08-10-2011 25 wwwzebaaudk Not published Do not cite
Energy balance for glazing - Potential in glazing systems
bull Use of PCM with high phase change temperature can reduce maximum cooling load ndash hellip Reduced view when
material is translucent
bull Use of PCM with low
phase change temperature can reduce heat load ndash hellip Risk of the material
not changing phase during daytime hours
08-10-2011 wwwzebaaudk 26
Intelligent Glazed Facades - Conclusion
08-10-2011 wwwzebaaudk 27
bull Focus should not only be put on
ndash U-value
ndash g-values
bull hellip but on how the faccedilade can change characteristic eg ndash High U-value to low
U-value ndash High g-value to low
g-value
Intelligent Glazed Facades - Discussion Design process
08-10-2011 wwwzebaaudk 28
Intelligent Glazed Facades - Discussion Benefits amp flaws
bull These results show that modern office buildings which fulfil energy regulations from 2008 can minimize energy demand for building services by 76 by introducing dynamic faccedilade technologies
bull But a flaw in the technologies and the used control strategies will result in no energy savings
08-10-2011 wwwzebaaudk 29
Intelligent Glazed Facades - an experimental study
Frederik V Winther
PhD Fellow
fvwcivilaaudk
Aalborg University
Department of Civil Engineering
08-10-2011 30 wwwzebaaudk
Model development - Dynamic U-value
08-10-2011 wwwzebaaudk 15
00 Wmsup2K
03 Wmsup2K
06 Wmsup2K
09 Wmsup2K
12 Wmsup2K
15 Wmsup2K
18 Wmsup2K
21 Wmsup2K
24 Wmsup2K
27 Wmsup2K
000 msup2KW 030 msup2KW 060 msup2KW 090 msup2KW 120 msup2KW 150 msup2KW
To
tal U
-valu
e
Heat resistance
08 Wmsup2K
15 Wmsup2K
21 Wmsup2K
27 Wmsup2K
R(l=0018WmKe=002m)=111 msup2KW
R(l=0039WmKe=005m)=128 msup2KW
R(l=0039WmKe=010m)=256 msup2KW
Not published Do not cite
Model development - Dynamic U-value
08-10-2011 wwwzebaaudk 16
000 msup2KW
030 msup2KW
060 msup2KW
090 msup2KW
120 msup2KW
150 msup2KW
000 ls pr msup2 050 ls pr msup2 100 ls pr msup2 150 ls pr msup2 200 ls pr msup2 250 ls pr msup2
Heat
resis
tan
ce
Crack flow
0010 m
0020 m
0050 m
0075 m
0100 m
Not published Do not cite
Model development - Dynamic g-value
BSim IES-VE
08-10-2011 wwwzebaaudk 17
Fs(ashs)=Fs(00)
Fs(4010)=Fs(1040)
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 18
-170
-130
-90
-50
-10
30
70
110
150 000
010
020
030
040
050
060
070
080
090
100
60
50
40
30
20
10
0
10
20
30
40
50
60
as-af
Fs
hs-gf
090-100
080-090
070-080
060-070
050-060
040-050
030-040
020-030
010-020
000-010
Not published Do not cite
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 19
DESIGN OPTIMIZATION OF A CONTEMPORARY HIGH PERFORMANCE SHADING SCREEN- INTEGRATION OF lsquoFORMrsquo AND SIMULATION TOOLS
Azadeh Omidfar Proceedings of Building Simulation 2011 12th Conference of International Building Performance Simulation Association Sydney 14-16 November
08-10-2011 wwwzebaaudk 20
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 21
Inde Ude
Glass Cavity Shading
aconvcav
esurf
aconvcav
etech
Uwin
Uwin
Rtech
Fs vs
tsol sol sol
aconvamb
etech
troom
(4) tsurf
(1) tcavity
(2) ttech
(3) ttech tamb
tsky
Experimental setup - PCM in glazing
08-10-2011 wwwzebaaudk 22
Model development - PCM in glazing
08-10-2011 wwwzebaaudk 23 Not published Do not cite
Energy balance for glazing - Potential in glazing systems
liquidliquidsolid
melt
k
radk
i
k
i
TT
Ti
aaaa
2
14tan2
1
1
1What are the optical
properties under different phases
000
020
040
060
080
100
120
297
2972
5
2975
2977
5
298
2982
5
2985
2987
5
299
2992
5
2995
2997
5
300
3002
5
3005
3007
5
301
3012
5
3015
3017
5
302
Absorbtion Abs1 Abs2 Abs3 Tsol Rfsol
08-10-2011 24 wwwzebaaudk Not published Do not cite
Energy balance for glazing - Potential in glazing systems
Room temperature 24 degC
PCM Glass
3 Layered Glass
08-10-2011 25 wwwzebaaudk Not published Do not cite
Energy balance for glazing - Potential in glazing systems
bull Use of PCM with high phase change temperature can reduce maximum cooling load ndash hellip Reduced view when
material is translucent
bull Use of PCM with low
phase change temperature can reduce heat load ndash hellip Risk of the material
not changing phase during daytime hours
08-10-2011 wwwzebaaudk 26
Intelligent Glazed Facades - Conclusion
08-10-2011 wwwzebaaudk 27
bull Focus should not only be put on
ndash U-value
ndash g-values
bull hellip but on how the faccedilade can change characteristic eg ndash High U-value to low
U-value ndash High g-value to low
g-value
Intelligent Glazed Facades - Discussion Design process
08-10-2011 wwwzebaaudk 28
Intelligent Glazed Facades - Discussion Benefits amp flaws
bull These results show that modern office buildings which fulfil energy regulations from 2008 can minimize energy demand for building services by 76 by introducing dynamic faccedilade technologies
bull But a flaw in the technologies and the used control strategies will result in no energy savings
08-10-2011 wwwzebaaudk 29
Intelligent Glazed Facades - an experimental study
Frederik V Winther
PhD Fellow
fvwcivilaaudk
Aalborg University
Department of Civil Engineering
08-10-2011 30 wwwzebaaudk
Model development - Dynamic U-value
08-10-2011 wwwzebaaudk 16
000 msup2KW
030 msup2KW
060 msup2KW
090 msup2KW
120 msup2KW
150 msup2KW
000 ls pr msup2 050 ls pr msup2 100 ls pr msup2 150 ls pr msup2 200 ls pr msup2 250 ls pr msup2
Heat
resis
tan
ce
Crack flow
0010 m
0020 m
0050 m
0075 m
0100 m
Not published Do not cite
Model development - Dynamic g-value
BSim IES-VE
08-10-2011 wwwzebaaudk 17
Fs(ashs)=Fs(00)
Fs(4010)=Fs(1040)
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 18
-170
-130
-90
-50
-10
30
70
110
150 000
010
020
030
040
050
060
070
080
090
100
60
50
40
30
20
10
0
10
20
30
40
50
60
as-af
Fs
hs-gf
090-100
080-090
070-080
060-070
050-060
040-050
030-040
020-030
010-020
000-010
Not published Do not cite
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 19
DESIGN OPTIMIZATION OF A CONTEMPORARY HIGH PERFORMANCE SHADING SCREEN- INTEGRATION OF lsquoFORMrsquo AND SIMULATION TOOLS
Azadeh Omidfar Proceedings of Building Simulation 2011 12th Conference of International Building Performance Simulation Association Sydney 14-16 November
08-10-2011 wwwzebaaudk 20
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 21
Inde Ude
Glass Cavity Shading
aconvcav
esurf
aconvcav
etech
Uwin
Uwin
Rtech
Fs vs
tsol sol sol
aconvamb
etech
troom
(4) tsurf
(1) tcavity
(2) ttech
(3) ttech tamb
tsky
Experimental setup - PCM in glazing
08-10-2011 wwwzebaaudk 22
Model development - PCM in glazing
08-10-2011 wwwzebaaudk 23 Not published Do not cite
Energy balance for glazing - Potential in glazing systems
liquidliquidsolid
melt
k
radk
i
k
i
TT
Ti
aaaa
2
14tan2
1
1
1What are the optical
properties under different phases
000
020
040
060
080
100
120
297
2972
5
2975
2977
5
298
2982
5
2985
2987
5
299
2992
5
2995
2997
5
300
3002
5
3005
3007
5
301
3012
5
3015
3017
5
302
Absorbtion Abs1 Abs2 Abs3 Tsol Rfsol
08-10-2011 24 wwwzebaaudk Not published Do not cite
Energy balance for glazing - Potential in glazing systems
Room temperature 24 degC
PCM Glass
3 Layered Glass
08-10-2011 25 wwwzebaaudk Not published Do not cite
Energy balance for glazing - Potential in glazing systems
bull Use of PCM with high phase change temperature can reduce maximum cooling load ndash hellip Reduced view when
material is translucent
bull Use of PCM with low
phase change temperature can reduce heat load ndash hellip Risk of the material
not changing phase during daytime hours
08-10-2011 wwwzebaaudk 26
Intelligent Glazed Facades - Conclusion
08-10-2011 wwwzebaaudk 27
bull Focus should not only be put on
ndash U-value
ndash g-values
bull hellip but on how the faccedilade can change characteristic eg ndash High U-value to low
U-value ndash High g-value to low
g-value
Intelligent Glazed Facades - Discussion Design process
08-10-2011 wwwzebaaudk 28
Intelligent Glazed Facades - Discussion Benefits amp flaws
bull These results show that modern office buildings which fulfil energy regulations from 2008 can minimize energy demand for building services by 76 by introducing dynamic faccedilade technologies
bull But a flaw in the technologies and the used control strategies will result in no energy savings
08-10-2011 wwwzebaaudk 29
Intelligent Glazed Facades - an experimental study
Frederik V Winther
PhD Fellow
fvwcivilaaudk
Aalborg University
Department of Civil Engineering
08-10-2011 30 wwwzebaaudk
Model development - Dynamic g-value
BSim IES-VE
08-10-2011 wwwzebaaudk 17
Fs(ashs)=Fs(00)
Fs(4010)=Fs(1040)
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 18
-170
-130
-90
-50
-10
30
70
110
150 000
010
020
030
040
050
060
070
080
090
100
60
50
40
30
20
10
0
10
20
30
40
50
60
as-af
Fs
hs-gf
090-100
080-090
070-080
060-070
050-060
040-050
030-040
020-030
010-020
000-010
Not published Do not cite
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 19
DESIGN OPTIMIZATION OF A CONTEMPORARY HIGH PERFORMANCE SHADING SCREEN- INTEGRATION OF lsquoFORMrsquo AND SIMULATION TOOLS
Azadeh Omidfar Proceedings of Building Simulation 2011 12th Conference of International Building Performance Simulation Association Sydney 14-16 November
08-10-2011 wwwzebaaudk 20
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 21
Inde Ude
Glass Cavity Shading
aconvcav
esurf
aconvcav
etech
Uwin
Uwin
Rtech
Fs vs
tsol sol sol
aconvamb
etech
troom
(4) tsurf
(1) tcavity
(2) ttech
(3) ttech tamb
tsky
Experimental setup - PCM in glazing
08-10-2011 wwwzebaaudk 22
Model development - PCM in glazing
08-10-2011 wwwzebaaudk 23 Not published Do not cite
Energy balance for glazing - Potential in glazing systems
liquidliquidsolid
melt
k
radk
i
k
i
TT
Ti
aaaa
2
14tan2
1
1
1What are the optical
properties under different phases
000
020
040
060
080
100
120
297
2972
5
2975
2977
5
298
2982
5
2985
2987
5
299
2992
5
2995
2997
5
300
3002
5
3005
3007
5
301
3012
5
3015
3017
5
302
Absorbtion Abs1 Abs2 Abs3 Tsol Rfsol
08-10-2011 24 wwwzebaaudk Not published Do not cite
Energy balance for glazing - Potential in glazing systems
Room temperature 24 degC
PCM Glass
3 Layered Glass
08-10-2011 25 wwwzebaaudk Not published Do not cite
Energy balance for glazing - Potential in glazing systems
bull Use of PCM with high phase change temperature can reduce maximum cooling load ndash hellip Reduced view when
material is translucent
bull Use of PCM with low
phase change temperature can reduce heat load ndash hellip Risk of the material
not changing phase during daytime hours
08-10-2011 wwwzebaaudk 26
Intelligent Glazed Facades - Conclusion
08-10-2011 wwwzebaaudk 27
bull Focus should not only be put on
ndash U-value
ndash g-values
bull hellip but on how the faccedilade can change characteristic eg ndash High U-value to low
U-value ndash High g-value to low
g-value
Intelligent Glazed Facades - Discussion Design process
08-10-2011 wwwzebaaudk 28
Intelligent Glazed Facades - Discussion Benefits amp flaws
bull These results show that modern office buildings which fulfil energy regulations from 2008 can minimize energy demand for building services by 76 by introducing dynamic faccedilade technologies
bull But a flaw in the technologies and the used control strategies will result in no energy savings
08-10-2011 wwwzebaaudk 29
Intelligent Glazed Facades - an experimental study
Frederik V Winther
PhD Fellow
fvwcivilaaudk
Aalborg University
Department of Civil Engineering
08-10-2011 30 wwwzebaaudk
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 18
-170
-130
-90
-50
-10
30
70
110
150 000
010
020
030
040
050
060
070
080
090
100
60
50
40
30
20
10
0
10
20
30
40
50
60
as-af
Fs
hs-gf
090-100
080-090
070-080
060-070
050-060
040-050
030-040
020-030
010-020
000-010
Not published Do not cite
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 19
DESIGN OPTIMIZATION OF A CONTEMPORARY HIGH PERFORMANCE SHADING SCREEN- INTEGRATION OF lsquoFORMrsquo AND SIMULATION TOOLS
Azadeh Omidfar Proceedings of Building Simulation 2011 12th Conference of International Building Performance Simulation Association Sydney 14-16 November
08-10-2011 wwwzebaaudk 20
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 21
Inde Ude
Glass Cavity Shading
aconvcav
esurf
aconvcav
etech
Uwin
Uwin
Rtech
Fs vs
tsol sol sol
aconvamb
etech
troom
(4) tsurf
(1) tcavity
(2) ttech
(3) ttech tamb
tsky
Experimental setup - PCM in glazing
08-10-2011 wwwzebaaudk 22
Model development - PCM in glazing
08-10-2011 wwwzebaaudk 23 Not published Do not cite
Energy balance for glazing - Potential in glazing systems
liquidliquidsolid
melt
k
radk
i
k
i
TT
Ti
aaaa
2
14tan2
1
1
1What are the optical
properties under different phases
000
020
040
060
080
100
120
297
2972
5
2975
2977
5
298
2982
5
2985
2987
5
299
2992
5
2995
2997
5
300
3002
5
3005
3007
5
301
3012
5
3015
3017
5
302
Absorbtion Abs1 Abs2 Abs3 Tsol Rfsol
08-10-2011 24 wwwzebaaudk Not published Do not cite
Energy balance for glazing - Potential in glazing systems
Room temperature 24 degC
PCM Glass
3 Layered Glass
08-10-2011 25 wwwzebaaudk Not published Do not cite
Energy balance for glazing - Potential in glazing systems
bull Use of PCM with high phase change temperature can reduce maximum cooling load ndash hellip Reduced view when
material is translucent
bull Use of PCM with low
phase change temperature can reduce heat load ndash hellip Risk of the material
not changing phase during daytime hours
08-10-2011 wwwzebaaudk 26
Intelligent Glazed Facades - Conclusion
08-10-2011 wwwzebaaudk 27
bull Focus should not only be put on
ndash U-value
ndash g-values
bull hellip but on how the faccedilade can change characteristic eg ndash High U-value to low
U-value ndash High g-value to low
g-value
Intelligent Glazed Facades - Discussion Design process
08-10-2011 wwwzebaaudk 28
Intelligent Glazed Facades - Discussion Benefits amp flaws
bull These results show that modern office buildings which fulfil energy regulations from 2008 can minimize energy demand for building services by 76 by introducing dynamic faccedilade technologies
bull But a flaw in the technologies and the used control strategies will result in no energy savings
08-10-2011 wwwzebaaudk 29
Intelligent Glazed Facades - an experimental study
Frederik V Winther
PhD Fellow
fvwcivilaaudk
Aalborg University
Department of Civil Engineering
08-10-2011 30 wwwzebaaudk
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 19
DESIGN OPTIMIZATION OF A CONTEMPORARY HIGH PERFORMANCE SHADING SCREEN- INTEGRATION OF lsquoFORMrsquo AND SIMULATION TOOLS
Azadeh Omidfar Proceedings of Building Simulation 2011 12th Conference of International Building Performance Simulation Association Sydney 14-16 November
08-10-2011 wwwzebaaudk 20
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 21
Inde Ude
Glass Cavity Shading
aconvcav
esurf
aconvcav
etech
Uwin
Uwin
Rtech
Fs vs
tsol sol sol
aconvamb
etech
troom
(4) tsurf
(1) tcavity
(2) ttech
(3) ttech tamb
tsky
Experimental setup - PCM in glazing
08-10-2011 wwwzebaaudk 22
Model development - PCM in glazing
08-10-2011 wwwzebaaudk 23 Not published Do not cite
Energy balance for glazing - Potential in glazing systems
liquidliquidsolid
melt
k
radk
i
k
i
TT
Ti
aaaa
2
14tan2
1
1
1What are the optical
properties under different phases
000
020
040
060
080
100
120
297
2972
5
2975
2977
5
298
2982
5
2985
2987
5
299
2992
5
2995
2997
5
300
3002
5
3005
3007
5
301
3012
5
3015
3017
5
302
Absorbtion Abs1 Abs2 Abs3 Tsol Rfsol
08-10-2011 24 wwwzebaaudk Not published Do not cite
Energy balance for glazing - Potential in glazing systems
Room temperature 24 degC
PCM Glass
3 Layered Glass
08-10-2011 25 wwwzebaaudk Not published Do not cite
Energy balance for glazing - Potential in glazing systems
bull Use of PCM with high phase change temperature can reduce maximum cooling load ndash hellip Reduced view when
material is translucent
bull Use of PCM with low
phase change temperature can reduce heat load ndash hellip Risk of the material
not changing phase during daytime hours
08-10-2011 wwwzebaaudk 26
Intelligent Glazed Facades - Conclusion
08-10-2011 wwwzebaaudk 27
bull Focus should not only be put on
ndash U-value
ndash g-values
bull hellip but on how the faccedilade can change characteristic eg ndash High U-value to low
U-value ndash High g-value to low
g-value
Intelligent Glazed Facades - Discussion Design process
08-10-2011 wwwzebaaudk 28
Intelligent Glazed Facades - Discussion Benefits amp flaws
bull These results show that modern office buildings which fulfil energy regulations from 2008 can minimize energy demand for building services by 76 by introducing dynamic faccedilade technologies
bull But a flaw in the technologies and the used control strategies will result in no energy savings
08-10-2011 wwwzebaaudk 29
Intelligent Glazed Facades - an experimental study
Frederik V Winther
PhD Fellow
fvwcivilaaudk
Aalborg University
Department of Civil Engineering
08-10-2011 30 wwwzebaaudk
DESIGN OPTIMIZATION OF A CONTEMPORARY HIGH PERFORMANCE SHADING SCREEN- INTEGRATION OF lsquoFORMrsquo AND SIMULATION TOOLS
Azadeh Omidfar Proceedings of Building Simulation 2011 12th Conference of International Building Performance Simulation Association Sydney 14-16 November
08-10-2011 wwwzebaaudk 20
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 21
Inde Ude
Glass Cavity Shading
aconvcav
esurf
aconvcav
etech
Uwin
Uwin
Rtech
Fs vs
tsol sol sol
aconvamb
etech
troom
(4) tsurf
(1) tcavity
(2) ttech
(3) ttech tamb
tsky
Experimental setup - PCM in glazing
08-10-2011 wwwzebaaudk 22
Model development - PCM in glazing
08-10-2011 wwwzebaaudk 23 Not published Do not cite
Energy balance for glazing - Potential in glazing systems
liquidliquidsolid
melt
k
radk
i
k
i
TT
Ti
aaaa
2
14tan2
1
1
1What are the optical
properties under different phases
000
020
040
060
080
100
120
297
2972
5
2975
2977
5
298
2982
5
2985
2987
5
299
2992
5
2995
2997
5
300
3002
5
3005
3007
5
301
3012
5
3015
3017
5
302
Absorbtion Abs1 Abs2 Abs3 Tsol Rfsol
08-10-2011 24 wwwzebaaudk Not published Do not cite
Energy balance for glazing - Potential in glazing systems
Room temperature 24 degC
PCM Glass
3 Layered Glass
08-10-2011 25 wwwzebaaudk Not published Do not cite
Energy balance for glazing - Potential in glazing systems
bull Use of PCM with high phase change temperature can reduce maximum cooling load ndash hellip Reduced view when
material is translucent
bull Use of PCM with low
phase change temperature can reduce heat load ndash hellip Risk of the material
not changing phase during daytime hours
08-10-2011 wwwzebaaudk 26
Intelligent Glazed Facades - Conclusion
08-10-2011 wwwzebaaudk 27
bull Focus should not only be put on
ndash U-value
ndash g-values
bull hellip but on how the faccedilade can change characteristic eg ndash High U-value to low
U-value ndash High g-value to low
g-value
Intelligent Glazed Facades - Discussion Design process
08-10-2011 wwwzebaaudk 28
Intelligent Glazed Facades - Discussion Benefits amp flaws
bull These results show that modern office buildings which fulfil energy regulations from 2008 can minimize energy demand for building services by 76 by introducing dynamic faccedilade technologies
bull But a flaw in the technologies and the used control strategies will result in no energy savings
08-10-2011 wwwzebaaudk 29
Intelligent Glazed Facades - an experimental study
Frederik V Winther
PhD Fellow
fvwcivilaaudk
Aalborg University
Department of Civil Engineering
08-10-2011 30 wwwzebaaudk
Model development - Dynamic g-value
08-10-2011 wwwzebaaudk 21
Inde Ude
Glass Cavity Shading
aconvcav
esurf
aconvcav
etech
Uwin
Uwin
Rtech
Fs vs
tsol sol sol
aconvamb
etech
troom
(4) tsurf
(1) tcavity
(2) ttech
(3) ttech tamb
tsky
Experimental setup - PCM in glazing
08-10-2011 wwwzebaaudk 22
Model development - PCM in glazing
08-10-2011 wwwzebaaudk 23 Not published Do not cite
Energy balance for glazing - Potential in glazing systems
liquidliquidsolid
melt
k
radk
i
k
i
TT
Ti
aaaa
2
14tan2
1
1
1What are the optical
properties under different phases
000
020
040
060
080
100
120
297
2972
5
2975
2977
5
298
2982
5
2985
2987
5
299
2992
5
2995
2997
5
300
3002
5
3005
3007
5
301
3012
5
3015
3017
5
302
Absorbtion Abs1 Abs2 Abs3 Tsol Rfsol
08-10-2011 24 wwwzebaaudk Not published Do not cite
Energy balance for glazing - Potential in glazing systems
Room temperature 24 degC
PCM Glass
3 Layered Glass
08-10-2011 25 wwwzebaaudk Not published Do not cite
Energy balance for glazing - Potential in glazing systems
bull Use of PCM with high phase change temperature can reduce maximum cooling load ndash hellip Reduced view when
material is translucent
bull Use of PCM with low
phase change temperature can reduce heat load ndash hellip Risk of the material
not changing phase during daytime hours
08-10-2011 wwwzebaaudk 26
Intelligent Glazed Facades - Conclusion
08-10-2011 wwwzebaaudk 27
bull Focus should not only be put on
ndash U-value
ndash g-values
bull hellip but on how the faccedilade can change characteristic eg ndash High U-value to low
U-value ndash High g-value to low
g-value
Intelligent Glazed Facades - Discussion Design process
08-10-2011 wwwzebaaudk 28
Intelligent Glazed Facades - Discussion Benefits amp flaws
bull These results show that modern office buildings which fulfil energy regulations from 2008 can minimize energy demand for building services by 76 by introducing dynamic faccedilade technologies
bull But a flaw in the technologies and the used control strategies will result in no energy savings
08-10-2011 wwwzebaaudk 29
Intelligent Glazed Facades - an experimental study
Frederik V Winther
PhD Fellow
fvwcivilaaudk
Aalborg University
Department of Civil Engineering
08-10-2011 30 wwwzebaaudk
Experimental setup - PCM in glazing
08-10-2011 wwwzebaaudk 22
Model development - PCM in glazing
08-10-2011 wwwzebaaudk 23 Not published Do not cite
Energy balance for glazing - Potential in glazing systems
liquidliquidsolid
melt
k
radk
i
k
i
TT
Ti
aaaa
2
14tan2
1
1
1What are the optical
properties under different phases
000
020
040
060
080
100
120
297
2972
5
2975
2977
5
298
2982
5
2985
2987
5
299
2992
5
2995
2997
5
300
3002
5
3005
3007
5
301
3012
5
3015
3017
5
302
Absorbtion Abs1 Abs2 Abs3 Tsol Rfsol
08-10-2011 24 wwwzebaaudk Not published Do not cite
Energy balance for glazing - Potential in glazing systems
Room temperature 24 degC
PCM Glass
3 Layered Glass
08-10-2011 25 wwwzebaaudk Not published Do not cite
Energy balance for glazing - Potential in glazing systems
bull Use of PCM with high phase change temperature can reduce maximum cooling load ndash hellip Reduced view when
material is translucent
bull Use of PCM with low
phase change temperature can reduce heat load ndash hellip Risk of the material
not changing phase during daytime hours
08-10-2011 wwwzebaaudk 26
Intelligent Glazed Facades - Conclusion
08-10-2011 wwwzebaaudk 27
bull Focus should not only be put on
ndash U-value
ndash g-values
bull hellip but on how the faccedilade can change characteristic eg ndash High U-value to low
U-value ndash High g-value to low
g-value
Intelligent Glazed Facades - Discussion Design process
08-10-2011 wwwzebaaudk 28
Intelligent Glazed Facades - Discussion Benefits amp flaws
bull These results show that modern office buildings which fulfil energy regulations from 2008 can minimize energy demand for building services by 76 by introducing dynamic faccedilade technologies
bull But a flaw in the technologies and the used control strategies will result in no energy savings
08-10-2011 wwwzebaaudk 29
Intelligent Glazed Facades - an experimental study
Frederik V Winther
PhD Fellow
fvwcivilaaudk
Aalborg University
Department of Civil Engineering
08-10-2011 30 wwwzebaaudk
Model development - PCM in glazing
08-10-2011 wwwzebaaudk 23 Not published Do not cite
Energy balance for glazing - Potential in glazing systems
liquidliquidsolid
melt
k
radk
i
k
i
TT
Ti
aaaa
2
14tan2
1
1
1What are the optical
properties under different phases
000
020
040
060
080
100
120
297
2972
5
2975
2977
5
298
2982
5
2985
2987
5
299
2992
5
2995
2997
5
300
3002
5
3005
3007
5
301
3012
5
3015
3017
5
302
Absorbtion Abs1 Abs2 Abs3 Tsol Rfsol
08-10-2011 24 wwwzebaaudk Not published Do not cite
Energy balance for glazing - Potential in glazing systems
Room temperature 24 degC
PCM Glass
3 Layered Glass
08-10-2011 25 wwwzebaaudk Not published Do not cite
Energy balance for glazing - Potential in glazing systems
bull Use of PCM with high phase change temperature can reduce maximum cooling load ndash hellip Reduced view when
material is translucent
bull Use of PCM with low
phase change temperature can reduce heat load ndash hellip Risk of the material
not changing phase during daytime hours
08-10-2011 wwwzebaaudk 26
Intelligent Glazed Facades - Conclusion
08-10-2011 wwwzebaaudk 27
bull Focus should not only be put on
ndash U-value
ndash g-values
bull hellip but on how the faccedilade can change characteristic eg ndash High U-value to low
U-value ndash High g-value to low
g-value
Intelligent Glazed Facades - Discussion Design process
08-10-2011 wwwzebaaudk 28
Intelligent Glazed Facades - Discussion Benefits amp flaws
bull These results show that modern office buildings which fulfil energy regulations from 2008 can minimize energy demand for building services by 76 by introducing dynamic faccedilade technologies
bull But a flaw in the technologies and the used control strategies will result in no energy savings
08-10-2011 wwwzebaaudk 29
Intelligent Glazed Facades - an experimental study
Frederik V Winther
PhD Fellow
fvwcivilaaudk
Aalborg University
Department of Civil Engineering
08-10-2011 30 wwwzebaaudk
Energy balance for glazing - Potential in glazing systems
liquidliquidsolid
melt
k
radk
i
k
i
TT
Ti
aaaa
2
14tan2
1
1
1What are the optical
properties under different phases
000
020
040
060
080
100
120
297
2972
5
2975
2977
5
298
2982
5
2985
2987
5
299
2992
5
2995
2997
5
300
3002
5
3005
3007
5
301
3012
5
3015
3017
5
302
Absorbtion Abs1 Abs2 Abs3 Tsol Rfsol
08-10-2011 24 wwwzebaaudk Not published Do not cite
Energy balance for glazing - Potential in glazing systems
Room temperature 24 degC
PCM Glass
3 Layered Glass
08-10-2011 25 wwwzebaaudk Not published Do not cite
Energy balance for glazing - Potential in glazing systems
bull Use of PCM with high phase change temperature can reduce maximum cooling load ndash hellip Reduced view when
material is translucent
bull Use of PCM with low
phase change temperature can reduce heat load ndash hellip Risk of the material
not changing phase during daytime hours
08-10-2011 wwwzebaaudk 26
Intelligent Glazed Facades - Conclusion
08-10-2011 wwwzebaaudk 27
bull Focus should not only be put on
ndash U-value
ndash g-values
bull hellip but on how the faccedilade can change characteristic eg ndash High U-value to low
U-value ndash High g-value to low
g-value
Intelligent Glazed Facades - Discussion Design process
08-10-2011 wwwzebaaudk 28
Intelligent Glazed Facades - Discussion Benefits amp flaws
bull These results show that modern office buildings which fulfil energy regulations from 2008 can minimize energy demand for building services by 76 by introducing dynamic faccedilade technologies
bull But a flaw in the technologies and the used control strategies will result in no energy savings
08-10-2011 wwwzebaaudk 29
Intelligent Glazed Facades - an experimental study
Frederik V Winther
PhD Fellow
fvwcivilaaudk
Aalborg University
Department of Civil Engineering
08-10-2011 30 wwwzebaaudk
Energy balance for glazing - Potential in glazing systems
Room temperature 24 degC
PCM Glass
3 Layered Glass
08-10-2011 25 wwwzebaaudk Not published Do not cite
Energy balance for glazing - Potential in glazing systems
bull Use of PCM with high phase change temperature can reduce maximum cooling load ndash hellip Reduced view when
material is translucent
bull Use of PCM with low
phase change temperature can reduce heat load ndash hellip Risk of the material
not changing phase during daytime hours
08-10-2011 wwwzebaaudk 26
Intelligent Glazed Facades - Conclusion
08-10-2011 wwwzebaaudk 27
bull Focus should not only be put on
ndash U-value
ndash g-values
bull hellip but on how the faccedilade can change characteristic eg ndash High U-value to low
U-value ndash High g-value to low
g-value
Intelligent Glazed Facades - Discussion Design process
08-10-2011 wwwzebaaudk 28
Intelligent Glazed Facades - Discussion Benefits amp flaws
bull These results show that modern office buildings which fulfil energy regulations from 2008 can minimize energy demand for building services by 76 by introducing dynamic faccedilade technologies
bull But a flaw in the technologies and the used control strategies will result in no energy savings
08-10-2011 wwwzebaaudk 29
Intelligent Glazed Facades - an experimental study
Frederik V Winther
PhD Fellow
fvwcivilaaudk
Aalborg University
Department of Civil Engineering
08-10-2011 30 wwwzebaaudk
Energy balance for glazing - Potential in glazing systems
bull Use of PCM with high phase change temperature can reduce maximum cooling load ndash hellip Reduced view when
material is translucent
bull Use of PCM with low
phase change temperature can reduce heat load ndash hellip Risk of the material
not changing phase during daytime hours
08-10-2011 wwwzebaaudk 26
Intelligent Glazed Facades - Conclusion
08-10-2011 wwwzebaaudk 27
bull Focus should not only be put on
ndash U-value
ndash g-values
bull hellip but on how the faccedilade can change characteristic eg ndash High U-value to low
U-value ndash High g-value to low
g-value
Intelligent Glazed Facades - Discussion Design process
08-10-2011 wwwzebaaudk 28
Intelligent Glazed Facades - Discussion Benefits amp flaws
bull These results show that modern office buildings which fulfil energy regulations from 2008 can minimize energy demand for building services by 76 by introducing dynamic faccedilade technologies
bull But a flaw in the technologies and the used control strategies will result in no energy savings
08-10-2011 wwwzebaaudk 29
Intelligent Glazed Facades - an experimental study
Frederik V Winther
PhD Fellow
fvwcivilaaudk
Aalborg University
Department of Civil Engineering
08-10-2011 30 wwwzebaaudk
Intelligent Glazed Facades - Conclusion
08-10-2011 wwwzebaaudk 27
bull Focus should not only be put on
ndash U-value
ndash g-values
bull hellip but on how the faccedilade can change characteristic eg ndash High U-value to low
U-value ndash High g-value to low
g-value
Intelligent Glazed Facades - Discussion Design process
08-10-2011 wwwzebaaudk 28
Intelligent Glazed Facades - Discussion Benefits amp flaws
bull These results show that modern office buildings which fulfil energy regulations from 2008 can minimize energy demand for building services by 76 by introducing dynamic faccedilade technologies
bull But a flaw in the technologies and the used control strategies will result in no energy savings
08-10-2011 wwwzebaaudk 29
Intelligent Glazed Facades - an experimental study
Frederik V Winther
PhD Fellow
fvwcivilaaudk
Aalborg University
Department of Civil Engineering
08-10-2011 30 wwwzebaaudk
Intelligent Glazed Facades - Discussion Design process
08-10-2011 wwwzebaaudk 28
Intelligent Glazed Facades - Discussion Benefits amp flaws
bull These results show that modern office buildings which fulfil energy regulations from 2008 can minimize energy demand for building services by 76 by introducing dynamic faccedilade technologies
bull But a flaw in the technologies and the used control strategies will result in no energy savings
08-10-2011 wwwzebaaudk 29
Intelligent Glazed Facades - an experimental study
Frederik V Winther
PhD Fellow
fvwcivilaaudk
Aalborg University
Department of Civil Engineering
08-10-2011 30 wwwzebaaudk
Intelligent Glazed Facades - Discussion Benefits amp flaws
bull These results show that modern office buildings which fulfil energy regulations from 2008 can minimize energy demand for building services by 76 by introducing dynamic faccedilade technologies
bull But a flaw in the technologies and the used control strategies will result in no energy savings
08-10-2011 wwwzebaaudk 29
Intelligent Glazed Facades - an experimental study
Frederik V Winther
PhD Fellow
fvwcivilaaudk
Aalborg University
Department of Civil Engineering
08-10-2011 30 wwwzebaaudk
Intelligent Glazed Facades - an experimental study
Frederik V Winther
PhD Fellow
fvwcivilaaudk
Aalborg University
Department of Civil Engineering
08-10-2011 30 wwwzebaaudk
