Upload
bryce
View
42
Download
0
Embed Size (px)
DESCRIPTION
KTU Institut e Of Architecture And Construction Laborator y Of Building Thermal Physics. Renovation Effect on Building Energy Perfornance Indicator. dr. Edmundas Monstvilas. RENOVATION EFFECT ON BUILDING ENERGY PERFOR M ANCE INDICATOR. - PowerPoint PPT Presentation
Citation preview
Renovation Effect on Building Renovation Effect on Building Energy Perfornance IndicatorEnergy Perfornance Indicator
KTU Institute Of Architecture And Construction
Laboratory Of Building Thermal Physics
dr. Edmundas Monstvilas
The estimation of possible energy saving measures is The estimation of possible energy saving measures is included into the requirements The National Building included into the requirements The National Building Code (Code (NBCNBC) ) Energy Performance Of Buildings. Energy Performance Of Buildings. Certification Of Buildings Energy PerformanceCertification Of Buildings Energy Performance. .
The building energy performance certification client The building energy performance certification client is is givengiven with certificate additionally the with certificate additionally the calculation results of calculation results of possible energy saving measures effect to the improvement possible energy saving measures effect to the improvement of the building energy performance.of the building energy performance. The special The special calculation sub-section is included into The calculation calculation sub-section is included into The calculation program, compiled to the NBC. program, compiled to the NBC.
RENOVATION EFFECTRENOVATION EFFECT ON BUILDING ENERGY ON BUILDING ENERGY PERFORPERFORMMANCE INDICATORANCE INDICATOR
ENERGENERGY PERFORMANCEY PERFORMANCE of of 5 5 Stories,Stories, 3 3 StaircasesStaircases 45 45 Apartment Apartment
BuildingBuildingINPUT DATA INPUT DATA :: Heated areaHeated area 2700 m2; 2700 m2; Window areaWindow area 15 15%% from heated areafrom heated area;; Ventilation naturalVentilation natural;; Domestic hot water supply from substation in Domestic hot water supply from substation in
building with manual control; building with manual control; Temperature control in heating system is absent;Temperature control in heating system is absent; Heat source: district heatingHeat source: district heating ( (manual controlmanual control).).
EnergEnergy performancey performance of of 5 5 Stories,Stories, 3 3 StaircasesStaircases 45 45 Apartment Apartment Building, Building, Existing stateExisting state
SUM ENERGY CONSUMPTION IN BUILDING FOR 1M2 OF HEATED AREA 255,71
BUILDING CLASSIFICATION INDICATOR VALUE 2,25
BUILDING ENERGY PERFORMANCE CLASS E
If energy price is 0,15 Lt/kWh, average heating cost during the heating season is 2,63 Lt/(m2.month.)
Walls; 63,7
Roof; 21,8Ceiling over crawl; 9,1
Windows; 36,3
Thermal bridges; 13,9
Air infiltration; 29,2
THE SAME BUILDING, CHANGED WINDOWS AND DOORS IN THE SAME BUILDING, CHANGED WINDOWS AND DOORS IN ACCORDANCE WITH REQUIREMENTS OF 2006ACCORDANCE WITH REQUIREMENTS OF 2006, ,
WALLS, ROOF AND CEILING OVER BASEMENT WITHOUT INSULATIONWALLS, ROOF AND CEILING OVER BASEMENT WITHOUT INSULATION
SUM ENERGY CONSUMPTION IN BUILDING FOR 1M2 OF HEATED AREA 210,68
BUILDING CLASSIFICATION INDICATOR VALUE 2,02
BUILDING ENERGY PERFORMANCE CLASS E
If energy price is 0,15 Lt/kWh, average heating cost during the heating season is 2,06 Lt/(m2.month.)
Walls 63,7
Roof 21,8
Ceiling over crawl 9,1
Windows 23,2
Thermal bridges 13,9
Air infiltration 4,7
THE SAME BUILDING,INSULATED WALLS AND ROOFTHE SAME BUILDING,INSULATED WALLS AND ROOFIN ACCORDANCE WITH REQUIREMENTS OF 2006IN ACCORDANCE WITH REQUIREMENTS OF 2006, ,
UNCHANGED WINDOWS, CEILING OVER BASEMENT WITHOUT UNCHANGED WINDOWS, CEILING OVER BASEMENT WITHOUT INSULATIONINSULATION
SUM ENERGY CONSUMPTION IN BUILDING FOR 1M2 OF HEATED AREA 165,65
BUILDING CLASSIFICATION INDICATOR VALUE 1,58
BUILDING ENERGY PERFORMANCE CLASS D
sienos
Walls 10
Roof 4,1
Ceiling over crawl 9,1
Windows 36,3Thermal
bridges 13,9
Air infiltration 29,2
If energy price is 0,15 Lt/kWh, average heating cost during the heating season is 1,65 Lt/(m2.month.)
THE SAME BUILDING, IN ACCORDANCE WITH THE SAME BUILDING, IN ACCORDANCE WITH REQUIREMENTS OF 2006REQUIREMENTS OF 2006
SUM ENERGY CONSUMPTION IN BUILDING FOR 1M2 OF HEATED AREA 102,32
BUILDING CLASSIFICATION INDICATOR VALUE 0,89
BUILDING ENERGY PERFORMANCE CLASS B
Walls 10
Roof 4,1
Ceiling over crawl 4,4Windows 23,2
Thermal bridges 3,9
Air infiltration 4,7
If energy price is 0,15 Lt/kWh, average heating cost during the heating season is 0,71 Lt/(m2.month.)
Efficiency of energy saving measures at Efficiency of energy saving measures at implementation in big apartment buildingsimplementation in big apartment buildings
with low energy performancewith low energy performance
MEASURE WITH PARAMETERS IN ACCORDANCE MEASURE WITH PARAMETERS IN ACCORDANCE WITH RECENT REQUIREMENTSWITH RECENT REQUIREMENTS
Savings, Savings,
kWh/(mkWh/(m22. metai). metai)
CHANGE OF WINDOWSCHANGE OF WINDOWS
Energy savings due to improvement of thermal Energy savings due to improvement of thermal insulation insulation 3636,,3-233-23,,22==13,113,1 kWh/(mkWh/(m22. . yearyear)),,
Energy saving due to air infiltration reduction Energy saving due to air infiltration reduction
29,2-4,7 29,2-4,7 ==24,524,5 kWh/(mkWh/(m22. . yearyear))
37,637,6
INSULATION OF WALLS AND ROOF INSULATION OF WALLS AND ROOF
63,7+21,8-10-4,163,7+21,8-10-4,1==71,471,4 kWh/(mkWh/(m22. . yearyear))71,471,4
INSULATION OF CEILING OVER BASEMENTINSULATION OF CEILING OVER BASEMENT
9,1-4,49,1-4,4==4,74,7 kWh/(mkWh/(m22. . yearyear))4,74,7
SUM ENERGY CONSUMPTION IN BUILDING FOR 1M2 OF HEATED AREA BEFORE IMPLEMENTATION 272,58 kWh/(m2.year)
ANALYSIS OF MOST POPULAR ENERGY SAVING ANALYSIS OF MOST POPULAR ENERGY SAVING MEASURES IN MULTI-APARTMENT BUILDINGSMEASURES IN MULTI-APARTMENT BUILDINGS
SUM ENERGY CONSUMPTION IN BUILDING FOR 1M2 OF HEATED AREA, 187,51 kWh/(m2.year)
ANNUAL ENERGY CONSUMPTION FOR HEATING FOR 1M2 OF HEATED AREA, 145,46 kWh/(m2.year)
IF ENERGY PRICE IS 0,15 LT/KWh, AVERAGE HEATING COST DURING THE HEATING SEASON IS 1,82 LT/(M2.MONTH.)
I-I-stst buildingbuilding.. Walls and roof un-insulated. Walls and roof un-insulated. Windows and doors old. Windows and doors old. DHW supply from heat sub-station, DHW supply from heat sub-station, Temperature control in heating Temperature control in heating
systems is absent, systems is absent, Heat supply from district heating Heat supply from district heating
pipelines (manual control)pipelines (manual control)
II-II-dd buildingbuilding.. Walls and roof un-insulated. Walls and roof un-insulated. Windows and doors Windows and doors newnew. . DHW supply from heat sub-station DHW supply from heat sub-station with automatic controlwith automatic control, , temperature control in heating temperature control in heating systems systems for the whole building with for the whole building with thermostatic valves on radiators and thermostatic valves on radiators and outdoor (indoor) temperature outdoor (indoor) temperature sensors,sensors, heat supply from district heating heat supply from district heating pipelines (pipelines (automatic control)automatic control)
SUM ENERGY CONSUMPTION IN BUILDING FOR 1M2 OF HEATED AREA, 255,71 kWh/(m2.year)
ANNUAL ENERGY CONSUMPTION FOR HEATING FOR 1M2 OF HEATED AREA, 209,71 kWh/(m2.year)
IF ENERGY PRICE IS 0,15 LT/KWh, AVERAGE HEATING COST DURING THE HEATING SEASON IS 2,63 LT/(M2.MONTH.)
SUM ENERGY CONSUMPTION IN BUILDING FOR 1M2 OF HEATED AREA 85,71
BUILDING CLASSIFICATION INDICATOR VALUE 0,73
BUILDING ENERGY PERFORMANCE CLASS B
THE SAME BUILDING, IN ACCORDANCE WITH THE SAME BUILDING, IN ACCORDANCE WITH REQUIREMENTS OF 2006, REQUIREMENTS OF 2006,
All Possible energy saving measures, Without heat pumpAll Possible energy saving measures, Without heat pump
Walls 10,03
Roof 4,1
Ceiling over crawl 4,36
Windows 17,41
Thermal bridges 3,88
Ventilation 24,04
If energy price is 0,15 Lt/kWh, average heating cost during the heating season is 0,55 Lt/(m2.month.)
THE SAME BUILDING, IN ACCORDANCE WITH THE SAME BUILDING, IN ACCORDANCE WITH REQUIREMENTS OF 2006, REQUIREMENTS OF 2006,
All Possible energy saving measures, with heat pumpAll Possible energy saving measures, with heat pump
SUM ENERGY CONSUMPTION IN BUILDING FOR 1M2 OF HEATED AREA 85,71
BUILDING CLASSIFICATION INDICATOR VALUE 0,73
BUILDING ENERGY PERFORMANCE CLASS B
Walls 10,03
Roof 4,1
Ceiling over basement
4,36
Windows 17,41
Thermal bridges 3,88
Ventilation 24
If energy price is 0,15 Lt/kWh, average heating cost during the heating season is 0,50 Lt/(m2.month.)
Energy performance class and energy Energy performance class and energy consumption level in respect to applied energy consumption level in respect to applied energy
saving measuressaving measures
81,74
85,71
102,32
165,66
210,58
255,71
0 50 100 150 200 250 300
B-0,70, Heat pump and requirements of2006
B-0,73, Ideal building, requirements of2006
B-0,89, Middle quality building,requirements of 2006
D-1,58, Existing building, insulated roofand walls
E-2,02, Existing building, changedwindows and doors
E-2,25, Existing building, quality of 1192
SUM ENERGY CONSUMPTION IN BUILDING FOR 1M2 OF HEATED AREA
sienos
Walls 10
Roof 4,1
Ceiling over crawl 9,1
Windows 36,3Thermal
bridges 13,9
Air infiltration 29,2
Walls 25,7
Roof 17,4
Floor on ground 21,4
Windows 30,2
Thermal bridges 13,9
Air infiltration 30,5SUM ENERGY CONSUMPTION IN BUILDING
FOR 1M2 OF HEATED AREA 166,31
BUILDING CLASSIFICATION INDICATOR VALUE 0,76
BUILDING ENERGY PERFORMANCE CLASS B
COMPARISON OF THE ENERGY PERFORMACE INDICES COMPARISON OF THE ENERGY PERFORMACE INDICES FOR FAMILY AND APARTMENT BUILDINGSFOR FAMILY AND APARTMENT BUILDINGS
Under requirements of 2006Under requirements of 2006
Family house, heated area: 175 m2
Apartment building, heated area: 2700 m2
SUM ENERGY CONSUMPTION IN BUILDING FOR 1M2 OF HEATED AREA 102.32
BUILDING CLASSIFICATION INDICATOR VALUE 0,89
BUILDING ENERGY PERFORMANCE CLASS B
Annual heat losses for 1m2 of envelope area 37,74 kWh/(m2.year).
If energy price 0,15 Lt/kWh, average heating cost during heating season 1,78 Lt/(m2.month.)
Annual heat losses for 1m2 of envelope area 37,74 kWh/(m2.year).
If energy price 0,15 Lt/kWh, average heating cost during heating season 1,78 Lt/(m2.month.)
Apartment building of 2700 m2 heated area. Existing state. Energy consumption for heating at different average indoor temperature
119,66
164,68
132,15
158,00
183,85
209,71
0,00 50,00 100,00 150,00 200,00 250,00
Insulated roof and walls, average indoor temperature20C
Changed windows and doors, vidutinė patalpųtemperatūra žiemą 20C
Nerenovuotas pastatas, average indoor temperature14C
Existing state, average indoor temperature16C
Existing state, average indoor temperature 18C
Existing state, average indoor temperature 20C
Energy consumption for heating, kWh/(m2. year)
Apartment building of 2700 m2 heated area, built up to1992. New windows and doors, U-value 1,6 . Energy consumption for heating at different
average indoor temperature
101,94
122,85
143,76
164,68
0,00 20,00 40,00 60,00 80,00 100,00 120,00 140,00 160,00 180,00
Average indoortemperature 14C
Average indoortemperature 16C
Average indoortemperature 18C
Average indoortemperature 20C
Energy consumption for heating, kWh/(m2. year)
ENERGY CONSUMPTION FOR HEATING IN DEPENDENCE TO INDOOR TEMPERATURE
Apartment building of 2700 m2 heated area, built up to1992. Insulated roof and walls. Energy consumption for heating at different average indoor
temperature
69,95
86,52
103,09
119,66
0,00 20,00 40,00 60,00 80,00 100,00 120,00 140,00
Average indoortemperature 14C
Average indoortemperature 16C
Average indoortemperature 18C
Average indoortemperature 20C
Energy consumption for heating, kWh/(m2. year)
Real energy savings are closely related to the indoor climate conditions before renovation.
The values indicated in the certificate as energy savings may be not achieved after the implementation.
ENERGY CONSUMPTION FOR HEATING IN DEPENDENCE TO INDOOR TEMPERATURE
Apartment building of 2700 m2 heated area. Energy consumption for heating at different average indoor temperature
30,21
56,06
81,92
107,77
9,30
35,15
61,00
86,86
11,62-
14,24
40,09
65,94
32,53-
6,68-
19,18
45,03
-40 -20 0 20 40 60 80 100 120
14C / 14C
16C / 14C
18C / 14C
20C / 14C
14C / 16C
16C / 16C
18C / 16C
20C / 16C
14C / 18C
16C / 18C
18C / 18C
20C / 18C
14C / 20C
16C / 20C
18C / 20C
20C / 20C
Saved energy, kWh/(m2. year)
Existing state /New windows
and doors
ENERGY CONSUMPTION FOR HEATING IN DEPENDENCE TO INDOOR TEMPERATURE
Apartment building of 2700 m2 heated area. Energy consumption for heating at different average indoor temperature
62,19
88,05
113,90
139,75
45,62
71,48
97,33
123,18
29,05
54,91
80,76
106,61
12,48
38,34
64,19
90,04
0 20 40 60 80 100 120 140 160
14C / 14C
16C / 14C
18C / 14C
20C / 14C
14C / 16C
16C / 16C
18C / 16C
20C / 16C
14C / 18C
16C / 18C
18C / 18C
20C / 18C
14C / 20C
16C / 20C
18C / 20C
20C / 20C
Saved energy, kWh/(m2. year)
Insulated roof and walls
Existing state /
Better insulation of roof and walls in big apartment Better insulation of roof and walls in big apartment buildings provides significant energy savings, as well as buildings provides significant energy savings, as well as energy performance indicator value growth up by the energy performance indicator value growth up by the class. class.
Impact of better windows and door in energy Impact of better windows and door in energy performance is less significant, in most of cases this performance is less significant, in most of cases this measure do not change the energy performance class of measure do not change the energy performance class of the building, both for family houses or apartment the building, both for family houses or apartment buildings. buildings.
The designers and investors shall be immediately The designers and investors shall be immediately introduced to the energy performance certification and introduced to the energy performance certification and the impact of various energy saving measures on energy the impact of various energy saving measures on energy consumption. consumption.
ENERGY PERFORMANCE CLASS AND ENERGY ENERGY PERFORMANCE CLASS AND ENERGY CONSUMPTION LEVELCONSUMPTION LEVEL
Thanks for attention !