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ININ
John Dolan
BEng (Hons) M.Sc. Fire Eng
H.Dip CEng MIEI
Chartered Engineer
Planning & Building Unit
Tullamore
www.energyineducation.ie.
Energy in Schools
Energy in Schools
• our energy policy & design approach
• current research projects building towards
achieving new energy regulation targets
Energy in Schools
• our energy policy & design approach
energy in school design
• evolved from energy programme DART
(Design, Awareness, Research & Technology)
• informed by building unit professional &
technical staff & external partnerships
• driven by technical guidance documents
• updated by continued energy research & development
• disseminated by internal / external publications, conferences & annual report
• specific project support from SEAI
• acknowledged by national &
international energy awards
maximising
nature
• passive solar design
• daylighting
• quality ventilation
utilising
technologies
• enhanced insulation
• air tightness
• lighting & controls
• heating & controls
• water efficiency
• I.T. & web based
technologies
issues particular to schools
• schools needs: not same as domestic market
needs (different operational profiles)
• short hours of operation
• technical ability on site
• energy not core function
• solutions must be robust
energy usage in new primary schools
0
50
100
150
200
250
Schools
built in
1980's
Schools
built in
1990's
Schools,
Best
Practice
Current
school
designs
based on
TGD's
Energy used
kWhr/m2/year
usage in new primary schools
renewables in schools
• thermal solar
• photovoltaic
• wind
• biomass
Energy in Schools
• our energy policy & design approach
• current research projects building towards
achieving new energy regulation targets
SEAI
Sustainability in the Built
Environment Award 2012
Colaiste Choilm Tullamore – Ireland’s
Lowest Energy Secondary School
Colaiste Choilm Tullamore – integrated team
approach from initial project development
• Department of Education & Skills
Architectural: Frank Lewis, QS Shay O Malley
Energy Co-ordinator/ Senior Engineer: John Dolan
Inspectorate Martin Bryan
• Project Architects: Coady Partnership, Anne Fletcher, William Gleeson, COW Sean Fahy
• Building Services: BDP – Chris Croly, Edel Donnelly, Adrian Phelan
• Quantity Surveyors: MJ Turley- Robert Ogle
• PSDS: OLM Consulting Engineers
• Structural Engineers: Nicholas O Dwyer – Mark Dignam
• The School: Colin Roddy Principal, Staff, Pupils & BOM
• Builders: John Sisk & Son
• improved air tightness
• automated natural ventilation
• enhanced insulation levels
• advanced control strategies
• biomass heating
• micro chp system
• photovoltaic system
• A2 BER
•Colaiste Choilm Tullamore
0
50
100
150
200
250
Schools
built in
1980's
Schools
built in
1990's
Schools,
Best
Practice
Current
school
designs
based on
TGD's
Colaiste
Choilm
Energy used
kWhr/m2/year
Colaiste Choilm
main achievements
• quality sustainable educational facility, fit for purpose
• real time laboratory testing and providing automated and
user feedbac
•k on a range of low energy design solutions
• maximising rainwater recovery with 87% mains
water replacement to date
• 59% improvement over Part L and 45% carbon
dioxide emissions reductions. EPC ratio of 0.41
• air leakage test result 1.8 m3/m2/Hr @ 50 Pa, (64% improvement on current Department standard, 75% better than
comparative building standards)
Passive Research Projects
• passive schools
• passive classrooms
0
50
100
150
200
250
Schoolsbuilt in1980's
Schoolsbuilt in1990's
Schools,Best
PracticeCIBSE
Currentschool
designsbased on
TGD's
Passiveschools
Energy used
kWhr/m2/year
NZEB new builds & BER uplift existing schools
The Downs N.S. Mullingar
&
St. Catherine's N.S. Aughrim
NZEB Schools – integrated team approach from
initial project development
• Department of Education & Skills
Architectural: Aisling Flanagan, Niall Lowther, Frank Lewis, Paul o Sullivan, Stephen Lynam, Kevin Kennedy, Mark Cunningham
QS John Harnett
Energy Co-ordinator/ Senior Engineer: John Dolan
• Building Services: Glenn Nunan Consulting Engineers
• Quantity Surveyors: MJ Turley- Michael Turley St Catherine’s NS Padraig Arthur & Associates - Padraig Arthur - The Downs NS
Civil/ Structural Engineers/ PSDP: ORS Consulting Engineers
Cormac Meaney
• The Schools: Principals, Staff, Pupils & BOM
• Builders: not tendered yet
Future regulatory requirements on
new build
building regulations 2015
near zero energy buildings (NZEB) 31 DEC 2018
Future regulatory requirements on
existing school stock
33% energy efficiency improvement by 2020
the National Energy Efficiency Action Plan 2009-2020 aims to ensure that by 2020, all public sector buildings over 1,000 m2
have their D.E.C. improved to D1 or higher.
St. Catherine’s National
School, Aughrim.
The Downs
National School,
Mullingar.
St. Catherine’s
National School,
Aughrim.
initial energy targets
• Option A 55 kWh/m2 * with 10% renewables
• Option B 50 kWh/m2 * with no renewables
• Option C 40 kWh/m2 * with 20% renewables
* primary energy
model parameters
• Dry resultant temp does not exceed 25 0C for
5% of occupied year
• Occupied period 1st Sept to 21 June (183 days)
• Occupancy 9am to 3pm
• Daylight Factor 4.5 %
• 16 different energy profiles developed
Modelling – Sustainable Engineering Solutions
fabric
• 8 fabric profiles analysed
• Optimum fabric upgrade selected
- roof 0.1w/m2 K
- floor 0.12w/m2 K
- external walls 0.15w/m2 K
- glazing 0.8w/m2 K
• Air infiltration 1 m3/hr/m2
• Reduced PSI for thermal bridging
technologies menu for SBEM
• 8 technology profiles analysed including mixes of
- lighting LED
- solar thermal
- photovoltaic
- chp
- heat pumps
- heat recovery ventilation options
early indicators (based on SBEM & pre cost optimum analysis)
• Option A 55 kWh/m2 * Not achievable using viable
with 10% renewables technologies
• Option B 50 kWh/m2 * Not achievable with no renewables
• Option C 40 kWh/m2 * Not achievablewith 20% renewables
* primary energy
modelling
• modelled in SBEM
• SBEM limitations for Irish schools
- SBEM hot water demand 1.5l/day/m2 = 2.7 l/day/person
actual Irish avg usage 0.33 l/day/person reduction of 88% of SBEM
- no provision for demand control heat recovery
- reduced occupancy profile of Irish schools not reflected in SBEM
Dynamic Thermal Modelling
• Best SBEM case profile was 66.5 Kwh/m2
• Used Dynamic thermal modelling (DTM) on same profile
allowing
- actual Irish avg hot water usage 0.33 l/day/person
- provision for demand control heat recovery
- reduced occupancy profile of Irish schools
DTM result 21 Kwh/m2
Next steps
• cost optimum analysis
• finalise design
• tender process
• to site this year
• other considerations
Thank you for listening,
www.energyineducation.ie.
Energy in Schools