energy in schools - cibseireland.org · energy in schools •our energy policy & design...
TRANSCRIPT
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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
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Energy in Schools
• our energy policy & design approach
• current research projects building towards
achieving new energy regulation targets
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Energy in Schools
• our energy policy & design approach
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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
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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
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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
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renewables in schools
• thermal solar
• photovoltaic
• wind
• biomass
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Energy in Schools
• our energy policy & design approach
• current research projects building towards
achieving new energy regulation targets
![Page 9: Energy in Schools - cibseireland.org · Energy in Schools •our energy policy & design approach •current research projects building towards achieving new energy regulation targets](https://reader030.vdocuments.us/reader030/viewer/2022041212/5dd14276d6be591ccb64fcb6/html5/thumbnails/9.jpg)
SEAI
Sustainability in the Built
Environment Award 2012
Colaiste Choilm Tullamore – Ireland’s
Lowest Energy Secondary School
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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
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• 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
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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)
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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
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NZEB new builds & BER uplift existing schools
The Downs N.S. Mullingar
&
St. Catherine's N.S. Aughrim
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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
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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.
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St. Catherine’s National
School, Aughrim.
The Downs
National School,
Mullingar.
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St. Catherine’s
National School,
Aughrim.
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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
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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
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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
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technologies menu for SBEM
• 8 technology profiles analysed including mixes of
- lighting LED
- solar thermal
- photovoltaic
- chp
- heat pumps
- heat recovery ventilation options
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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
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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
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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
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Next steps
• cost optimum analysis
• finalise design
• tender process
• to site this year
• other considerations
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Thank you for listening,
www.energyineducation.ie.
Energy in Schools