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