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TowerWise.caEnergy savings in Energy savings in Multi-suite Multi-suite residential buildings:residential buildings:Case StudiesCase Studies
TEEAC Meeting TEEAC Meeting November 3November 3rdrd , 2011 , 2011
OutlineOutline
New ConstructionNew ConstructionAppleby WoodsAppleby Woods
Combined Heat and PowerCombined Heat and PowerBloor StreetBloor Street
Appleby WoodsAppleby Woods
Design Objectives:Design Objectives:
Reduce operating costs Reduce operating costs through good building through good building design design
ConservationConservation
Renewable Energy SourcesRenewable Energy Sources
101 condominium suites101 condominium suites
Appleby WoodsAppleby Woods
Building EnvelopeBuilding Envelope
Insulated concrete formsInsulated concrete forms
Low window-to-wall ratioLow window-to-wall ratio
Appleby WoodsAppleby Woods
PV GenerationPV Generation
Grid-tied, roof-mounted Grid-tied, roof-mounted PV systemPV system
Stand-alone LED parking Stand-alone LED parking lot lighting unitslot lighting units
Appleby WoodsAppleby Woods
Ground Source Heat Ground Source Heat Pump SystemPump System
54 boreholes in the 54 boreholes in the parking lotparking lot
Hydronic loopHydronic loop
Suite-based water-to-air Suite-based water-to-air heat pump and fanheat pump and fan
Appleby WoodsAppleby Woods
Other featuresOther features
Dual flush toiletsDual flush toilets
Energy Star appliancesEnergy Star appliances
Low-e argon-filled Low-e argon-filled windowswindows
Motion-sensor parking Motion-sensor parking garage lighting in stallsgarage lighting in stalls
Appleby WoodsAppleby Woods
Bloor StreetBloor Street
Pre-Retrofit Situation:Pre-Retrofit Situation:
326 rental suites326 rental suites
Built in 1980Built in 1980
Needed to replace Needed to replace emergency power systememergency power system
Pilot CHP systemPilot CHP system
Bloor StreetBloor Street
Design and InstallationDesign and Installation
335kW electrical output335kW electrical output
1.4MMBTU thermal output1.4MMBTU thermal output
Housed in a 40ft container Housed in a 40ft container located on the rooflocated on the roof
Commissioned in July 2009Commissioned in July 2009
Bloor StreetBloor Street
Energy PerformanceEnergy Performance
Bloor StreetBloor Street
CHP System supplies about 40% of annual electrical CHP System supplies about 40% of annual electrical demand while producing waste heatdemand while producing waste heat
Lessons LearnedLessons Learned
New ConstructionNew Construction
Low energy features for Low energy features for lessless
Combined Heat and Combined Heat and PowerPower
Detailed planning processDetailed planning process
http://www.stlucieco.gov/planning/planning.htm
For More InformationFor More Information
Energy Retrofit Case Studies on the Energy Retrofit Case Studies on the TowerWise WebsiteTowerWise Website
http://towerwise.ca/case_studieshttp://towerwise.ca/case_studies
