TowerWise.ca Energy savings in Multi-suite residential buildings: Case Studies TEEAC Meeting...

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