Creating Sustainable Buildings and Communities. Robert Smith

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Creating Sustainable Buildings and

Communities

February 16th, 2012

Robert Smith, Director, Innovation

The Minto Group



Presentation Outline

2

• Who we are and what we do

• Strategies and Processes

• From single buildings to community initiatives

• Lessons learned



Who We Are

http://www.minto.com/



From Vision to Strategic Planning

• Create a vision

• Develop a strategic plan

– Achievable targets

– Timelines

– Implementation – Commissioning

– Measurement and Verification

• Create programs

• Attain partnerships/alliances

– Funding agencies

– Utilities and government

4



Integrated Design Process

• Series of workshops and design meetings

– Industry experts and utilities

– Government agencies

• Target energy efficiency of the homes/buildings

– Building envelope – Highly efficient appliances and technologies

• Mechanical

• Lighting

• Alternate forms of energy

– Renewable technologies

– Community energy systems

5



Design Parameters

• Net 45 performance

• Build tight

• Double wall construction

• R-44 exterior walls

• R-60 roof/ceiling

• R-40 basement walls

• R-15 under slab

• Target 0.5 ACH



Inspiration – A Zero Energy Home



Double Wall Construction



Spray Foam for Superior Performance



Exterior Insulation

10



Air Tightness



Measurement and Verification



Natural Ventilation

• Operable windows

• Vertical and horizontal

ventilation

• No cooling requirement

• Thermal mass

• Performance exceeds

energy model!!

13



Technologies



Finished Product



Zero Energy Condominium



Determining Demand – Energy Use and Load Profiles

Baseline Model - Code

• Ontario Building Codeconstruction, HVAC systems

and lighting

• Typical process loads andoccupancy

Design Model - LEED

• “Best practice” construction,HVAC systems and lighting

• Same process loads and

occupancy as Baseline

• 10-25% improvement overbaseline

Load Model

• Same as Design

• Calculate hourly demands bysetting heating and cooling

plant efficiencies to 100%

• Assume identical pumpingenergy to Design model

1 2 3

Energy Use Demand Profile



Zero Energy Building Technologies

Specification Enhanced Technology Building (Working towards Net Zero) Roof insulation R-31 Rigid + R-10 Spray Foam Wall insulation R-33 Spray Foam Garage ceiling insulation R-50 Spray Foam Ventilation Heat Recovery Make Up Air Unit 98% AFUE hydronic heating coil Air Conditioning SEER 16

Showers 1.5 GPM flow Occupant controls oAll off switch

oGreen Plugs oMotion controlled HVAC

In Suite Lighting Compact Fluorescent Common Area Lighting

Motion Controlled LED

Sub metering oElectricity

oHot and cold water Renewable Electricity o42kW Crystalline PV rooftop array Windows Triple Pane, Low-e, Argon Fill on North walls, Double glaze on south facing

walls





District Energy



District Energy



CHP Plant Fuel Options

•

Biomass / Gasification•Liquid Bio-fuels

•Biogas



Lessons Learned

• Quality control

• It’s not easy the first

time

• The benefits out way the

challenges• Engage the experts

• Measure, then measure

again!

• We would like to help

Creating Sustainable Buildings and Communities. Robert Smith

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