Re-Energizing Our Cities: From District to Specific - Integral Group

October 03, 2013

Re-Energizing our Cities

From district to specific

Dave Ramslie & Gerry Faubert

Integral Group

A Point in History…

High Performance Urban Buildings

Energy and GHG savings at scale

Fuel switch on existing systems = 35-85,000 t

New brownfield DE systems = 7-15,000 t

Near net-zero building = 200t

Deep green retrofit = 50-75t

LEED Gold Building = 30-50t

Typical retrofit = 30-40t

Retro-commissioning = 20-30t

Going District Scale

How do we:

Build new cost effective systems?

Have competitive utility rates?

Connect existing loads?

With natural gas at an all time low?

Use Existing Infrastructure:

Conversion of DFPS to Ambient DES

Stage 1 – B&H Site Connected to ATDFPS

Convert DFPS into Ambient Temp DES or “ATDFPS”

Build Central Plant on adjacent site

Connect B&H to ATDFPS

B&H peak heating demand 2.5MW

ATDFPS intrinsic geo-exchange heating capacity 1.6MW with heat pump

Supplemental heating by condensing Nat. Gas boilers

ATDFPS

“Ambient Loop” District Energy Concept

DFPS converted into “Ambient Temperature” (5 -15C) district energy system serving majority of Downtown

New Energy Centre pump station converts existing stagnant DFPS loop into thermal distribution system

Combined with distributed building level heat pump H&C plants

Combined with distributed “low-grade” thermal energy sources

DFPS/Ambient Loop DES Concept Schematic

DFPS / AMBIENT LOOP DES 600mm DIAMETER

Ambient Loop Demand & Temperature Profile

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Fri,01/Jan

Tue,26/Jan

Sat,20/Feb

Wed,17/Mar

Sun,11/Apr

Thu,06/Ma

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Mon,31/Ma

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Fri,25/Jun

Tue,20/Jul

Sat,14/Aug

Wed,08/Sep

Sun,03/Oct

Thu,28/Oct

Mon,22/Nov

Fri,17/Dec

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Ambient Loop Demand & Temperature Profile at Phase 1

Net heat extraction/ heat rejection from/ into Ambient Loop at Phase 1

Ambient Loop temperature profile with 1.5 MW low-grade heat source SHR @ 8C dT, 45 l/s or Ocean Loop @ 4C dT, 90 l/s

Performance Engineering – Canmet Lab@ MIP

Innovative Partnership

Hybrid DES

Geoexchange

Solar Thermal & PV

Making These Systems Work

District Energy

Load Certainty

Load Density

Load Diversity

Patient Capital

Supportive Policy

Supportive Civic

Government

Developer “Buy-In”

Policy Considerations

Mandatory Connection Areas?

“DE Ready” requirements

DE feasibility requirements

DE “Franchise Areas”

Low Carbon Bridging Strategies

Green Building Policy

SEFC Neighbourhood Energy Utility

Mandatory Connection

Green Building Policy Amendments

The River District

Low Carbon Bridging Strategies

Cambie Street Corridor

“DE Ready” requirements

DE feasibility requirements

DE “Franchise Areas”

Low Carbon Bridging Strategies

Central Heat Biomass Conversion

Green Building Policy Amendments

Mandatory Connection requirements

October 03, 2013

Thank you!

dramslie@integral-group.ca

gfaubert@integral-group.ca