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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-1000
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2000
3000
4000
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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
De
grre
C
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
