1. 1
Spring 2003Spring 2003
A Unique Engineered SolutionA Unique Engineered Solution
enenwavewave
Deep Lake Water CoolingDeep Lake Water Cooling
A Photo Journey Of The Construction ofA Photo Journey Of The Construction of
The World’s LargestThe World’s Largest
Lake-Source Cooling SystemLake-Source Cooling System
2. 2
DLWC SpecificationsDLWC Specifications
• 62,000+ tons m echanical capacity62,000+ tons m echanical capacity
• 75,000 tons with diversified load75,000 tons with diversified load
• E quivalent to ~ 65 M WE quivalent to ~ 65 M W
• D isplacing 40 m illion+ kW h/yrD isplacing 40 m illion+ kW h/yr
• ~ 3.2 m illion sq.ft. or 100~ 3.2 m illion sq.ft. or 100
buildings building coolingbuildings building cooling
3. 3
Environmental Benefits to TorontoEnvironmental Benefits to Toronto
• 80,000+ tons G H G displaced80,000+ tons G H G displaced
annuallyannually
– C 02
– SO X
– N O X
– Particulate
• T aking 15,000 vehicles off the roadT aking 15,000 vehicles off the road
– A line of cars from T .O . to G ravenhurst
• 40,000+ kg of C F C s displaced40,000+ kg of C F C s displaced
• C onstruction started June 2002C onstruction started June 2002
5. 5
System Overview – Deep Lake CoolingSystem Overview – Deep Lake Cooling
• $175 M illion asset$175 M illion asset
• Joint infrastructureJoint infrastructure
• R eplacing C ity ofR eplacing C ity of
T oronto drinkingT oronto drinking
water intake systemwater intake system
• B orrowing theB orrowing the
W aterW ater
• E nergy T ransferE nergy T ransfer
StationStation
• D istribution L oopD istribution L oop
• C onstructionC onstruction
started:started:
• June 2002June 2002
• C om pletion:C om pletion:
• Sum m er 2004
8. 8
Deep Lake Water CoolingDeep Lake Water Cooling
Service TerritoryService Territory
• Evaluate and IdentifyEvaluate and Identify
prospectsprospects
•Assist in analysis and costAssist in analysis and cost
comparisonscomparisons
• Develop specificationsDevelop specifications
• Develop projectDevelop project
An Ideal Engineered SolutionAn Ideal Engineered Solution
For Many DowntownFor Many Downtown
buildingsbuildings
Enwave can help:Enwave can help:
9. 9
Redundancy …. Engineered for 100% UptimeRedundancy …. Engineered for 100% Uptime
•Dual Feeders and Xformation to IFP and JSPSDual Feeders and Xformation to IFP and JSPS
•Full back-up power to circulating pumpsFull back-up power to circulating pumps
•Steam drive/absorption Chiller Plant - 12,400 TonsSteam drive/absorption Chiller Plant - 12,400 Tons
•3 Water Intake Pipes3 Water Intake Pipes
•Back-up pipesBack-up pipes
•Alternate water supply from eastern plantAlternate water supply from eastern plant
•N+1 redundancy – Firm ratingN+1 redundancy – Firm rating
•PumpsPumps
•HXHX
•Mechanical PlantMechanical Plant
•22oo
distribution loop bored through rock belowdistribution loop bored through rock below
other utility layersother utility layers
12. 12
The Wonders of Bodies of WaterThe Wonders of Bodies of Water
The Greek’s have a word for it …..The Greek’s have a word for it …..
• EpilimnionEpilimnion
– Most sun radiation
– Most living things
• MetalimnionMetalimnion
– (Thermacline)
– Density/temperature
• HypolimnionHypolimnion
– Most dense
– No convection
– Constantly regenerating
15. 15
The Launch of a Canadian Venture …The Launch of a Canadian Venture …
WithWith International StatureInternational Stature
Worldwide
Attention:
• ASHRAE
• I.D.E.A.
• China
• US
• Greece
• Denmark
• Spain
““This technology…This technology…
is going to be an exampleis going to be an example
to the rest of the worldto the rest of the world””
Robert F. Kennedy Jr.Robert F. Kennedy Jr.
Toronto, June 20, 2002Toronto, June 20, 2002
19. 19
Chilled Water Plant - MTCCChilled Water Plant - MTCC
• Design Intent: Decouple from electricityDesign Intent: Decouple from electricity
• Commissioned in 1997Commissioned in 1997
• 2 x 4700 Ton Centrifugal Chiller (Steam2 x 4700 Ton Centrifugal Chiller (Steam
Driven)Driven)
• 2 X 1500 Steam Absorption Chillers2 X 1500 Steam Absorption Chillers
• 12,400 Tr Capacity12,400 Tr Capacity
• Rated Firm at 7,700 tonsRated Firm at 7,700 tons
20. 20
Second 4,700 Ton Centrifugal PlacedSecond 4,700 Ton Centrifugal Placed
October 2002October 2002
31. 31
Energy Transfer Loop TunnelingEnergy Transfer Loop Tunneling
Tunneling at a rate of 10-20Tunneling at a rate of 10-20
meters/daymeters/day
• Rock is cut and is paddledRock is cut and is paddled
back to buckets for depositback to buckets for deposit
into small train carsinto small train cars
• Tunnel Approximately 270mTunnel Approximately 270m
in lengthin length
32. 32
Energy Transfer Loop TunnelingEnergy Transfer Loop Tunneling
Supply and Return pipesSupply and Return pipes
to be lowered intoto be lowered into
tunneltunnel
33. 33
Energy Transfer Loop TunnelingEnergy Transfer Loop Tunneling
Supply and Return pipesSupply and Return pipes
to be lowered intoto be lowered into
tunneltunnel
34. 34
Energy Transfer Loop TunnelingEnergy Transfer Loop Tunneling
Supply and Return pipesSupply and Return pipes
to be lowered intoto be lowered into
tunneltunnel
35. 35
Energy Transfer Loop TunnelingEnergy Transfer Loop Tunneling
Supply and Return pipesSupply and Return pipes
to be lowered intoto be lowered into
tunneltunnel
55. 55
Three 5 km “legs” Comprise the Inlet SystemThree 5 km “legs” Comprise the Inlet System
56. 56
Deep Lake Water Cooling - A Tangible Step TowardsDeep Lake Water Cooling - A Tangible Step Towards
Sustainability for TorontoSustainability for Toronto
Notes de l'éditeur
The main feature of DLE is that a new intake tunnel will provide cooling for Enwave, as well as supply raw water to one of the City’s main water treatment plants.
DLE is a partnership with the City of Toronto where two systems - potable water supply and chilled water distribution system - will operate in unison.
Lake water will enter the new intake and be processed into potable water to supply the City’s drinking water system.
At the City’s transfer station, water will be diverted to Enwave’s plant where it will run through heat exchangers to transfer energy from the cold potable water to Enwave’s chilled water loop.
The chilled water will subsequently be passed through the mechanical equipment connected in series with the heat exchangers to further sub-cool the water. Pumps will subsequently distribute the Enwave chilled water to customers where the “cold energy” will be transferred to their buildings’ cooling water.
The main feature of DLE is that a new intake tunnel will provide cooling for Enwave, as well as supply raw water to one of the City’s main water treatment plants.
DLE is a partnership with the City of Toronto where two systems - potable water supply and chilled water distribution system - will operate in unison.
Lake water will enter the new intake and be processed into potable water to supply the City’s drinking water system.
At the City’s transfer station, water will be diverted to Enwave’s plant where it will run through heat exchangers to transfer energy from the cold potable water to Enwave’s chilled water loop.
The chilled water will subsequently be passed through the mechanical equipment connected in series with the heat exchangers to further sub-cool the water. Pumps will subsequently distribute the Enwave chilled water to customers where the “cold energy” will be transferred to their buildings’ cooling water.