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Deep Lake Water Cooling
- 1. 1 Spring 2003Spring 2003 AUnique 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 toTorontoEnvironmental 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
- 4. 4 Ontario Electricity ForecastOntarioElectricity Forecast 18,000 19,000 20,000 21,000 22,000 23,000 24,000 25,000 26,000 1990 1992 1994 1996 1998 2000 2002 Summer Peak Winter Peak Source:IMO
- 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
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- 8. 8 Deep Lake WaterCoolingDeep 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 …. Engineeredfor 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
- 10. 10 Intake PipingIntake Piping •83mdown •5 km out •70,000 gpm •40 C
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- 12. 12 The Wonders ofBodies 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
- 13. 13 Stratification conforms tobasin shapeStratification conforms to basin shape
- 14. 14 Going Deep …..GoingDeep …..
- 15. 15 The Launch ofa 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
- 16. 16 Oxford Properties GroupShuts Off Chillers at One University Avenue
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- 18. 18 Step 1 Enwave ChilledWater Plant MTCC South
- 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 TonCentrifugal PlacedSecond 4,700 Ton Centrifugal Placed October 2002October 2002
- 21. 21 Piping and Placementof VesselsPiping and Placement of Vessels
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- 23. 23 Energy Transfer Station-JSPSEnergy Transfer Station -JSPS
- 24. 24 Energy Transfer Station-JSPSEnergy Transfer Station -JSPS
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- 28. 28 Energy Transfer LoopEnergyTransfer Loop Off-loading theOff-loading the beastbeast, a, a 64-ton tunnelling64-ton tunnelling machinemachine
- 29. 29 Energy Transfer LoopEnergyTransfer Loop Going Down!Going Down!
- 30. 30 Energy Transfer LoopEnergyTransfer Loop
- 31. 31 Energy Transfer LoopTunnelingEnergy 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 LoopTunnelingEnergy Transfer Loop Tunneling Supply and Return pipesSupply and Return pipes to be lowered intoto be lowered into tunneltunnel
- 33. 33 Energy Transfer LoopTunnelingEnergy Transfer Loop Tunneling Supply and Return pipesSupply and Return pipes to be lowered intoto be lowered into tunneltunnel
- 34. 34 Energy Transfer LoopTunnelingEnergy Transfer Loop Tunneling Supply and Return pipesSupply and Return pipes to be lowered intoto be lowered into tunneltunnel
- 35. 35 Energy Transfer LoopTunnelingEnergy Transfer Loop Tunneling Supply and Return pipesSupply and Return pipes to be lowered intoto be lowered into tunneltunnel
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- 38. 38 • 15 kmHDPEPiping • 1.6 mdia.
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- 40. 40 • Stored onthe bay bottom • Floated and barged up to Toronto
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- 43. 43 Pipe DeploymentPipe Deployment PressurizedSections Floated into PositionPressurized Sections Floated into Position
- 44. 44 Pipe DeploymentPipe Deployment ShorelineDeploymentShoreline Deployment
- 45. 45 Pipe DeploymentPipe Deployment EstablishingLine of Sight for Off-shore PlacementEstablishing Line of Sight for Off-shore Placement
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- 48. 48 EnwaveEnwave Pipe Deployment -Barges PreparePipe Deployment - Barges Prepare
- 49. 49 Pipe DeploymentPipe Deployment PreparingTo “Sink”Preparing To “Sink”
- 50. 50 EnwaveEnwave Pipe Deployment -Positioning 1.5km SectionsPipe Deployment - Positioning 1.5km Sections
- 51. 51 Pipe DeploymentPipe Deployment Positioning1.5km SectionsPositioning 1.5km Sections
- 52. 52 Pipe DeploymentPipe Deployment PreparingTo “Sink”Preparing To “Sink”
- 53. 53 Pipe DeploymentPipe Deployment PreparingTo “Sink”Preparing To “Sink”
- 54. 54 Pipe DeploymentPipe Deployment PreparingTo “Sink”Preparing To “Sink”
- 55. 55 Three 5 km“legs” Comprise the Inlet SystemThree 5 km “legs” Comprise the Inlet System
- 56. 56 Deep Lake WaterCooling - A Tangible Step TowardsDeep Lake Water Cooling - A Tangible Step Towards Sustainability for TorontoSustainability for Toronto
Editor's Notes
- #7 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.
- #10 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.