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Objectives:

Considerations for Implementing Combined Heat and Power in Highrise Residential Buildings: Lessons Learned February 4th 2010. Accelerating the adoption of green building technologies and contributing to the transformation of the built environment. Objectives:

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Objectives:

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  1. Considerations for Implementing Combined Heat and Power in Highrise Residential Buildings: Lessons LearnedFebruary 4th 2010

  2. Accelerating the adoption of green building technologies and contributing to the transformation of the built environment. • Objectives: • Evaluate new green building technologies & equipment through in-situ testing and monitoring in new and existing high rise buildings; • Leverage knowledge and experience of leading developer and building owner(s) to strengthen the cleantech product development and commercialization value chain.

  3. What is Combined Heat & Power Sewage Treatment • CHP, or Cogeneration, utilitizes the waste heat from electricity generation to produce simultaneous hot water (thermal energy) • Primary types of equipment: • Microturbines • Reciprocating Engines • Fuel Choices: • Natural Gas (common) • Biofuels (eventually) Source: www.powerecosystems.com

  4. Equipment Choices Sewage Treatment

  5. Potential Benefits: CHP + DG Sewage Treatment • Energy Efficiency and Potential Emissions Reductions • Reduction in building electricity demand • Uninterrupted emergency power generation • Distributed generation: • Enables self reliance & fuel switching flexibility • Reduces efficiency losses from distribution networks • Reduces investment requirements in upstream capacity (smaller centralized power plants)

  6. Tridel’s Combined Heat & Power Feasibility Studies Sewage Treatment • Single Condominium Building • Tridel, TAF, TRCA, OPA, Enbridge, Provident Energy Management 2. Tandem Towers in New Development Complex • Tridel, Enbridge, Private 3rd Party Utility Solaris I & II @ Metrogate 1.2 MW CHP Grand Triomphe II 540 KW CHP

  7. Design Considerations Size system to deliver less than base Power load • To optimize system performance, thermal storage is necessary on larger systems • Then • THen But you will still have too much heat in summer • To optimize system performance, thermal storage is necessary on larger systems • Then • THen Typical Time of Use for power in MURBs

  8. Key Factors in Designing a System Sewage Treatment • Scale • Do not exceed the building’s base load. Stay behind the meter. Too complicated to grid connect. • Do not exceed the summer thermal (DHW) load. You’ll be dumping hot water and eroding the environmental benefits. • Size for emergency back-up generator • (Check economics on smaller systems) • Operating Schedule • Plan to run the equipment during Peak Periods mainly - and maybe Mid-Peak. • Do not operate during off-peak, or you’ll erode environmental benefits. • System will mostly likely not be thermal load following for economic reasons. • Thermal Storage • Probably required on residential installations • Adds cost but preserves environmental benefit and system efficiency

  9. Key Factors in Designing a System Sewage Treatment 4. Location • Installing near the ground may require special exhaust venting • Installing on the roof may require additional sound and vibration attenuation 5. Cost • Approximately $1000/kw for equipment • $2500/kw installed 6. Maintenance • Use a reliable operator. These systems can be too complex for a condo board. 7. Design-Build/Own-Operate • A third party can design-build-own-operate, but be mindful of above considerations

  10. Illustrative Economics of a 540 KW CHP in a New Building Sewage Treatment Assuming Time of Use Rates apply Operating Schedule: 8 hrs/day @ Peak + 6 hrs/day @ Mid (7 months) = 3,036 hrs/year Avoided Costs from Operation: $277,000/yr Operating Costs (at $0.38/m3): $186,000/yr Operating Margin (before interest): $91,000 Install Costs: $1,361,000 - $250,000 (Generator) - $86,400 (Incentive*) - $X (boiler reduction) = $1,024,600 Sensitivity • $/kwh + 20% improves Operating Margin to $131,500 • + $/m3 + 20% drops Operating Margin to $80,500

  11. Enabling Conditions Constraints Sewage Treatment • Equipment start-up times must meet other code requirements • Install costs higher for retrofit • NG price volatility risk • Existing regulated price plan • Non-alignment in summer • No viable Clean Energy Standard Offer for NG • Availability & Price • CSA-282 rule change for emergency back-up systems • Retiring old appliances • Low input fuel prices • Time of Use Rates • Coincident Power/Thermal demand • Provincial price support mechanism • FIT for Biogas ($ $.16/kwh)

  12. THANK YOUJamie Jamesjjames@350capital.com

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