Gbf08 kani mechanical systems


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Gbf08 kani mechanical systems

  1. 1. Green Mechanical Systems for a New Sustainable Reality Green Water The New Way To Heat and Cool Homes Mario Kani , P. Eng. Mario Kani, P.Eng Sustainable EDGE Ltd. 1
  2. 2. Oil discoveries form a “bell curve” over time. The curve is biased to the left because larger oil fields are easier to find. discoveries production Since 1982 the world has been consuming more oil than it has been discovering. Sustainable EDGE Ltd. 2
  3. 3. International Green Building Advancement  LEED  European Factor 10 codes  US 2030 Challenge  Net zero energy building  Living Building Challenge Sustainable EDGE Ltd. 3
  4. 4. The Move to Low Load Envelopes Reducing Loads High R-value assemblies High performance glazing Airtight construction Ventilation with heat recovery  Affords opportunity for green mechanical design Sustainable EDGE Ltd. 4
  5. 5. Efficient Heating and Cooling Inefficient Using fans to move air for thermal reasons More Efficient Pumping water for heating and cooling Most Effcient Convective thermal and ventilation transport Sustainable EDGE Ltd. 5
  6. 6. Radiant Heat Sustainable EDGE Ltd. 6
  7. 7. Recirculated Air Systems Pro Low cost Ease of cooling delivery Con High local airflow – comfortable? Compromises indoor air quality Noisy Sustainable EDGE Ltd. 7
  8. 8. Floor Radiant Heating Sustainable EDGE Ltd. 8
  9. 9. But how do you do air conditioning? But how do you do air conditioning Sustainable EDGE Ltd. 9
  10. 10. Ceiling Radiant Projects Aurora Institute Caledon Residence York University Residence Sustainable EDGE Ltd. 10
  11. 11. A Technology Set Prerequisite Controlled cooling loads through high performance envelope System Design 100% outdoor air ventilation – no recirculation Dehumidification of outdoor air – drier than room temperature Non-condensing ceiling radiant cooling  Typically single-family and multi-unit residential Sustainable EDGE Ltd. 11
  12. 12. Radiant In-Ceiling Heating and Cooling  Compatible with solar or geothermal energy  Lowest life cycle cost  Least maintenance  Energy efficient  Comfortable  Healthy air  Low noise  Invisibility Sustainable EDGE Ltd. 12
  13. 13. RAUpanel and Warmboard Sustainable EDGE Ltd. 13
  14. 14. Ceiling RAUpanel and Warmboard Sustainable EDGE Ltd. 14
  15. 15. Ceiling Radiant Installation Sustainable EDGE Ltd. 15
  16. 16. What about summer humidity? In an airtight envelope a central cold water coil on ventilation takes out outdoor humidity AT SOURCE Air is supplied to house DRIER than building air for take-up of indoor moisture Sustainable EDGE Ltd. 16
  17. 17. Benefits of Moderate Temperature Water-Based Heat/Cool Systems Complements low energy envelopes Comfortable Promotes healthy indoor air Minimal duct work Flexibility of thermal supply source Sustainable EDGE Ltd. 17
  18. 18. Displacement Ventilation Sustainable EDGE Ltd. 18
  19. 19. Laurentian School of Education Features Non-recirculation displacement ventilation Ventilation air quantities controlled by occupancy 100% outdoor air cooling system Innovative run-around fluid loop connected to ground source Exhaust fancoils with indirect evaporative cooling act as cooling towers Sustainable EDGE Ltd. 19
  20. 20. Sustainable EDGE Ltd. 20
  21. 21. Living Building Challenge Cambrian Sustainable Design Centre Architect s: Castellan James Partners Jason McLennan, Cascadia Sustainable EDGE Ltd. 21
  22. 22. Living Building Challenge Prerequisites (No points) 100% renewable energy supply Healthy indoor air quality Local, low embodied energy & recyclable materials Sustainable EDGE Ltd. 22
  23. 23. Sustainable EDGE Ltd. 23
  24. 24. Sustainable EDGE Ltd. 24
  25. 25. System Summary Low intensity, largely passive, low delivery energy Convective displacement ventilation - solar enhanced in summer. Active ventilation cooling and radiant heating & cooling available Ground heat exchanger for passive cooling and heat pump operation Heat pump coupled to the ground source, operates only as needed. Solar hot water for: - domestic hot water, - some winter heating and - enhanced summer stack effect Grid-connected solar electricity provides 110% of the modest annual electrical load Sustainable EDGE Ltd. 25
  26. 26. Green Mechanical Systems for a New Sustainable Reality Green Water The New Way To Heat and Cool Homes Mario Kani , P. Eng. Mario Kani, P.Eng Sustainable EDGE Ltd. 26