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House as a system

Steps to Healthier Homes. House as a system. Learning Objective. What’s a house?. Homes Shelter Us From:. Marquette. Anchorage. Billings. Saint Paul. Bangor. Cleveland. Seattle. Boston. Salt Lake. DC. Denver. Nashville. San Francisco. Saint Louis. Phoenix. Atlanta. Los Angeles.

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House as a system

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  1. Steps to Healthier Homes House as a system

  2. Page 3.1 Learning Objective

  3. Page 3.1 What’s a house?

  4. Page 3.2 Homes Shelter Us From:

  5. Marquette Anchorage Billings Saint Paul Bangor Cleveland Seattle Boston Salt Lake DC Denver Nashville San Francisco Saint Louis Phoenix Atlanta Los Angeles Miami New Orleans Honolulu Houston Saint John Tulsa Wichita

  6. Page 3.2 Most of Us are Comfortable:

  7. Page 3.3 We have Systems to: • Add heat • Remove heat • Ventilate • Maybe add or remove humidity

  8. Page 3.3 Heating Systems • Fuel – gas, oil, wood, electric • Distribution • Hot water, steam, warm air, space heaters • Radiators, baseboard, ducts • Radiant floors and ceilings • Chimneys, sealed combustion, fan powered • Temperature Controls

  9. Cooling coil Heat recovery ventilator Hot water heater Furnace Intake for furnace

  10. Page 3.4 Octopus heating system

  11. Page 3.5 Floor furnaces

  12. Page 3.5 Gas-fired wall furnace

  13. Page 3.6 Heat Exchangers

  14. Page 3.6 Cooling Systems • Fuel – electric • Windows, fans and shades • Distribution • Central air • Through the wall • Duct-less splits • Dehumidification • Air conditioners/part-load • Dehumidifiers • Control – thermostat, humidity

  15. Page 3.7

  16. Page 3.7

  17. Page 3.8 Internal and solar gains: Good when cold out; bad when hot out • Heat from people • Heat from appliances • Solar through windows • Average US house • 23% of heating is done by these gains • 59% of cooling is caused by these gains

  18. Page 3.8 Other Factors • Water • drinking, cooking, washing, toilets • Cooking and storing food • Ventilating fans • Lighting • Computers, stereos, hair dryers, razors

  19. Page 3.8 Learning Objective

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