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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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Presentation Transcript
slide5

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

we have systems to
Page 3.3We have Systems to:
  • Add heat
  • Remove heat
  • Ventilate
  • Maybe add or remove humidity
heating systems
Page 3.3Heating 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
slide9

Cooling coil

Heat recovery ventilator

Hot water heater

Furnace

Intake for furnace

slide11
Page 3.5

Floor furnaces

slide12
Page 3.5

Gas-fired wall furnace

cooling systems
Page 3.6Cooling 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
internal and solar gains
Page 3.8Internal 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
other factors
Page 3.8Other Factors
  • Water
    • drinking, cooking, washing, toilets
  • Cooking and storing food
  • Ventilating fans
  • Lighting
  • Computers, stereos, hair dryers, razors