How to Perform a Heat-Loss Calculation — Part 2

greenbuildingadvisor.com 27 Apr '12, 8am

How to Perform a Heat-Loss Calculation — Part 2

Since no one knows what the “natural” air changes per hour on a cold winter night will be for any particular house design, any ACH(nat) figure is no more than a guess. The simple one-dimensional heat flow equation used by this calculation method is a gross simplification of the way heat flows actually occur in a three-dimensional building. This heat loss calculation method does not account for thermal mass Heavy, high-heat-capacity material that can absorb and store a significant amount of heat; used in passive solar heating to keep the house warm at night. effects. This heat loss calculation method does not account for losses due to mechanical ventilation. This heat loss calculation method ignores internal gains from occupants, pets, refrigerators, lighting, and electronic appliances. Large errors can be introduced when a designer is uncertain of a building assembly’s U-f...

Full article: http://www.greenbuildingadvisor.com/blogs/dept/musings/ho...

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@PiedmontHousing » 30 Apr '12, 3pm
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@GreenBoardCoop » 27 Apr '12, 10am
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@GBAdvisor » 27 Apr '12, 9am
Energy Nerd: How to Perform a Heat-Loss Calculation — Part 2 [link]
@DallasRealEst8 » 27 Apr '12, 8am
How to Perform a Heat-Loss Calculation — Part 2: Subtitle: Simple ... [link]
@greeneconpost » 27 Apr '12, 8am
How to Perform a Heat-Loss Calculation — Part 2 [link]
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How to Perform a Heat-Loss Calculation — Part 2 ... [link]
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How to Perform a Heat-Loss Calculation — Part 2 [link]
@LBMJournal » 27 Apr '12, 2pm
RT @GBAdvisor: Energy Nerd: How to Perform a Heat-Loss Calculation — Part 2 [link]