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Heat recovery in building envelopes.

Sherman M H, Walker I S, 2001
building envelope | heat recovery
Bibliographic info: in: USA, Atlanta, ASHRAE (American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc.), 2001, ISBN 1-883413-96-6, proceedings of a conference held Sheraton Sand Key Resort, Clearwater Beach, Florida, USA, 2-7 December 2001, CD ROM form
Languages: English

Postulates that figures for the energy load of a building affected by infiltration may be too high because the simple formula used does not account for heat recovery within the building envelope. In the study, sensible heat transfer was simulated with the used of CFD in typical envelopes. The results confirmed a possible overprediction of energy load up to 95% at low leakage rates. To predict the infiltration, a simplified physical model was developed and used for prediction based on the Peclet number of the flow and fraction of the building envelope active in infiltration heat recovery.


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