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Description: The two components of winter heat loss from an animal shelter are the conduction losses (through the structure) and the ventilation losses (heat required to bring the incoming ventilation air up to the room temperature). In typical modern farm buildings, the ventilation component is the larger of the two ventilation heat loss depends on the ventilation rate and the outside temperature. The livestock generate considerable quantities of heat, sufficient to maintain the desired room temperature with adequate ventilation when the outside temperature is moderate. But whenever the outside air temperature is too low, supplementary heat is required otherwise, even the minimum acceptable ventilation rate will cause the room temperature to fall. Conventional supplementary heat systems use electric heat, oil, propane or natural gas. One alternative is a heat recovery system, using a heat exchanger to extract heat from the exhaust air to preheat the inlet air. Theoretically, it is simple to design and construct a heat exchanger that, when clean, will recover the required heat. In practice, heat recovery systems have not been used very often, partly because heat exchanger performance falls off rapidly due to dust in typical farm conditions.

Keywords: the economics of heat recovery systems for animal shelters
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Citation: Larkin, B.S. and J.E. Turnbull 1979. THE ECONOMICS OF HEAT RECOVERY SYSTEMS FOR ANIMAL SHELTERS. Canadian Agricultural Engineering 21(1):53-60.
Volume: 21
Issue: 1
Pages 53 - 60
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Date: 1979
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Publication type: Journal
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Coverage: Canada
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