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Maintaining livestock buildings in cold climates at a proper temperature represents one of the most energy-consuming operations in the agricultural production system. About 70-90% of the heat loss in these buildings is through ventilation. Ventilation is necessary to remove excess moisture, toxic gases and dust. Solar collectors that are capable of absorbing and storing low grade heat are effective in reducing heating requirements of livestock buildings. In a well-insulated hog barn, about 75% of the heat lost in cold weather is in the ventilating air (Jordan et al. 1979). A continuous winter ventilation rate of 7 L/sec per sow is recommended by Turnbull and Bird (1979). This is a minimum rate to keep moisture, toxic gases and dust down to safe levels. Heat used to warm ventilating air in a swine building to 10-20
concrete masonry wall to provide solar heat to a pig barn in saskatoon, canada
Sokhansanj, Shahab and Clifford Townsend 1984. CONCRETE MASONRY WALL TO PROVIDE SOLAR HEAT TO A PIG BARN IN SASKATOON, Canada. Canadian Agricultural Engineering 26(2):167-170.
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