FIELD: agriculture.
SUBSTANCE: unit includes a supply fan (1) and an exhaust fan (6), a heat exchanger (4) made of polymer materials, a recirculation flap (8). The rotational axis of the recirculation flap is located on its upper edge. The flap and the supply fan are connected to the supply air temperature sensor (2), ensuring the regulation of the supply air flow in proportion to the outdoor temperature decrease, while the exhaust air flow rate is constant.
EFFECT: simplified design of heat recovery unit.
1 dwg
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