FIELD: machine building.
SUBSTANCE: each set of channel has an inlet and an outlet; at that, the inlet and the outlet of the first set of channels are connected to a room so that they form the first recirculating circuit, and the inlet and the outlet of the second set of channels are connected to the room environment so that they form the second recirculating circuit. Heat exchanger is a plate-type heat exchanger. In addition, the plant includes a mixing valve intended to provide the heated air with possibility of flowing from the outlet of the second set of channels through the mixing valve to the inlet of the second set of channels.
EFFECT: preventing ice formation inside the heat exchanger when outside air has the temperature below freezing point; possible temperature control using smaller amount of energy.
15 cl, 5 dwg
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