PLENUM-AND-EXHAUST PLANT WITH PLATE-LIKE RECUPERATIVE HEAT RECOVERY UNIT Russian patent published in 2015 - IPC F24F7/06 F24F7/08 

FIELD: ventilation.

SUBSTANCE: proposed plant includes a housing, a plate-like recuperative heat recovery unit, suction and exhaust fans, a filter element, a heating element of outlet plenum air, a heating element for exhaust air, a bypass valve, inlet and outlet holes for plenum air, inlet and outlet holes for exhaust air, and a condensate drain tray. The bypass valve is located between an outlet zone of exhaust air from the plant and an inlet zone of exhaust air to the plant. A control unit is made in the form of a microprocessor and connected to the suction fan with possibility of its being disconnected by switching in a defrosting mode of a plate-like recuperative heat recovery unit for circulation of exhaust air through the plate-like recuperative heat recovery unit via a closed circuit. Possibility of exhaust air flow via the closed circuit through the plate-like recuperative heat recovery unit allows using the heating element of outlet plenum air of lower capacity.

EFFECT: increasing energy saving of the plant due to reduction of energy consumption at operation of the plant in the defrosting mode of the recuperative heat recovery unit; simple design at absence of imbalance of plenum and exhaust air in a room at operation of the plant in the defrosting mode of the recuperative heat recovery unit.

3 cl, 2 dwg