Air conditioning method for chemical test chamber

摘要

The second coolant fluid refrigerant is evaporated in the cooling unit (16), and prior to entry into that unit has a gaseous coolant mixed with it. The refrigerant coming from the cooling unit is fed successively to a compressor, a condenser, and an expansion valve. A part of the hot gaseous refrigerant coming from the compressor is mixed with the refrigerant flow, constantly regulated, coming from the condenser and pref. after the expansion valve. The test appts. works in a room (10) which is air-conditionable with a heat exchanger (16), a fan (18), and a water plant (26) in the room floor, and the refrigerant fed to the heat exchanger flows in a circuit comprising a compressor, a condenser, a refrigerant reservoir, and a relief valve.