FIELD: separation.
SUBSTANCE: method for cool drying gas, using a heat exchanger whose primary section forms the evaporator of a cooling circuit with a compressor, an expansion valve and a bypass pipe across the compressor with a hot gas bypass valve, whereby the method uses a formula that reflects the link between the state of the expansion valve and hot gas bypass valve, whereby on the basis of this formula: either the state of the expansion valve is adjusted as a function of the state of the hot gas bypass valve; or adjusting the state of the hot gas bypass valve as a function of the state of the expansion valve or vice versa; or the states of both valves are controlled with respect to one another.
EFFECT: invention is intended for cool drying a gas, whereby water vapour in the gas is condensed by guiding the gas through the secondary section of a heat exchanger.
7 cl, 3 dwg
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