Method and device for cool-drying

摘要

The present method is concerned with cool-drying gas containing water vapor. For this, the gas is guided through the secondary part of a heat exchanger (1) whose primary part is the evaporator (2) of a cooling circuit (3) which also contains a compressor (5) which is driven by an electric motor (4), a condenser (6), an expansion means (7) between the outlet of the condenser (6) and the inlet of the evaporator (2). The water condensed as a result of the cooling of the gas is separated and the gas is heated again. The above-mentioned cooling circuit (3) is thus controlled as a function of the load that the cooling capacity is adjusted without any ice being formed in the evaporator (2). The cooling circuit is controlled by adjusting the rotational speed of the motor (4).