CONTROL METHOD OF A COMPLEX DESICCANT COLD AIR DRYING SYSTEM, FOR IMPROVING THE DEHUMIDIFICATION EFFICIENCY BY COMPOSITIVELY USING COLD AIR DRYING AND DESICCANT DRYING

摘要

PURPOSE: A control method of a complex desiccant cold air drying system is provided to keep temperature and humidity of a drying room by dewetting and pre-heating wet air of a drying room by selectively operating a cold air drying unit and a desiccant drying unit.;CONSTITUTION: A control method of a complex desiccant cold air drying system is composed of a drying room(R) receiving an object, a cold air drying unit(C), and a desiccant drying unit(D). The cold air drying unit is composed of a refrigerant compressor(101), an outdoor unit(106), an expansion valve(112), an evaporator(114), and a pre-heating condenser(110). The expansion valve expands the refrigerant which passes the outdoor unit. The evaporator cools and dehumidifies the air by heat-exchanging the wet air of the drying room and the refrigerant which passes the expansion valve. The pre-heating condenser preheats the air dehumidified in the evaporator. The desiccant drying unit dehumidifies and pre-heats the air of the drying room. The desiccant drying unit is composed of a rotor(304) and a regenerating heater(305) and heats the regenerating air at the high temperature.;COPYRIGHT KIPO 2010