Aircraft air conditioning unit

free cooling

The food and beverages in aircraft galleys, the cockpit area, and the small compartments full of electronic equipment require cooling. For this purpose Diehl Aviation offers Air Cooling Units comprising the following components: - a variable speed fan for pumping approx. 120 l/sec cooled air into a closed loop through the trolley compartment - a heat exchanger – to transfer the heat gained by the air to the liquid coolant loop of the aircraft. - a heater – saving the heat exchanger from freezing - a coolant control valve for regulation of coolant flow and a 115 VAC variable frequency The electronic controller adjusts both the air-out temperature as well as the air-in temperature of the ACU by regulating both the coolant flow and the air flow.