Patent ID: 7805953
Filing Date: 2010-10-05
Classification: F24F,F25B

Abstract:
1. A method of transferring heat comprising: providing heat exchanger unit that is at least partially air cooled, the heat exchanger unit having an evaporator, condenser, compressor and a fan for forcing air over a heat exchange surface of the condenser; positioning a prefilter filter element in an air stream directed to the heat exchange surface of the condenser for capturing at least one of grease, debris and other contaminants that are not entrained within any liquid cooling fluid that would otherwise contact the heat exchange surface, the prefilter filter element being spaced apart from the heat exchange surface to define a plenum; allowing the filter element to capture the at least one of grease, debris and other contaminants prior to contact with the heat exchange surface of the condenser; providing a mist generator having at least one nozzle located between the prefilter filter element and the heat exchange surface of the condenser for directing a stream of fine mist or atomized liquid coolant into the air within the plenum between the prefilter filter element and the heat exchange surface of the condenser, the mist generator being coupled to a supply of liquid coolant; and controlling the degree of mist or atomized coolant generated by the mist generator with a controller.