AIR CONDITIONING APPARATUS UTILIZING LIQUID AIR

PROBLEM TO BE SOLVED: To provide a cooling apparatus that is small-sized and has greater cooling capability. SOLUTION: Liquid air at a cryogenic, temperature of -190 deg.C manufactured by cooling air with a liquid air manufacturing apparatus 1 is stored in a liquid air tank 3. The liquid air stored in the liquid air tank is fed with pressure toward a heat exchanger 6 with a pump 15, and the liquid air sent to the heat exchanger 6 passes through the interior of a refrigerant passage 6a of the heat exchanger as a refrigerant. Air in a space to be cooled is sent to the heat exchanger with an air fan 7 such that the air strikes an outer surface of the refrigerant passage for circulation, where the refrigerant and the air are heat exchanged, and the air is cooled while the refrigerant absorbs heat of the air to raise temperature. The liquid air passing through the heat exchanger is vaporized and is released into the space to be cooled from a blowoff outlet 10 in a tip end of a third pipe 9 as fresh cold air.