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An air compressor is a device that converts power (using an electric motor, diesel or gasoline engine, etc.) into potential energy stored in pressurized air (i.e., compressed air). By one of several methods, an air compressor forces more and more air into a storage tank, increasing the pressure. When tank pressure reaches its upper limit the air compressor shuts off. The compressed air, then, is held in the tank until called into use. The energy contained in the compressed air can be used for a variety of applications, utilizing the kinetic energy of the air as it is released and the tank depressurizes. When tank pressure reaches its lower limit, the air compressor turns on again and re-pressurizes the tank. There are numerous methods of air compression, divided into either positive-displacement or negative-displacement types.〔(Compressor types: rotary screw, reciprocating, and vane compressors )〕 ==According to the pressure delivered== # Low-pressure air compressors (LPACs), which have a discharge pressure of 150 psi or less # Medium-pressure compressors, which have a discharge pressure of 151 psi to 1,000 psi # High-pressure air compressors (HPACs), which have a discharge pressure above 1,000 psi 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Air compressor」の詳細全文を読む スポンサード リンク
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