What is the function of an air compressor?

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An air compressor is a device that converts the mechanical energy of a prime mover (usually an electric motor) into the pressure energy of gas, serving as a pressure-generating device for compressed air. Here is relevant information: 1. Compressed gas is used for refrigeration and gas separation. The gas is liquefied through compression, cooling, and expansion, and is used for artificial refrigeration. Such compressors are commonly referred to as ice machines or refrigerators. If the liquefied gas is a mixture, the components can be separated in a separation device to obtain various gases with qualified purity. For example, the separation of petroleum cracking gas involves compression first, followed by the separation of each component at different temperatures. 2. Compressed gas is used for synthesis and polymerization. In the chemical industry, increasing the pressure of certain gases through compressors facilitates synthesis and polymerization. Examples include the synthesis of ammonia from nitrogen and hydrogen, the synthesis of methanol from hydrogen and carbon dioxide, and the synthesis of urea from carbon dioxide and ammonia. Additionally, polyethylene is produced under high pressure.