Refrigeration technology for air conditioning belongs to the ordinary refrigeration range, mainly using liquid gasification refrigeration. (Mainly, the liquid gasification process is to absorb the latent heat, and the liquid pressure is different, the boiling point is also different, the lower the pressure, the lower the boiling point.) According to the different ways of heat transfer from high temperature objects to low temperature objects, it can be divided into: steam Compression refrigeration, absorption refrigeration.
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