Principle of Mechanical Compression Refrigeration
Principle of refrigeration
The phenomenon of absorption and release of heat generated by a phase change of a refrigerant having a very low boiling point, by means of suction compression of a compressor, exothermic condensation of a condenser, throttling and depressurization of a throttle valve, and endothermic vaporization of an evaporator ，the process of continuous cycling achieves the purpose of temperature drop.
The compression refrigeration system is mainly composed of a compressor, a condenser, an expansion valve and an evaporator. The refrigerant boils at the pressure temperature below the temperature of the object or fluid being cooled. The compressor continuously draws vapor from the evaporator and compresses it to the condensing pressure, then sends it to the condenser, and condenses into a liquid under pressure, and the heat released by the refrigerant cooling and condensation is transferred to the cooling medium. (usually water or air), the condensing temperature corresponding to the condensing pressure must be higher than the temperature of the cooling medium, and the cooled liquid enters the evaporator through an expansion valve or other throttling assembly.