The four major components of the refrigeration system are compressor, evaporator, condenser and throttling device. Among them, the type and characteristics of the compressor, which is the heart of the air conditioning system, are more well-known than the other three components. The evaporator is another key component. The function of the evaporator is to absorb the heat of the brine through evaporation (boiling), so as to achieve the purpose. There are many forms of evaporators, which can be divided into evaporators for cooling liquid and evaporators for cooling air according to the different refrigerants. The following mainly introduces the working principle and structural characteristics of several common evaporators.
The evaporator is one of the four major components of the refrigeration unit, which is a heat exchanger. The working principle of the refrigeration unit is to use the evaporation method to evaporate the refrigerant (boiling), absorb the heat of the refrigerant, and achieve the purpose of refrigeration. The evaporator is the cooling capacity output device of the refrigeration unit. The evaporator is mainly composed of a heating chamber and an evaporation chamber. The heating chamber mainly provides the heat required for evaporation to the liquid to promote the boiling and vaporization of the liquid. The effect is separated from the steam.
The evaporator is a heat exchanger that allows the low-temperature liquid refrigerant to exchange heat with the medium that needs to be refrigerated. The types of evaporators are: flooded evaporator, dry evaporator, circulation evaporator, spray evaporator. Due to the different functions of refrigeration units, the types of evaporators used are also different.