What is the function of an evaporator coil?

- Mar 26, 2019-

The evaporator is used as a device for heating the refrigerant and absorbing heat to the outside. It mainly consists of a heating chamber and an evaporation chamber. The liquid refrigerant enters through the feeding port and simultaneously heats the steam to the heating tube bundle inside the heating chamber (the thinner tube in the figure below) Heating, the thicker tube in the middle of the heating chamber is not as large as the heating tube bundle area due to the heated area, so the refrigerant vaporized by the heating tube bundle rises into the evaporation chamber.


The liquid refrigerant in the central circulation pipe drops and continues to circulate. (The cross-sectional area of the central circulation pipe is about 40%-100% of the total cross-sectional area of the heating pipe bundle, which also directly affects the efficiency of the evaporator.) The application of the evaporator in the fresh air heat exchanger unit and the fan coil is mainly Provides cold water during the refrigeration process and provides heated refrigerant during the heating process.