Three reasons for the low temperature of the second-hand evaporator

The evaporator is generally composed of a preheater, a steam heat exchanger, a gas-liquid separator, a control system, a cleaning system, and a vacuum system. The main function is to use the liquid low-temperature refrigerant to easily evaporate at low pressure, transform into vapor and absorb the heat of the cooled medium to achieve the purpose of refrigeration. So, do you know what are the reasons for the low temperature of the second-hand evaporator? Today, I will give you a detailed introduction.

1. Frosting on the surface of the copper tube of the evaporator affects heat transfer, and the compressed air contains too much oil, and a layer of grease on the surface of the copper tube of the evaporator affects the heat transfer.

2. The compressor power is too large because the refrigeration system cannot supply enough refrigerant.

3. The refrigeration system pipeline has chronic leakage. If the evaporation temperature drops very low and the surface temperature of the heat exchange copper tube is below zero, the water vapor will condense into frost on the surface of the copper tube, which will bring many undesirable consequences to the refrigeration system . For example, "liquid compression" is generated, which blocks the gas circuit, which leads to a significant drop in the refrigeration coefficient of the compressor and an increase in energy consumption.

Therefore, when the compressed air with a large temperature content enters the refrigeration dryer to work, the evaporation temperature of the refrigerant in the tube should at least ensure that the surface temperature of the copper tube of the evaporator is above zero.

The above content is a detailed introduction about the reasons for the low temperature of the second-hand evaporator, and I hope it will be helpful to everyone. If you want to know more about second-hand equipment, you might as well pay attention to jiuku.