With the rapid progress of society, refrigerated display cabinets have been widely used in our daily lives. However, when we use refrigerated display cabinets for a long time, we will find that the temperature changes. So, what is the reason? Next, let's introduce ourselves to you.

The condensation temperature water is the temperature and condensation pressure k of a high-temperature and high-pressure gas refrigerant that cools and condenses into a liquid under a certain pressure in the condenser. The condensation pressure can be estimated from exhaust pressure 2. In order to overcome the pressure drop, the exhaust force is always higher than the condensation pressure, which is generally equivalent to a saturation condensation temperature difference of 0.5 ° C

The condensation temperature depends on the temperature of the cooling air, which is generally 8-12 ° C higher than the ambient temperature

The condensation temperature is determined through comprehensive economic and technical analysis. If the condensation temperature is too high, the condensation pressure also increases accordingly. The compression ratio pk/p0 of the refrigeration display phase increases, the axial work increases, the peak of the gas transmission coefficient is low, the actual exhaust volume decreases sharply, and the refrigeration capacity also decreases; In addition, an increase in condensation pressure will cause an increase in exhaust pressure and exhaust temperature, and an excessively high exhaust temperature will make the operation of the compressor extremely unsafe and prone to accidents. The condensation temperature is generally too low due to the following reasons:

1. The refrigeration system of the refrigerated display cabinet lacks refrigerant.

2. The cooling water temperature is too low and the water volume is too large.

3. The compressor discharge valve of the refrigerated display cabinet is leaking or the high and low pressure compartments are punctured.

4. Compressor suction pressure too low

There are generally the following reasons for high condensation temperature:

1. There is air in the system.

2. The condensation effect is not good. The air volume is too low, the radiator is too dirty, and the ambient temperature is too high

3. There is too much refrigerant in the refrigerated display cabinet.

4. The condenser discharge pipeline of the refrigerated display cabinet is not smooth

5. The refrigerant is impure.