What is the influence of the constant temperature and humidity box refrigeration system evaporation temperature is too low

Recently, some netizens asked about the main factors of the low evaporating temperature of the constant temperature and humidity chamber refrigeration system. Today, Xiaobian compiled the following contents through online access to the information and the usual maintenance experience. Friends in need quickly hurry to collect it!

1) The refrigerant in the constant temperature and humidity chamber refrigeration system is insufficient.

2) The throttle valve is too small to open, the amount of refrigerant flowing into the evaporator is insufficient, and most of the refrigerant vapor in the evaporator is overheated, the cooling capacity is decreased, and the evaporation pressure is also decreased.

3) The constant temperature and humidity chamber refrigeration system has dirt blockage, especially in the Freon system. Because the dirt will block the drying filter and the thin pipeline, the system contains moisture, which will cause the expansion valve to generate ice blockage.

4) The solenoid valve does not work or does not open the relevant valve.

5) The surface of the direct evaporative cooler is frosted or frozen, which increases the heat transfer resistance, affects the heat transfer effect, and gradually reduces the evaporation temperature, thereby lowering the evaporation pressure.

6) The evaporator area does not match the cooling capacity of the compressor, ie the evaporation area of ​​the evaporator is too small.

7) The cooling water of the water cooling system is excessive and the refrigerant amount is too small. In this regard, it is necessary to adjust the flow rate of the cooling water and the refrigerant.

8) The load adjustment switch is not open enough, and the refrigeration capacity of the refrigeration equipment is greater than the required heat load.

When the evaporating temperature of the constant temperature and humidity chamber is too low, the cause should be identified and the unit operation should be adjusted to a reasonable state.

What is the influence of the constant temperature and humidity box refrigeration system evaporation temperature is too low

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