Low pressure in industrial chillers should mean that the evaporation pressure is too low. 1. The return water temperature is low, which causes the guide vane opening to decrease rapidly, which causes the suction pressure to drop and the low pressure is too low. 2. The blockage of the throttling device causes the liquid refrigerant in the evaporator to be insufficient to support the compressor to continuously output high-pressure gaseous refrigerant to the condenser. 3. Leakage of refrigerant, or insufficient refrigerant. Without explanation, there is less material that can evaporate, which is equal to vacuum.
The refrigerant (ie refrigerant) absorbs the heat of the object to be cooled in the evaporator and vaporizes into steam. The compressor continuously extracts the generated steam from the evaporator and compresses it. The compressed high-temperature, high-pressure steam is After being sent to the condenser, it releases heat to the cooling medium (such as water, air, etc.) and condenses into a high-pressure liquid, which enters the evaporator after being depressurized by the throttling mechanism, vaporizes again, absorbs the heat of the cooled object, and circulates again and again. When heating, the refrigerant changes the direction of refrigerant flow through the four-way valve. The direction of refrigerant flow is just opposite to that of cooling. The refrigerant first passes through the evaporator, then returns to the condenser, and finally returns to the compressor.
If the temperature of the outlet water of the industrial chiller is high. First, check the process set temperature value. If it is higher than the set value, the following should be observed: 1. Can the chiller load load reach the full load? If not, check the unit Whether the loading solenoid valve is faulty. 2. If it can reach full load. Check the current and whether the exhaust pressure is too high. If it is too high, it is caused by the fouling of the heat exchanger. The heat exchanger should be chemically cleaned. In the future, the unit should be operated Each parameter in the process is recorded in detail, and when preparing for abnormal situations, check it accordingly and analyze the cause of the failure.
