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The cooling principle of the chiller


The operation of the chiller system is through three in […]

The operation of the chiller system is through three interrelated systems: refrigerant circulation system, water circulation system, and electrical automatic control system.
Compressor: The compressor is the central component of all refrigeration systems and the source of power for refrigerant compression. Its function is to convert the input electrical energy into mechanical energy and compress the refrigerant.
Chiller refrigerant circulation system:
The liquid refrigerant in the evaporator absorbs the heat in the water and starts to evaporate. After all, a certain temperature difference is formed between the refrigerant and the water, and the liquid refrigerant is also completely evaporated into a gaseous state and then sucked and compressed by the compressor (pressure and temperature addition) , the gaseous refrigerant absorbs heat through the condenser (air-cooled/water-cooled), condenses into liquid, and after being throttled by the thermal expansion valve (or capillary), it becomes a low-temperature and low-pressure refrigerant and enters the evaporator to complete the refrigerant cycle process.
Because the air-cooled condenser pays special attention to its own cleanliness, if it accumulates dirt, it will not only affect the heat dissipation effect, reduce the cooling capacity, but also affect the increase of shaft power, which will easily damage the compressor, so it is necessary to pay attention to: clean the condenser regularly (please Determined according to the environment of use) It is recommended to use a high-pressure air gun to blow it once a week, and flush it with clean water every three months if necessary.
After the compressor has been working for 1000 hours, it should be checked: 1. Whether the lubricating oil is normal; 2. Whether the current is normal when the compressor is working; 3. Whether there is any abnormal sound when the compressor is working.
The temperature of the return water of the chiller should not be higher than 40 degrees. The higher the return water temperature, the greater the damage to the compressor.


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