Analysis of performance characteristics of semi-closed piston multi-head water chiller

January 15, 2019

The multi-head water chiller consists of two or more semi-enclosed or fully enclosed refrigeration compressors. At present, multi-head water cooled chiller can be equipped with up to eight compressors. The chiller with multiple compressors has significant energy savings because such units still have higher efficiency at partial load.

Multi-head chiller is composed of two or more semi-closed or fully enclosed refrigeration compressors. At present, multi-head water chillers can be equipped with up to eight compressions. machine. The chiller with multiple compressors has significant energy savings because such units still have higher efficiency at partial load.

In addition, when the glycol water chiller is started, it is possible to sequentially start each compressor, so that the power of each compressor is small, the impact on the power grid is small, the energy loss is reduced, and the starting sequence of each compressor can be arbitrarily changed, so that each The wear of the compressor is balanced and the service life is extended.

Another feature of the air cooled water chiller equipped with multiple refrigeration compressors is that the entire machine consists of two independent refrigerant circuits. These two independent circuits can be operated simultaneously or separately, so that they can be used alternately. The function improves the reliability of the chiller during operation.

The piston type multi-head chiller is equipped with a plurality of semi-closed piston refrigeration compressors. The heat exchangers are all made of high-efficiency heat transfer tubes and internationally renowned brand components. The whole unit has compact structure and stable performance. The semi-hermetic compressor motor is cooled by suction and has a series of protection measures. It can protect the compressor in case of excessive compressor discharge pressure, low suction pressure, oil cut, overload, overheating and lack of equal failure. compressor.

The piston type multi-head chiller is controlled by computer to realize the whole process automation control. When starting, the compressor is put into operation one by one. The cooling capacity of the air conditioner unit is adjusted by stopping part of the compressor so that the cooling capacity can be matched well with the required cooling load.

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Author:

Mr. Richard Lee

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