In order to adapt to the load change of the air conditioning system during the operation of the screw chiller, the water temperature of the unit still needs to maintain its constant requirements, and the screw chiller will effectively complete this by its energy regulation. task.
The control system of the screw chiller needs to first detect the water temperature of the unit, compare it with the set value, and then issue an energy regulation command, which will increase or decrease the cooling capacity of the unit to a certain extent.
The screw chiller and the piston refrigeration compressor are the same. The adjustment of the energy of the equipment during the operation is also effective to adjust the cooling capacity by adjusting the displacement, which is mainly used for compression. The energy adjustment mechanism of the machine is realized.
The energy regulation of the multi-head unit of the screw chiller can also be realized directly by increasing or decreasing the number of compressors running, and the control program can set the loading sequence of each compressor. Therefore, the multi-head screw chiller is more widely used in engineering practice due to its excellent partial load performance.
The screw type chiller has compact structure, stable operation, stepless adjustment of cooling capacity, good energy saving and less wearing parts. It is suitable for large and medium-sized air conditioning refrigeration systems such as high-rise buildings, hotels, restaurants, hospitals and research institutes with a cooling capacity of 580~1163kW.
