First, the working principle of the refrigerator

Relying on the function of the compressor to increase the pressure of the refrigerant to achieve the refrigeration cycle, according to the type of refrigerant can be divided into a vapor compression type refrigerator based on hydraulic evaporation, the refrigerant should undergo periodic gas-liquid phase change and gas compression The chiller is based on high pressure gas expansion and refrigeration, and the refrigerant is always in a gaseous state. Absorption chiller. The refrigeration cycle is completed by the action of the absorber-generator thermochemical compressor, and can be divided into three types: ammonia absorption type, lithium bromide absorption type and absorption diffusion type. Steam jet refrigerator. The refrigeration cycle is completed by the action of a steam ejector jet compressor. Semiconductor refrigerator. The heat is generated by the thermo-electric effect of the semiconductor.

Second, the application of the refrigerator

The chiller frequency conversion device is used to adjust the speed of the centrifugal chiller compressor. After the low pressure refrigerant passes through the centrifuge, the pressure rises. The higher the speed of the centrifuge, the higher the pressure rises. In actual operation, most of the equipment is running at a non-full load. A fixed-speed centrifuge wastes energy when the equipment is running at a small load. The variable frequency centrifugal chiller can automatically adjust the compressor speed according to the change of the load, and the energy saving space is relatively large.