A Industrial chiller is a machine that transfers the heat of a cooled object with lower temperatures to the environmental medium in order to obtain cooling capacity. The heat transferred from objects at lower temperatures is commonly referred to as cooling. The working fluid involved in the thermal process changes (energy conversion and heat transfer) in a refrigerator is called a refrigerant. The temperature range for refrigeration is usually above 120K, and below 120K belongs to the deep low-temperature technology range.

Industrial chiller are widely used in 

1- compression chiller.

Relying on the function of the compressor to increase the pressure of the refrigerant to achieve a refrigeration cycle, it can be divided into two types according to the type of refrigerant: vapor compression refrigeration (based on hydraulic evaporation refrigeration, where the refrigerant undergoes periodic gas-liquid phase change) and gas compression refrigeration (based on high-pressure gas expansion refrigeration, where the refrigerant is always in a gas state). 

2-Modern chillers are most widely used with vapor compression refrigeration Absorption chiller.

By relying on the absorption generator group (thermochemical compressor) to complete the refrigeration cycle, it can be divided into three types: ammonia absorption type, lithium bromide absorption type, and absorption diffusion type Steam jet chillerS. 

3-Complete the chiller cycle by relying on the action of a steam injector (jet compressor) 

4-Semiconductor chillers. Utilizing the thermoelectric effect of semiconductors to produce cooling capacity.

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