In the refrigeration industry, it is divided into air-cooled chillers and water-cooled chillers. According to the compressor, it is divided into screw chillers, scroll chillers, and centrifugal chillers. In the temperature control is divided into low temperature industrial chiller and room temperature chiller, room temperature unit temperature is generally controlled in the range of 0 degrees -35 degrees. The temperature control of the low temperature unit is generally about 0 degrees to -100 degrees.

chiller is also known as: refrigerators, refrigeration units, ice water units, cooling equipment, etc., because of the use of various industries more widely, so the requirements of the chiller is not the same. Its working principle is a versatile machine that removes the liquid vapor through a compression or heat absorption refrigeration cycle.

The chiller includes four main components: compressor, evaporator, condenser, and expansion valve, thus realizing the cooling and heating effect of the unit.

cold water machine commonly known as refrigerators, refrigerators, ice water machine, frozen water machine, cooling machine, etc. Because the use of all walks of life is more extensive, so the name is countless. With the continuous development of the water chiller industry, more and more people begin to pay attention to any choice in the water chiller industry. In terms of product structure, "high energy efficiency ratio water-cooled screw unit", "water source heat pump unit", "screw heat recovery unit", "high efficiency heat pump unit", "screw type cryogenic refrigeration unit" and so on are highly competitive. Its nature and principle are a multi-functional machine, the liquid vapor is removed through a compression or heat absorption refrigeration cycle. The vapor compression chiller consists of four main components: compressor, evaporator, condenser, and some metering devices. Different refrigerants are realized through the form of vapor compression refrigeration cycle. Absorption chillers use water as a refrigerant and rely on a strong affinity between water and lithium bromide solution to achieve a cooling effect. Chillers are generally used in air conditioning units and industrial cooling. In air conditioning systems, chilled water is usually distributed to heat exchangers or coils in air handling units or other types of terminal equipment for cooling in their respective spaces, and then the cooling water is redistributed back to the condensers to be cooled down. In industrial applications, chilled water or other liquid cooling is pumped through process or laboratory equipment. Industrial chillers are used to control products, mechanisms and factory machinery cooling in all walks of life. Chillers can be divided into water-cooled and air-cooled according to the form of refrigeration. Technically, the energy efficiency ratio of water cooling is 300 to 500 kcal/h higher than that of air cooling. In installation, water cooling needs to be incorporated into cooling towers before use, while air cooling is movable without other assistance.