The refrigeration industry is divided into air-cooled chillers and water-cooled chillers. According to the compressor, it is divided into screw chillers and vortex chillers. In terms of temperature control, it is divided into low-temperature industrial chillers and room temperature chillers. The temperature of a room temperature chiller is generally controlled between 0 ℃ and 35 ℃. The temperature of low-temperature units is generally controlled between 0 ℃ and -100 ℃.

Chiller units, also known as chillers, chillers, ice water units, refrigeration equipment, etc., have different requirements due to their wide application in various industries. Its working principle is a multifunctional machine that removes liquid vapor through compression or endothermic refrigeration cycle.

The chiller unit consists of four main parts: compressor, evaporator, condenser, and expansion valve, which achieve the cooling and heating effects of the chiller unit.

Cold water machines, commonly known as chillers, chillers, ice water machines, chillers, chillers, etc., are widely used in various industries and come in various names. With the continuous development of the chiller industry, more and more people are paying attention to it. Any choice is becoming increasingly important for humanity. In terms of product structure, competitive product structures such as "high energy efficiency ratio water-cooled screw unit", "water source heat pump unit", "screw heat recovery unit", "high-efficiency heat pump unit" and "water source heat pump unit" were introduced. Their essential principle is a multifunctional machine that removes liquid vapor through compression or heat absorption refrigeration cycle. A vapor compression refrigeration machine consists of four main parts: a vapor compression refrigeration cycle, a compressor, an evaporator, a condenser, and some metering devices to achieve different refrigerants. Absorption refrigeration machines use water as the refrigerant and rely on the affinity between water and lithium bromide solution to achieve strong refrigeration effects.

Freezers are commonly used for air conditioning units and industrial cooling. In air conditioning systems, chilled water is usually distributed to heat exchangers or coils of air conditioning units or other types of terminal equipment for cooling in their respective spaces, and then the cooling water is redistributed back to the condenser for cooling. In industrial applications, chilled water or other liquid cooling pumps are operated through process or laboratory equipment. Industrial chillers are used to control the cooling of products, machinery, and plants in various industries. According to different forms of refrigeration, chillers can be divided into water-cooled and air-cooled types. Technically, the energy efficiency ratio of water-cooled chillers is 300-500kcal/h higher than that of air-cooled chillers; In terms of installation, water cooling can only be used when integrated into the cooling tower, while air cooling can be moved without other assistance.