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Ruihai Refrigeration Equipment Co., Ltd.

Industrial Chillers, Water Cooled Chillers, Air Cooled Chillers manufacturer / supplier in China, offering High Effeciency 260kw/67ton Cooling Capacity in Industrial Field Bitzer Screw Comprossor Water Chiller, Small Air-Cooled Chiller with 1/2 HP for Rnd Laboratory, Water Cooled Screw Chiller for Medicine Use and so on.

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Supplier Homepage Company Show Chiller Wroking Principle How is water chiller working?

Chiller Wroking Principle

How is water chiller working? [Jan 14,2016]
How is water chiller working?

Part A

water chiller is a complex system, no matter for scroll water chiller or screw water chiller, air cooled chiller or water cooled chiller, but the basic components are compressorcondenser, thermostatic expansion valve (TXV), and evaporator.

Starting at the compressor, the refrigerant coming from the evaporator is compressed from a saturated gas to a high-pressure, high-temperature gas. The now hot gas is passed through the condenser, where it is cooled and condensed into a saturated liquid by rejecting the heat to the cooler ambient air (air-cooled condenser) or to facility water (water-cooled condenser).

The refrigerant then passes through the TXV, across which its pressure and temperature drop considerably. The refrigerant temperature is now lower than that of the process liquid and, as a result, heat is transferred from the process fluid to the refrigerant causing it to evaporator into a low-pressure gas.

The cycleis once again repeated as the gas flows back to the compressor.


part B

The condenser and evaporator of industrial water chillers are heat exchangers that transfer heat from one medium to another. In the case of an air-cooled condenser, an aluminum-finned cooper tube air heat exchanger is used for rejecting heat from the hot refrigerant gas to the ambient air.

A water-cooled condenser, uses a liquid-to-liquid heat exchanger to transfer heat from the hot refrigerant gas to the facility water. In the case of evaporator, a liquid-to-liquid heat exchanger is typically used to transfer heat from the process fluid to the refrigerant.

The performance of a heat exchanger depends on many factors, including the process fluid used, incoming fluid temperautre, flow rates, materials of construction, and design of the heat exchanger.

With all other factors being equal, the driving force behind the transfers of heat from one fluid to another is the difference in incoming fluid temperature.