Tuesday, August 21, 2012

Wide Application of Air Cooled Screw Chiller

Energy Efficient Air Cooled Screw Chiller

People often use the air cooled screw chiller to remove the heat from the water or other process fluid through a refrigeration system which dissipates such heat back into the air. The outstanding benefit of such air cooled screw chiller and low temperature chiller is that they function in an energy efficient way.

Features of Air Cooled Screw Chiller

The chiller functions through applying the changing state of a refrigerant gas which when forced through an orifice at higher pressure changing state from a liquid to a gasoline, absorbing heat through the chiller evaporator heat exchanger. This cold expanded gas then goes through the chiller refrigeration compressor where it is compressed into a hot, dense gas and pumped to the chiller condenser. The volume that the compressor can pump, the refrigeration gasoline utilised, as well as the operating conditions determine how much heat is removed. With the air cooled chiller condenser the refrigerant is forced with the compressor through smaller sized copper tubes which have thin aluminum fins mechanically bonded to them. Ambient air is then forced under the help of the condenser coil with a chiller fan. This leads to the hot refrigerant gasoline to condense into a liquid, changing state, and releasing the heat that the gasoline collected inside the chiller evaporator. The waste heat is then carried away into the ambient air with the fans. The liquid is then forced through the orifice and the process starts once again. The heart of the chiller is the refrigeration compressor. This is a pump that utilizes electrical power to pump refrigerant inside the system. Based on the application such as dimension or operating temperature, different compressor pumping technologies are utilised. Smaller sized air cooled screw chillers use refrigeration compressors such as rotary compressors, scroll compressors, and reciprocating compressors. Greater chillers use refrigeration compressor including reciprocating compressors, screw compressors, absorption compressors, as well as centrifugal compressors.

Temperatures Required for the Air Cooled Screw Chiller

The operating temperature of the air cooled screw chiller as well as low temperature chiller is determined by the process cooling requirement of our customers. For instance, the water at 7℃ outlet from the chiller evaporator and at 12℃ return is typically required for the air cooled screw chiller and low temperature chiller. And a chiller refrigerant is a must in an ambient air environment with temperature of 45℃. A chiller refrigerant gas would be acceptable if a higher chiller water outlet temperature is required, and you may enjoy the benefits of enabling the chiller to a much higher ambient situation. For instance, the chillers in the Middle East and in Australia are usually located in the places where the ambient air reach up to 50℃ or more.

This article is come from: http://pannel.aluminum-machine.com/air-cooled-screw-chiller/wide-application-of-air-cooled-screw-chiller.htm

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