Chillers: Four Basic Types

A chiller is a machine used to produce chilled water for air conditioning or process cooling in large facilities. Most chillers operate using vapor compression, and there are four basic types: reciprocating, centrifugal, screw, and scroll. Reciprocating chillers draw refrigerant into a compressor through an intake valve, and an internal piston compresses the refrigerant. Pressure forces it through an exhaust valve where it is released back into the system to absorb more heat. Reciprocating chillers can accommodate cooling loads between 30 and 150 tons, and multiple units can be used, allowing flexibility. They are the most affordable, but require a higher level of maintenance, and there i

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