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2 TRG-TRC010-EN
notes
Introduction
Water chillers using the vapor-compression refrigeration cycle vary by the type
of compressor used. Reciprocating and scroll compressors are typically used in
small chillers. Helical-rotary (or screw) compressors are typically used in
medium-sized chillers. Centrifugal compressors are typically used in large
chillers.
As mentioned earlier, this particular clinic discusses centrifugal water
chillers.
Centrifugal water chillers can also be divided into two types based on the
method used to reject heat to the atmosphere: water-cooled or air-cooled. Since
most centrifugal chillers are water-cooled, they are the primary focus of this
clinic. Water-cooled centrifugal chillers are generally available from 100 to 3,000
tons [350 to 10,500 kW] as prefabricated machines, and up to 8,500 tons
[30,000 kW] as built-up machines.
Centrifugal Water Chillers
Figure 4
trgtrc010_book.book Page 2 Wednesday, September 1, 1999 10:39 AM