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TRG-TRC012-EN 19
period two
Refrigeration Cycle
notes
Manufacturers are continuously improving their designs of helical-rotary water
chillers. New chillers need to be designed around the characteristics of the
refrigerant. Today there are 5 strong candidates for use with positive-
displacement, helical-rotary chillers. They are HCFC-22, HFC-134a, HFC-404a,
HFC-407c and HFC-410a.
helical-rotary water chillers…
Refrigerants
▲ HCFC-22
▲ HFC-134a
▲ HFC-404a
▲ HFC-407c
▲ HFC-410a
Figure 29