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TRG-TRC004-EN iii
Contents
Introduction ........................................................... 1
period one Compressor Types ............................................... 3
Reciprocating Compressor ...................................... 4
Scroll Compressor ...................................................7
Helical-Rotary (Screw) Compressor ........................ 10
Centrifugal Compressor ......................................... 13
period two Compressor Capacity Control ........................ 18
Cylinder Unloaders ................................................ 19
Cycling On and Off ................................................24
Slide Valve ............................................................ 26
Inlet Vanes ............................................................27
Variable Speed ......................................................29
period three The Compressor in a System .........................30
System-Level Control ............................................ 30
Preventing Evaporator Freeze-Up ........................... 33
period four Review ................................................................... 38
Quiz ......................................................................... 43
Answers ................................................................ 44
Glossary ................................................................ 45