S38 -- Compressors (I-P)

A compressor is one of the four essential components of the basic vapor compression refrigeration system; the others are the condenser, evaporator, and expansion device. The compressor circulates refrigerant through the system and increases refrigerant vapor pressure to create the pressure differential between the condenser and evaporator. This chapter describes the design features of several categories of commercially available refrigerant compressors. POSITIVE-DISPLACEMENT COMPRESSORS Performance Abnormal Operating Conditions, Hazards, and Protective Devices Motors RECIPROCATING COMPRESSORS ROTARY COMPRESSORS Rolling-Piston Compressors Rotary-Vane Compressors Screw Compressors Scroll Compressors Trochoidal Compressors CENTRIFUGAL COMPRESSORS Application Mechanical Design Isentropic Analysis Polytropic Analysis Operation and Maintenance Symbols