Trane TRG-TRC004-EN manual Compressor Types, RPSUHVVRU7\SHV

period one

Compressor Types

notes

5HIULJHUDWLRQ￿&RPSUHVVRUV

SHULRG￿RQH

&RPSUHVVRU￿7\SHV

Figure 4

This period is devoted to the discussion of the different types of compressors.

UHFLSURFDWLQJ

VFUROO

KHOLFDO￿URWDU\ FHQWULIXJDO Figure 5

There are primarily four types of compressors used in the air-conditioning industry: reciprocating, scroll, helical-rotary (or screw), and centrifugal.

The traditional reciprocating compressor has been used in the industry for decades. It contains cylinders, pistons, rods, a crankshaft, and valves, similar to an automobile engine. Refrigerant is drawn into the cylinders on the downstroke of the piston and compressed on the upstroke.

Scroll and helical-rotary(or screw) compressors have become more common, replacing the reciprocating compressor in most applications due to their improved reliability and efficiency.

These three types of compressors (reciprocating, scroll, and helical-rotary) all work on the principle of trapping the refrigerant vapor and compressing it by

TRG-TRC004-EN 3