Trane TRG-TRC004-EN manual Review, 5HYLHZ²3HULRG2QH

period four

Review

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Figure 51

We will now review the main concepts that were covered in this clinic on refrigeration compressors.

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Period One introduced the four types of compressors commonly used in air- conditioning applications: reciprocating, scroll, helical-rotary (or screw), and centrifugal.

The first three types are called positive-displacement compressors. They work on the principle of trapping the refrigerant vapor and compressing it by gradually shrinking the volume of the refrigerant. Centrifugal compressors use the principle of dynamic compression, which involves converting energy from one form to another, to increase the pressure and temperature of the refrigerant.

38 TRG-TRC004-EN