Refrigeration system Component : scroll compressor
#1

Scroll Compressor

[Image: image-23.png]
Scroll – This type compresses the refrigerant using orbiting and fixed scrolls, which squeeze the gas into 6 chambers, which decrease in volume as the scroll rotates.


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#2

According to ASHRAE’s HVAC Systems and Equipment Handbook (ASHRAE 2004, Chapter 34), 
Scroll compressors are orbital motion, positive-displacement machines that compress with two interfitting, spiral-shaped scroll members

Geometry of a Scroll By definition, a volution is a turn or twist about a center. A volute is a spiral. A spiral is a circular curve: the locus of a point moving with an ever increasing radius about a fixed center. A spiral may have one or more volutions,  If we add a third dimension to a simple spiral, the result is a coiled plane similar in appearance to a rolled strip of paper. Ancient scribes rolled written parchments onto wooden spools for storage and safekeeping, which is where we derive the term scroll.
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