Energy Efficiency Reference/Refrigeration/Technology Primer

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Before going to an installation to collect data, review the equipment you are going to observe. Confirm that the equipment uses vapor compression refrigeration. If not, the information contained here does not apply.

At the conclusion of this section you should be familiar with:

Common Terms[edit]

Be familiar with common terms that will be used in the discussions that follow.


A diagram of the essential equipment in a simple refrigeration cycle is shown. Each piece of equipment is then described in detail.


Be able to identify a single or multiply stage vapor-compression refrigeration system.