ASHRAE Terminology

A Comprehensive Glossary of Terms for the Built Environment
ashrae.org/ashraeterms

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absorption refrigerating system

refrigeration is created by evaporating a refrigerant in a heat exchanger (evaporator) with the vapor then absorbed by an absorbent medium from which it is subsequently expelled by heating at a higher partial vapor pressure (in a generator) and condensed by cooling in another heat exchanger (condenser).

comfort cooling

refrigeration for comfort, as opposed to refrigeration for storage or manufacture.

refrigeration

(1) Cooling of a space, substance or system to lower and/or maintain its temperature below the ambient one (removed heat is rejected at a higher temperature) (2) Artificial cooling

refrigeration circuit

assembly of refrigerant-containing parts used in a refrigerating cycle.

refrigeration lubricant

a stable fluid that is compatible with system components, will form a friction-reducing film between rubbing surfaces and seal critical clearances, and has low-temperature transport properties suitable for the application in which it is used.

refrigeration oil

a stable fluid that is compatible with system components, will form a friction-reducing film between rubbing surfaces, will seal critical clearances, and has low-temperature properties suitable for the application.