Refrigeration and air conditioning terms
Absolute humidity The weight of the water vapour which is associated with unit quantity of air. Absorber: A device for absorbing a refrigerant, a low side element in an absorption system. Absorption refrigeration system: One in which the refrigerant as it is absorbed in another liquid, maintains the pressure difference needed for successful operation of the system. Absorptivity Ability of a material to absorb heat. Accumulator A steel shell partly filled with liquid refrigerant, the space above which is maintained by the compressor at a pressure corresponding to the required refrigerant temperature. The shell is placed in a suction line for separating liquid entrained in suction gas. Actuators Secondary control mechanisms which function in response to the requirement of the primary group in actually controlling some part of the refrigeration system. ADIABATIC COMPRESSION Compression of a vapour or gas in such circumstances that there is insufficient time for an...