The condition when air or gas temperatures exiting an intercooler matches air or gas temperatures entering a compressor.

Also known as Free Air Delivered (FAD), this is the amount of gas actually compressed and delivered (at rated speeds and conditions) to a discharge system.

A supplementary volume which can be opened to temporarily increase clearance, resulting in the reduction of a compressor’s volumetric efficiency.

The total air pressure produced at a specified point within a compressed air system.

System that throttles the compressor inlet proportionally to match varying demand.

The measure of pressure compared to the absolute zero pressure of an empty space—e.g., a vacuum.

Air or gas temperature referenced from absolute zero. Known as the Rankine temperature (Fahrenheit plus 459.6) and the Kelvin temperature (Centigrade plus 273).

A process in which a desiccant liquefies by drawing in condensed moisture.

A process in which a highly porous desiccant (capable of regeneration) attracts moisture from compressed air, and removes it.

Tanks or vessels utilized for the storage of pressurized gases and damping of discharge line pulsations. Larger compressed air systems can have both primary and secondary receivers.