A heat exchanger used for cooling air discharged from a compressor. Resulting condensate may be removed by a moisture separator following the aftercooler.
A devise that removes moisture from compressed air. Typically accomplished by cooling the air through a refrigerator or desiccant bed.
The measured ambient pressure for a specific location and altitude in PSI (pounds per square inch).
A device which operates compressors in sequence according to a programmed schedule.
The amount of air flow delivered under specific conditions, usually expressed in cubic feet per minute (CFM).
A valve which permits flow in only one direction.
The ratio of the discharge pressure to the inlet pressure.
|Constant Speed Control|
A system in which the compressor is run continuously and matches air supply to air demand by varying compressor load.
|Cubic Feet Per Minute (CFM)|
Volumetric air flow rate.
Respectively, the minimum and maximum discharge pressures at which the compressor will switch from unload to load operation (cut in) or from load to unload (cut out).
The series of steps that a compressor with unloading performs; 1) fully loaded, 2) modulating (for compressors with modulating control), 3) unloaded, 4) idle.
Amount of time for a compressor to complete one cycle.
Flow of air at specific conditions required at a point or by the overall facility.
A material having a large proportion of surface pores, capable of attracting and removing water vapour from the air.
The temperature at which moisture in the air will begin to condense if the air is cooled at constant pressure. At this point the relative humidity is 100%.