Air Compressor

An air compressor is a pneumatic device that converts power (by an electric motor, diesel or gasoline engine, etc.) into potential energy stored in compressed air (i.e., compressed air). Using one of several methods, an air compressor blows more and more air into the storage tank, increasing the pressure. When the cylinder pressure reaches the set upper limit, the air compressor is shut off. Thus, the compressed air remains in the tank until it is used. The energy contained in compressed air can be used for a variety of applications, utilizing the kinetic energy of the air as it is released and depressurized in a tank. When the pressure in the tank reaches its lower limit, the air compressor turns on again and re-pressurizes the tank. An air compressor should be distinguished from a pump because it works with any gas / air, and the pumps work with liquid.

Compressors can be classified by pressure

Low-pressure air compressors (LPACs)
which have a discharge pressure of 150 pounds per square inch (10 bar) or less

Medium-pressure compressors
which have a discharge pressure of 151 to 1,000 pounds per square inch (10.4 to 68.9 bar)

High-pressure air compressors (HPACs)
which have a discharge pressure above 1,000 pounds per square inch (69 bar)

They can also be classified according to their design and principle of operation.

• Single-stage reciprocating compressor
• Two-stage reciprocating compressor
• Compound compressor
• Rotary-screw compressor
• Rotary vane pump
• Scroll compressor
• Turbo compressor
• Centrifugal compressor