Industrial Air Compressors > Centrifugal Compressors
The centrifugal air compressor is a dynamic compressor which depends on the transfer of energy from a rotating impeller to the air. Centrifugal compressors produce high pressure discharge by converting angular momentum imparted by the rotating impeller (dynamic displacement). In order to do this efficiently, centrifugal compressors rotate at higher speeds than the other types of compressors. These types of compressors are also designed for higher capacity because flow through the compressor is continuous.
Adjusting the inlet guide vanes is the most common method to control the capacity of a centrifugal compressor. By closing these guide vanes volumetric flows and capacity are reduced.
The centrifugal air compressor is an oil free compressor by design. The lubricated running gear is separated from the air by shaft seals and atmospheric vents.