Each reactor was supplied with air from one large positive displacement compressor.

It is a Roots-type positive displacement compressor.

This can be achieved with an exhaust-driven turbocharger, or a crankshaft-driven positive displacement compressor.

Retrofit of R-12 stationary applications (positive displacement compressors with direct expansion evaporators)

Most compressors are either positive displacement compressors or radial compressors.

Positive displacement compressors with two sub-categories:

The principle behind positive displacement compressors utilizes a turbine to compress refrigerant into high-pressure vapor.

Reciprocating compressors are piston-style, positive displacement compressors.

Scroll compressor as a new-type, energy and material saving, and low-noise positive displacement compressor has witnessed swift market development.

This is a result of under-compression losses that occur at high pressure ratio operation of the positive displacement compressors that do not have a dynamic discharge valve.

IGE/UP/6 Application of positive displacement compressors to natural gas fuel systems IGE Communication 1646, published 1998.

This high power output is achieved by utilising forced induction - and specifically, an all-new Eaton 'Twin Vortices Series' (TVS) Roots-type positive displacement compressor.

Turbocompressor plus turbine implementations seem favorable in the MWe range, positive displacement compressor plus turbine for Nx100 kWe power, and positive displacement compressor+expander below 100 kW.