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follow the inside surface of the cam ring. The space between the vanes is reduced near the outlet due to the eccentricity. This force compresses the fluid. 5. Heat pumps Compressor Types Positive Displacement Dynamic Reciprocating Single-acting Rotary Lobe Liquid ring Screw Scroll Vane Axial Centrifugal Displacement Double-acting Diaphragm Fig. 5.11. Compressor classification (Source: own elaboration) Centrifugal compressors use the rotating movement of an impeller wheel to create the centrifugal force. A diffuser converts the velocity energy to pressure. Centrifugal compressors are well adjusted to compress large volumes of refrigerant to a relatively low pressure. The compressive pressure generated by the impeller wheel is small, therefore centrifugal compressors usually use two or more stages in a series to generate high compressive forces. The axial flow compressor is a dynamic rotating compressor continuously accelerating the fluid. The fluid flows in an axial direction through a series of rotating blades and stationary vanes that are concentric with the axis of rotation. The flow trajectory decreases in a cross-sectional area in the direction of the flow. This decreases the volume of the air as compression increases gradually. Air pressure rises each time it passes through a unit of rotors and stators (Althouse et al., 2013). 155PDF Image | Heat Pumps 978-83-65596-73-4
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CO2 Organic Rankine Cycle Experimenter Platform The supercritical CO2 phase change system is both a heat pump and organic rankine cycle which can be used for those purposes and as a supercritical extractor for advanced subcritical and supercritical extraction technology. Uses include producing nanoparticles, precious metal CO2 extraction, lithium battery recycling, and other applications... More Info
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