![]() ![]() The gas is redirected to the next impeller in the return channel, or collected in a volute and discharged through the discharge nozzle. It then decelerates in the diffuser, and that energy is converted into pressure. The gas exits with a radial velocity equal to the tip velocity of the impeller. The impeller imparts work to the gas by accelerating the gas from the eye of the impeller out toward the tip. The gas enters the impeller with little or no radial velocity. Image courtesy of Elliot Group.Ĭentrifugal gas compressors are dynamic machines that impart kinetic energy to process gas by accelerating the gas through impellers ( Figure 1). They recover that energy as pressure within the diffusers. Centrifugal gas compressors are dynamic machines that impart kinetic energy into a gas by accelerating the gas through impellers. ![]()
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