CENTRIFUGAL COMPRESSOR WITH LIQUID INJECTION
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United States of America
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Issued Date -
Feb 13, 2025
app pub date -
Oct 28, 2024
filing date -
Oct 28, 2024
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Abstract
A two stage chiller includes first and second stage centrifugal compressors, at least one motor, a return channel flow path, and a plurality of injection ports. The first and second stage centrifugal compressors include first and second impellers, and first and second diffusers downstream from the first and second impellers. The at least one motor rotates the first impeller and the second impeller. The return channel flow path connects the first diffuser to the second impeller. The plurality of injection ports are located circumferentially around the second diffuser and within at least one of the first diffuser, and the return channel flow path. The plurality of injection ports located within the second diffuser are downstream of the second upstream edge of the second diffuser to deliver liquid refrigerant to the second diffuser.
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