Why do multistage reciprocating compressors have different compression ratio for each stage?
Answers
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05/07/2013
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A:
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Morgan Rodwell, Fluor Canada Limited, morgan.rodwell@fluor.com
The reason is usually that the designer is targeting the same maximum outlet temperature from each compression stage. As the pressure rises, the ratio of specific heats (Cp/Cv) is changing, causing a different temperature rise for a given pressure ratio.
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