Conditions for optimum isentropic efficiency

AI Thread Summary
Isentropic efficiency in compressors is defined as the ratio of the work output to the work input under ideal conditions, reflecting how effectively a compressor converts energy. The discussion highlights the relationship between mass flow rate and rotational speed, indicating that higher values of both lead to optimum isentropic efficiency. The participant is struggling to find relevant experimental data to support their findings, which suggest that maximum efficiency occurs at elevated operational parameters. It is recommended to consult published performance specifications for commercially produced compressors, as these often contain valuable charts and data for comparison. Understanding these specifications can aid in validating the results and enhancing the report.
MattH150197
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Ive looked through several published journals online trying to find an experiment that I can use as background research for my report, something I can compare my findings to but I am just wasting lots of time that I could be doing the rest of my report so what I am trying to find out is how mass flow rate and rotational speed of an axial flow compressor affect the isentropic efficiency.
My results showed that the optimum efficiency was at the highest rotational speed and mass flow rate so I am guessing that high rotational speed and mass flow rate conditions are required for optimum isentropic efficiency but I need some clarification, Thanks.
 
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(1) What do you understand the term isentropic efficiency to mean ? How is it defined for a compressor ?

(2) The compressor that you are working on is a commercially produced one .

If you search you might be able to find the published performance specification . This type of specification usually includes one or more charts showing pressure/flow rate/torque/efficiency and other information .
 
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