GPSA 12TH ED FIG 13-27 ATTACHED
GPSA 12TH ED FIG 13-27 ATTACHED
(OP)
hello i have a question regarding this figure
take fluid with k = 1.30 and a compression ratio of 9 go x direction and meet curve which is about 72% isentropic efficiency following the curved path and 72% polytropic efficiency
if we take the straight vertical lines we would read about 64% isentropic and about 76% polytropic efficiency
but isentropic efficiency is always greater than polytropic efficiency?
Comments>
a request please respond if you have a definite explanation, if it is only a conjecture please ignore
thank you
take fluid with k = 1.30 and a compression ratio of 9 go x direction and meet curve which is about 72% isentropic efficiency following the curved path and 72% polytropic efficiency
if we take the straight vertical lines we would read about 64% isentropic and about 76% polytropic efficiency
but isentropic efficiency is always greater than polytropic efficiency?
Comments>
a request please respond if you have a definite explanation, if it is only a conjecture please ignore
thank you





RE: GPSA 12TH ED FIG 13-27 ATTACHED
Isentropic efficiency is always less than polytropic for compressors. For expanders its the other way around.
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