Isentropic and Exergetic Efficiencies
Isentropic and Exergetic Efficiencies
(OP)
Hi to all people here, i am new around here.
I've searched the forum about this kind of thread and wasn't successful on it. What i wanted to ask is, about isentropic and exergetic eff., where isentropic is compared to the ideal condition and exergetic is comparation of Product and Fuel.
Now for the question :
Can exergetic efficiency be greater than isentropic efficiency? If it can, in what conditions do they occur (like example in a turbine).
The question is just out of my curiosity, and although i think that Exergetic Eff, will not exceed that of Isentropic, i am not convinced thoroughly, are there special occasions?
Thanks for the reply.
I've searched the forum about this kind of thread and wasn't successful on it. What i wanted to ask is, about isentropic and exergetic eff., where isentropic is compared to the ideal condition and exergetic is comparation of Product and Fuel.
Now for the question :
Can exergetic efficiency be greater than isentropic efficiency? If it can, in what conditions do they occur (like example in a turbine).
The question is just out of my curiosity, and although i think that Exergetic Eff, will not exceed that of Isentropic, i am not convinced thoroughly, are there special occasions?
Thanks for the reply.





RE: Isentropic and Exergetic Efficiencies
RE: Isentropic and Exergetic Efficiencies
RE: Isentropic and Exergetic Efficiencies
RE: Isentropic and Exergetic Efficiencies
The exergy of a turbine is work produced divided by the exergy at input substracted by exergy at output. While Isentropic is actual work produced divided by ideal work.
And also, how do these two efficiency relates?
RE: Isentropic and Exergetic Efficiencies
However, with regards to how unsure i am on the subject, perhaps that whole statement should be phrased as a question, actually.
I do know a good source for learning more about the subject though, I have to remind myself to read though it:
http://www.exergy.se/ftp/introduction.pdf
RE: Isentropic and Exergetic Efficiencies