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Rankine Cycle Efficiency Vs Steam Turbine Efficiency

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#1 NoobMi


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Posted 24 December 2020 - 05:18 AM

Are the 2 referring to the same thing?

Appreciate if anyone can share some good resources on the usage of these 2 efficiency in gas-fired power plants.



#2 breizh


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Posted 24 December 2020 - 07:30 AM


Consider these resource to support your work :



Christmas present.


#3 NoobMi


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Posted 25 December 2020 - 02:43 AM

thanks for the link.


After going through the information, i would like to confirm if my understanding below is correct?


1) Rankine Cycle Efficiency = Theoretical maximum efficiency that can be obtained from the steam/water cycle.

2) Isentropic Efficiency of Steam Turbine = Actual Work Done / Isentropic Work Done, where Actual Work Done < Isentropic Work Done


Overall efficiency = Rankine Cycle Efficiency * Steam Turbine Isentropic Efficiency, assuming there are no other inefficiencies in the system (e.g. boiler / pump efficiency)

Edited by NoobMi, 25 December 2020 - 02:44 AM.

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