Could Turbine Exhaust Temperatures Reach Below Zero Celsius?

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albertov123
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Could turbine exhaust temperature be negative celsius?

My calculations yield 176 K. Is that possible?

Inlet conditions are 7.8 MPa and 625 K. Exit pressure is 1 atm. (100 kPa.)
 

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Albertov123 said:
Could turbine exhaust temperature be negative celsius?

My calculations yield 176 K. Is that possible?

Inlet conditions are 7.8 MPa and 625 K. Exit pressure is 1 atm. (100 kPa.)
Instead of making us guess, why don't you post your calculations?
 
It's a bit complicated.
 
Last edited:
Is this a steam turbine?

PS: Check out the forum rules for the homework sections.
 
CWatters said:
Is this a steam turbine?

PS: Check out the forum rules for the homework sections.
CWatters: The OP posted his calculations before this thread was moved to the HW forum, then the calculations disappeared from the thread. As far as I can recall, the working fluid was a van der Waals gas rather than an ideal gas, with certain values given for the constants in the vdW equation of state.
 
Albertov123,

I think you owe it to SteamKing and CWatters to paste into this thread the results of our private communications on this problem. Now you know why I don't like helping someone in private discussions. Please don't put me in that position again.

Chet