A power cycle operates between a lake’s surface water at a temperature of 270C and water at a depth whose temp?
A power cycle operates between a lake’s surface water at a temperature of 270 C and water at a depth whose temperature is 120 C. At steady state the cycle develops a power output of 10 kW, while rejecting energy by heat transfer to the lower temperature water at the rate of 14,400 kJ/min.
Homework:
Determine the thermal efficiency of the power cycle.
Determine the maximum efficiency of any such power cycle
I need help on this, thanks.
Update:27 degree C and the other one is 12 degree C
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You have a problem here. Water in a lake cannot be at 120 C, much less 270. Please check the question again.