An electrical power plant has stack gases exhausting at 150 An electrical power

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An electrical power plant has stack gases exhausting at 150

An electrical power plant has stack gases exhausting at 150 degree C. Design a basic Rankine cycle that uses water, refrigerant-134a or ammonia as the working fluid and that produces the maximum amount of work from this energy source, while rejecting heat to the ambient air at 40 degree C. I am confused about what states the given temperatures should be assigned to. Is the 150 degree C the exit temperature after the boiler? And is the 40 degree C the exit temperature after the Turbine?

Explanation / Answer

40 C will be the heat rejection process after the expansion in turbine

and 150 C will be the temp at the inlet to turbine

and Net work done will be Qh - Ql

for determining Qh and Ql values we need more info

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