In a steam engine , the boiler temperature is at 150 C and the cold temperature

ID: 2289382 • Letter: I

Question

In a steam engine , the boiler temperature is at 150 C and the cold temperature reservoir is at 35 C. A. Find the maximum efficiency that this engine can attain. B. In a time over which the engine performs 10.0 kj of work, what is the minimum energy that must be discharged into the cold temperature reservoir In a steam engine , the boiler temperature is at 150 C and the cold temperature reservoir is at 35 C. A. Find the maximum efficiency that this engine can attain. B. In a time over which the engine performs 10.0 kj of work, what is the minimum energy that must be discharged into the cold temperature reservoir A. Find the maximum efficiency that this engine can attain. B. In a time over which the engine performs 10.0 kj of work, what is the minimum energy that must be discharged into the cold temperature reservoir

Explanation / Answer

Given,

TH=150 C=423K

TC=35 C=308K

A. Max efficiency=1-TC/TH=1-308/423=0.272

B. Given W=10.0 kJ

efficiency=W/(W+QC)

0.272=10.0/(10.0+QC)

QC=26.76 kJ

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In a steam engine , the boiler temperature is at 150 C and the cold temperature

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