The maximum net power output.

Answer to Problem 154RP
The maximum net power output is
Explanation of Solution
Write the heat gain transfer rate equation
Here, heat transfer coefficient with heat gain transfer per unit area for hot body is
Write the heat loss transfer rate equation
Here, heat transfer coefficient with heat loss transfer per unit area for hot body is
Write the work done equation
Here, efficiency of the heat engine is
Write the reversible cycle relation between the hot and cold temperature reservoir.
Write the temperature relation between the reservoirs.
Here, variables are
Conclusion:
Substitute
Substitute
Substitute
Substitute
Substitute Equation (VII) in (IV).
Taking the partial derivative
Substitute Equation (IX) into (VIII).
Thus, the maximum net power output is
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Chapter 6 Solutions
EBK THERMODYNAMICS: AN ENGINEERING APPR
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