## Related questions with answers

Question

A heat engine that propels a ship produces 500 Btu/lbm of work while rejecting 300 Btu/lbm of heat. What is its thermal efficiency?

Solution

VerifiedStep 1

1 of 2The thermal efficiency is:

$\begin{align*} \eta&=\dfrac{w}{q_{H}}\\ &=\dfrac{w}{w+q_{L}}\\ &=\dfrac{500}{500+300}\\ &=\boxed{0.625} \end{align*}$

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