Conceptual Physics (12th Edition)

Published by Addison-Wesley
ISBN 10: 0321909100
ISBN 13: 978-0-32190-910-7

Chapter 18 - Think and Explain: 56

Answer

As discussed on page 345, Carnot's equation states that the ideal efficiency of a heat engine is $\frac{T_{hot} – T_{cold}}{T_{hot}}$. Mathematically speaking, if $T_{cold}$ is fixed, the efficiency becomes higher if $T_{hot}$ is raised. Using superhot steam raises the efficiency.
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