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Did you carefully complete the reading assignment?
Why would you want to use a heat pump (instead of an electric heater) to heat your house when 100% of
the energy in an electric heater can be converted directly to heat?
Isn't that more efficient? Explain.
The concept of reversibility and irreversibility is an important
one. Carefully re-read section 22.3. If you still have questions, ask
The Carnot engine is completely impractical---because it has to
operate reversibly, it would take it an infinite time to
complete a cycle. (Even operating *almost* reversibly, it will take a
long time to complete a cycle---it would still be impractical.) Why then do we bother? What is
important about this engine?
Why doesn't the Carnot engine have perfect efficiency?
Review: What's the difference between a reversible and an irreversible process?
Was there anything that you didn't understand in the reading
assignment? If so, explain.
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