What happens to the efficiency of a
To explain: The effect on the efficiency of a heat engine when the temperature is lowered.
Explanation of Solution
Introduction:
A Carnot engine that operates between two given temperatures will have the greatest possible efficiency. Also, all engines that employ only reversible processes will have this much same maximum efficiency when they are operating between the same given temperatures.
Heat engines absorb heat from a hot reservoir with dumping of excess heat that is not converted to useful work in a cold reservoir. In terms of reservoir temperatures, the efficiency of heat engine is
Where,
So, when the temperature of reservoir into which heat energy is lowered that is
Conclusion:
Hence, the efficiency of the heat engine increases.
Chapter 24 Solutions
Conceptual Physics: The High School Physics Program
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