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← ScienceWhich outcome occurs when the heat input temperature decreases towards ambient in a Stirling engine?
A)Reduced engine network output✓
B)Increased engine mechanical efficiency
C)Increased rate of working fluid
D)Eliminated regenerator heat losses
💡 Explanation
Decreasing the hot reservoir temperature reduces the temperature differential used, thus reducing energy converted via the Carnot cycle; mechanical work is derived from this cycle. Because decreased differential energy will result rather than improve the efficiency, therefore work decreases.
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