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Which outcome results when a Stirling engine heat exchanger is fouled?

A)Reduced engine power output
B)Increased isentropic compression ratios
C)Elevated working fluid mean pressure
D)Improved isothermal heat rejection

💡 Explanation

A fouled heat exchanger reduces heat transfer, so thermal energy bypass occurs causing lower pressure changes and less work being done to the piston travel, eventually producing less mechanical rotating power output, rather than maintaining ideal efficiency, or altered ideal thermodynamic parameters.

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