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← ScienceWhich consequence results when soot accumulates on a heat engine's regenerator?
A)Increased differential thermal radiative heat loss✓
B)Decreased expansion due to fluid leakage
C)Reduced pumping power through the regenerator
D)Elevated parasitic conduction convective heat gain
💡 Explanation
Radiative heat loss increases because soot raises the regenerator's emissivity, amplifying blackbody radiation losses; this exceeds losses caused originally. Therefore, effective heat transfer declines significantly, rather than enhanced transfer from convection or leakage from expansion.
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