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Which outcome increases when a geothermal power plant turbine operating near its maximum condensation pressure experiences a rise in ambient temperature?

A)Reduced thermal energy conversion efficiency
B)Increased rate of mineral scale buildup
C)Enhanced steam condensate subcooling
D)Lower concentration of non-condensable gases

💡 Explanation

Reduced thermal conversion efficiency occurs because increasing temperature raises the low-side pressure, decreasing the temperature differential, and thus diminishing the efficiency, according to the Carnot cycle. Therefore, conversion declines, rather than any other effects from water chemistry at the condenser.

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