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A nuclear power plant has a reactor that produces heat at the rate of 870 MW....

A nuclear power plant has a reactor that produces heat at the rate of 870 MW. This heat is used to produce 240 MW of mechanical power to drive an electrical generator.

(a) At what rate is heat discarded to the environment by this power plant?
MW
(b) What is the thermal efficiency of the plant?

A research group plans to construct an engine that extracts energy from the ocean, using the fact that the water temperature near the surface is greater than the temperature in deep water. If the surface water temperature is 20.0°C and the deep-water temperature is 11.0°C, what is the maximum efficiency such an engine could have?

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