Question: It has been proposed that temperature differences in the ocean could be used to run a heat engine to generate electricity. In tropical regions, the

It has been proposed that temperature differences in the ocean could be used to run a heat engine to generate electricity. In tropical regions, the water temperature is about 25oC at the surface and about 5 oC at very deep depths.
(a) What would be the maximum theoretical efficiency of such an engine?
(b) Would a heat engine with such a low efficiency be practical? Explain.

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