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Suppose an OTEC system using the difference in temperature between 25 C water at the ocean...

Suppose an OTEC system using the difference in temperature between 25 C water at the ocean surface and 5 C water several hundred meters below the water surface to power a Rankine power engine.

What is the maximum efficiency of the system?

If the system runs at 40% of Carnot efficiency, what flow rate of water through the system would be needed to generate 1 MW of electrical power? (density of seawater is 1000 kg/m3 and specific heat is 4.2 kJ/kg.K)

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