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One alternative energy source is the temperature difference between surface and deep water in the tropical oceans. Suppose a heat engine uses surface water as its hot reservoir and deep water as its cold reservoir. (b) How much heat would have to be removed from the surface water each day in order to produce energy at the rate of a typical large power plant, about ?
In this problem we need to find the temperature increase of the flowing river, having a flow rate . The source of heat is a power plant producing useful energy at the rate . The efficiency of the power plant is .
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