Question

As an environmentally friendly idea, some have proposed using the temperature gradient of the ocean to generate electricity. This system would use the temperature gradient between the surface of the ocean (at about 200 C) and the water temperature at a depth of about 1 km (at about 5.0 0C). Assume the power output of such a plant is 76 MW, how much energy is taken from the warm reservoir? Assumee the plant operates at maximum efficiency. Express your answer in J/s