Question

The principle of Ocean thermal energy conversion is

• A. At least a pressure difference of ${120}^{\circ }C$ between the ocean water at the surface and a certain depth.
• B. At least a temperature difference of ${120}^{\circ }C$ between the ocean water at the surface and a certain depth.
• C. At least a pressure difference of ${20}^{\circ }C$ between the ocean water at the surface and a certain depth.
• D. At least a temperature difference of ${20}^{\circ }C$ between the ocean water at the surface and a certain depth.

Answer 1

The correct option is D

At least a temperature difference of ${20}^{\circ }C$ between the ocean water at the surface and a certain depth.

Ocean thermal energy conversion uses the principle of a heat engine. It works by converting a temperature difference into energy. There should be at least a temperature difference of ${20}^{\circ }C$ between the ocean water at the surface and a certain depth. This means the difference in temperature between the warmer water on the surface and the cooler water in the depths of the ocean can be converted into electricity.