Question

To obtain ocean thermal energy, the plants can operate if the minimum temperature difference between water at surface and water at depths up to 2 km is

• A.
  ${40}^{\circ }C$
• B.
  ${60}^{\circ }C$
• C. ${80}^{\circ }C$
• D.
  ${20}^{\circ }C$

Answer 1

The correct option is D

${20}^{\circ }C$
Ocean thermal energy conversion (OTEC) power plants operate as long as the temperature between the warm surface water and the cold deep water differs by approximately 20°C.

Hence, the correct answer is option (d).