The ocean thermal energy conversion project uses the surface water near tropical islands with a temperature of 20°c as the hot temperature reservoir, and the water at some depth, with a temperature of 5.0°c, as the cold temperature reservoir for a heat engine. what is the maximum possible efficiency of an engine running between those two temperatures?

Explanation:

Heat engine is device operating in a continuous cycle between two reservoirs such that it transfers heat from a high temperature reservoir to a low temperature reservoir giving some work output in synchronization to Kelvin-Plank statement of the second law of thermodynamics.

Given that:

For maximum efficiency:

were:

are the temperatures of higher temperature reservoir and lower temperature reservoir respectively.

b.transmitters send radio waves, and receivers capture radio waves.

frequency or wavelenth of em radiation in a vacuum