Question

OTEC plants have energy conversion efficiencies that are better than of modern car engines

Answer 1

Earth? It might be better called Oceanus: most of it is, after all, covered in water—much of it very warm water. The really interesting thing about the ocean is not how hot it is, but the difference in temperature between the surface (where the Sun keeps the sea relatively hot) and the depths (where the water, never warmed by the Sun, is considerably cooler). As any engineer knows, a temperature difference like this is very useful indeed if you're trying to make power. So why not use the heat in Earth's vast oceans to generate useful energy? That's the basic thinking behind OTEC (ocean thermal energy conversion), first suggested in 1881, which involves extracting useful energy from the heat locked in the oceans. How much energy are we talking about? According to some estimates, there's enough heat in the upper layers of the oceans to meet humankind's energy needs hundreds of times over. Sounds great! So... how exactly does it work? Let's take a closer look!

Answer 2

OTEC (ocean thermal energy conversion) is deemed to be the most effective than that of the modern car engines as for the reasons that with OTEC, one can easily change the temperate and for running a car the temp change i very necessary. So using the OTEC, for running a car is much more better, worthy and a cost effective decisions.