Otec full form

• • by Last updated: February 23, 2023. 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. Artwork: The concept of OTEC: could we really use heat differences in the ocean (left) to make electric power for things like laptops and kettles? Contents • • • • • • • What is OTEC? Most of the A heat engine is a machine that cycles between two different temperatures, one hot and one cold, usually extracting Artwork: Temperature gradients: As you can see from this NASA map of ocean temperatures, there are huge variations in ocean temperature between warm tropical areas (red, orange, and yellow) and colder polar and temperate regions (green and blue)...

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