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The typical thermodynamic efficiency of an OTEC installation running between surface water at 22 C and deep water at 14 C is about?
Wiki User
∙ 11y ago
(1 - (287/295)) *100 = 2.711% efficiency.
273+14C = 287K
273+ 22C = 295K
On Earth, it's more like 25C surface and 10C deep, ish, depending on where you are. In absolute (Kelvin) temperatures, that's 298K and 283K
The Carnot efficiency (maximum possible efficiency) of this is
1 - 283 / 298 = 5%
I met a guy years ago who reckoned he could get 3% real efficiency from his OTEC design.
OTEC will always have extremely low efficiency. It relies for its success on the heat being free (it is) and on being able to shift vast amounts of ocean water around with minimal friction losses (that's a bit harder).
Wiki User
∙ 11y ago
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