Ocean thermal energy conversion : technology brief

Kempener, Ruud
Neumann, Frank

2014

621.321 134
K326

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Ocean Thermal Energy Conversion (OTEC) technologies use the temperature difference between warm seawater at the surface of the ocean, and cold seawater at between 800-1 000 metres (m) depth to produce electricity. The warm seawater is used to produce a vapour that acts as a working fluid to drive turbines. The cold water is used to condense the vapour and ensure the vapour pressure difference drives the turbine. OTEC technologies are differentiated by the working fluids that can be used. Open Cycle OTEC uses seawater as the working fluid, Closed Cycle OTEC uses mostly ammonia. A variation of a Closed Cycle OTEC, called the Kalina Cycle, uses a mixture of water and ammonia. The use of ammonia as a working fluid reduces the size of the turbines and heat exchangers required.

TEMPERATURA DEL OCEANO; AGUAS MARINAS; CONVERSION DIRECTA DE ENERGIA; PRODUCCION DE ENERGIA; OTEC; TECNOLOGIA;