What is otec ? Which two main points are necessary for its working ?
Answers
Answer:
OTEC uses the ocean's warm surface water with a temperature of around 25°C (77°F) to vaporize a working fluid, which has a low-boiling point, such as ammonia. The vapor expands and spins a turbine coupled to a generator to produce electricity. ... That condenses the working fluid back into a liquid, so it can be reused.
Answer:
OTEC : Device used to harness ocean thermal energy.
(a) Temperature difference of 20ºC or more.
(b) Warm surface boil ammonia and vapours are used to run the turbine.
(c) Minimum depth of water – 2000 m.
Explanation:
Ocean thermal energy conversion (OTEC) is a source of renewable energy wherein the temperature differential between deeper, colder water and warmer, shallow water is used to run a heat energy engine and produce electricity. The greater the temperature differential, the higher the efficiency of the heat engine. Consequently, this technology is thought to be most effective in the tropics, where the differential between deep water and surface water is the highest. OTEC has the potential to produce energy 10 to 100 times more efficiently than wave power.