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Explain ocean-thermal energy and how can it be harnessed. Mention any two limitations in obtaining the energy from the oceans ? |
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Answer» The difference in temperature between warm surface, water heated by the sun and colder water found at ocean depth is a source of energy called Ocean thermal energy. The difference in temperature is exploited in OTE conversion plants. The warm surface water is used to boil to volatile liquid like ammonia. The vapours are used to run the turbine of a generator. Limitations : (i) Efficient commercial exploitation is difficult. (ii) Expensive set up. |
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