Commercial Applications
Distinguish between Geothermal energy and Ocean thermal energy.
Environmental Issues
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Answer
| S.No. | Basis | Geothermal Energy | Ocean Thermal Energy |
|---|---|---|---|
| 1. | Meaning | Heat energy obtained from hot rocks present inside the earth. | Energy obtained from the heat contained in ocean water heated by the sun. |
| 2. | Source | Hot magma and hot springs deep inside the earth's crust. | Warm surface water of the ocean. |
| 3. | Process | Hot magma collects below the earth's surface, creating hot spots used as the source of energy. | Warm surface water is used to boil liquids like ammonia to form vapours, which drive a turbine to produce electricity. |
| 4. | Reliability | Reliable and stable source unaffected by changes in weather and seasons. | Depends on the temperature of ocean water. |
| 5. | Example | Hot water springs at Dehradun, Gurgaon and Manali. | Ocean-thermal power plants installed in coastal areas. |
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