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| 1. |
Ocean contains enormous amount ofheat energy. Can we drive a ship across the ocean by .utilising this energy ? |
| Answer» Solution :No. This not possible because no sink (cooler body) is available. The engine of the DRIP, at the start of its CYCLE will draw some heat 2jfroni the WATER, convert a part of it into work and the rest heat is to be rejected to the sink. But no sink is available. This may also be explained with the help of efficiency expression of CARNOT’s cycle. We know that `eta=T_2/T_1` but when `T_1=T_2,eta=0` Thus without a temperature difiference, conversion of thermal energy into mechanical work is IMPOSSIBLE | |