| 摘要 |
PCT No. PCT/NO80/00016 Sec. 371 Date Jan. 5, 1982 Sec. 102(e) Date Jan. 5, 1982 PCT Filed May 14, 1980 PCT Pub. No. WO81/03360 PCT Pub. Date Nov. 26, 1981.A power plant for exploitation of the temperature difference between different water layers in a pelagic area (2), comprising a closed system which is filled with ethane which is both in the liquid and vapor phases. The system comprises two heat exchanging apparatuses (13, 9) which are in fluid communication with each other, of which the first (13) supplies heat to the ethane by means of heat exchange with water from a relatively warmer water layer, while the other (9) removes heat from the ethane by means of heat exchange with water from a colder water layer, whereby a difference in pressure is created in the system which is utilized to take energy out of the system. In order to make the system large enough and the ethane pressure high enough to give a reasonable power yield, the heat exchanging apparatuses are placed in respective chambers (5, 4) which are comprised by cavities in solid or consolidated rock (1). The necessary fluid communications (6, 17) and water pipes (10, 12, 15, 16) are also blasted in the rock with fluid cross-sections large enough to make pressure losses small.
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