OS2-14 アンモニア/水を用いた海洋温度差発電の最適組成に関する研究(OS2 自然エネルギー)

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  • OS2-14 A Study of Optimum Mass Fraction of OTEC Using Ammonia / Water Mixture as Working Fluid

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Ocean Thermal Energy Conversion (OTEC) is a power system to convert heat energy into electricity by the sea water temperature difference between surface warm sea water and deep sea water. Uehara cycle is used ammonia/water as working fluid. In this paper, parametric analysis of the optimum mass fraction characteristic of OTEC using Uehara cycle were discussed with three cases of regenerator heat transfer performances. The given conditions were the boiling pressure, evaporator outlet temperature, condensate temperature, mass flow rate of extraction and evaporator inlet mass fraction. As a result, the effect of the regenerator heat transfer performance on the maximum cycle efficiency was decreased and the ratio of mass flow rate of vapor was increased with increment of the boiling pressure.

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