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首页> 外文期刊>Energy Conversion & Management >Feasibility analysis of reverse osmosis desalination driven by a solar pond in Mediterranean and semi-arid climates ?
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Feasibility analysis of reverse osmosis desalination driven by a solar pond in Mediterranean and semi-arid climates ?

机译：地中海和半干旱气候中太阳能池驱动的反渗透脱落的可行性分析？

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摘要

Solar desalination is emerging as a sustainable solution for water shortage in countries having limited access to conventional energy resources. This paper proposes an autonomous desalination system fully powered by solar energy. This system mainly consists of a salt gradient solar pond coupled to an organic Rankine cycle that drives the pumps of a reverse osmosis desalination unit. For each of these three components, a theoretical model is elaborated, and validated with numerical and/or experimental data. Then, each model is combined with a genetic algorithm to determine the optimal design and operating parameters. The optimization tests revealed that the hybrid pressure vessel can produce fresh water at a salinity of 376.6 mg/l with a specific energy consumption of about 2.1 kWh/m(3). A recuperative organic Rankine cycle was optimized to supply the desalination unit, composed of 31 hybrid pressure vessels and 3 pressure exchanger devices, with 0.28 MW of electric power with an exergy efficiency around 54%. In addition, the results predicted that the solar pond land required to run the desalination unit at a daily drinking water production of about 2380.8 m(3) is almost 33.6% smaller in the semi-arid climate compared to the Mediterranean one. The designed desalination plant can supply drinking water over 73.3% of the year, 61.2% of whom without interruption, in semi-arid climate compared to only 50% in the Mediterranean one. The discussion of the results includes some technics suggested to enhance the feasibility of the current plant.
机译：太阳海水淡化是作为可持续解决常规能源资源有限的水资源短缺的可持续解决方案。本文提出了一种自动脱盐系统，由太阳能充分供电。该系统主要由盐梯度太阳能池组成，耦合到有机朗肯循环，该循环驱动反渗透脱水单位的泵。对于这三个组件中的每一个，阐述了理论模型，并用数值和/或实验数据验证。然后，每个模型与遗传算法组合以确定最佳设计和操作参数。优化试验显示，杂化压力容器可以在376.6mg / L的盐度下产生淡水，其特定能量消耗约为2.1kWh / m（3）。优化恢复有机朗肯循环以供应由31个混合压力容器和3个压力交换器装置组成的脱盐单元，电力0.28兆瓦的电力效率约为54％。此外，结果预测，在日常饮用水中运行海水淡化单位的太阳能池塘土地约为2380.8米（3），与地中海相比，半干旱气候差异几乎小33.6％。设计的海水淡化厂可提供饮用水超过73.3％，其中61.2％，其中61.2％，在半干旱气候中，地中海只有50％。对结果的讨论包括一些技术建议提高当前工厂的可行性。

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