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Performance and economic investigations of solar power tower plant integrated with direct contact membrane distillation system

机译：直接接触式膜蒸馏系统集成的太阳能塔装置的性能和经济性研究

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摘要

Direct contact membrane distillation (DCMD) powered by solar energy is an attractive solution to mitigate freshwater supply problems. This paper presents an investigation on performance and cost of a 111 MWe solar power tower (SPT) plant integrated with DCMD system. The SPT plant comprised of an evaporative cooling with seawater as cooling agent in the condenser. Additionally, warm seawater leaving the condenser was introduced into DCMD system as feed water. For SPT plant, simulations revealed that an increment in incident solar power enhanced the electricity production and consequently the cooling water requirements. Annual gross electric output and cooling water requirements were estimated to be 493.8 GWh and 1,422,364 m(3), respectively. Whereas the energy cost was estimated to be 13.03 cents per kWh. Furthermore, a mathematical model was developed and solved for evaluating the DCMD system. The model was validated by means of the experimental data. In DCMD system, permeate flux and evaporation efficiency increased when feed water temperature was increased. However, specific thermal energy consumption decreased with an increase in feed water temperature. The average freshwater production by the proposed system was estimated up to 40,759 L/day with a cost of $0.392/m(3).
机译：由太阳能驱动的直接接触膜蒸馏（DCMD）是缓解淡水供应问题的有吸引力的解决方案。本文介绍了与DCMD系统集成的111 MWe太阳能塔（SPT）电厂的性能和成本调查。 SPT工厂由冷凝器中的海水作为冷却剂的蒸发冷却组成。另外，将离开冷凝器的温海水作为给水引入DCMD系统。对于SPT电厂，仿真显示，入射太阳能的增加增加了电力生产，从而提高了冷却水需求。估计年度总电力输出和冷却水需求分别为493.8 GWh和1,422,364 m（3）。而能源成本估计为每千瓦时13.03美分。此外，开发并求解了数学模型以评估DCMD系统。通过实验数据验证了该模型。在DCMD系统中，当给水温度升高时，渗透通量和蒸发效率增加。但是，特定的热能消耗随着给水温度的升高而降低。提议的系统平均淡水产量估计为40,759升/天，成本为0.392美元/平方米（3）。

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