Abstract There has been a great concern about shortage of potable water in many countries as well as Iran, because of the dramatic low rainfall during past few decades almost in all over the Iran. There is a great concern for implementing renewable desalination systems as it seems to be the only clean and environmental friendly source to the traditional fossil fuel powered systems. This study sought to simultaneously assess the reliability of electricity and cost in off grid photovoltaic systems for a photovoltaic reverse osmosis desalination system in 9 districts of Bushehr Province in Iran. Solar data used in this study contains indices of “Clearness Index” and “Daily Solar Radiation” over a period of 16 years from 2000 to 2016. HOMER and Excel were used for technical-economic feasibility of the proposed systems. For this study, a new model of BWRO-2S-130/75 desalination system is tested and proposed. The results indicate that the proposed photovoltaic systems are technically and economically feasible. It was also found that the reliability of off grid photovoltaic system using fuzzy time function provided better results than using the simple method. The results of the evaluation of proposed photovoltaic systems by HOMER software shows that annual electricity production for Delvar and Deylam port are 72,336 and 47,915 kWh respectively which is promising. Also, maximum of 228 m3 and a minimum of 148 m3/day of potable water can be produced with cost of 1.96 to 3.02 $/m2 for Delvar and Deylam port respectively. Results indicate that using the proposed system of desalination would be economically feasible for Delvar, since the predicted water cost is cheaper compared to existing water price of $2.5. The new model of BWRO-2S-130/75 desalination can meet the water demand of the selected city.

中文翻译：

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反渗透海水淡化系统离网光伏系统研究：案例研究

摘要 由于过去几十年来几乎在伊朗各地的降雨量极低，许多国家以及伊朗都非常关注饮用水短缺问题。实施可再生海水淡化系统备受关注，因为它似乎是传统化石燃料动力系统的唯一清洁和环保来源。本研究旨在同时评估伊朗布什尔省 9 个地区光伏反渗透海水淡化系统离网光伏系统的电力可靠性和成本。本研究中使用的太阳能数据包含 2000 年至 2016 年 16 年间的“清晰度指数”和“每日太阳辐射”指数。使用 HOMER 和 Excel 来确定拟议系统的技术经济可行性。对于这项研究，测试并提出了一种新型号的BWRO-2S-130/75海水淡化系统。结果表明，所提出的光伏系统在技术和经济上都是可行的。还发现使用模糊时间函数的离网光伏系统可靠性比使用简单方法提供了更好的结果。HOMER 软件对拟建光伏系统的评估结果表明，德尔瓦港和德伊拉姆港的年发电量分别为 72,336 和 47,915 千瓦时，前景广阔。此外，Delvar 和 Deylam 港口可生产最多 228 立方米和最少 148 立方米/天的饮用水，成本分别为 1.96 至 3.02 美元/平方米。结果表明，使用提议的海水淡化系统对于 Delvar 来说在经济上是可行的，因为与现有 2.5 美元的水价相比，预测的水费更便宜。BWRO-2S-130/75海水淡化新机型可满足选定城市的用水需求。