Abstract Due to their different capacities, power and heat production possibility, distribution in high populated areas, city gas stations (CGS) are a good option to meet the energy for water desalination. This study is aimed at using the waste energy of the city gas stations for producing power and fresh water. Accordingly, the exhaust heat of CGS heater is employed in multi-effect desalination thermal vapor compression (MED-TVC) system and power is produced using the turboexpander. A comprehensive model is developed to evaluate the performance of three CGS with different capacities of 2.5, 5 and 11.5 based on energy-exergy-exergoeconomic analysis. In addition, the effective parameters like Thermal Vapor Compressor (TVC) inlet temperature and pressure and first effect outlet temperature are optimized by means of the multi-objective Pareto method. Since the operating conditions of the stations are different, eventually Results show that considering the drinking water production, cost, exergy efficiency and gain output ratio (GOR), MED-TVC system with two effects employed in 11.5 kg/s CGS is the optimal system. It is also found that the optimal TVC inlet temperature and pressure as well as the first effect outlet temperature are equal to 108 °C, 70 kPa and 81 °C, respectively.

中文翻译：

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利用气体减压站的能量损失潜力来生产电力和淡水

摘要 城市加油站（CGS）由于容量、电力和热力生产可能性不同，分布在人口稠密地区，是满足海水淡化能源的良好选择。本研究旨在利用城市加油站的废弃能源生产电力和淡水。因此，CGS 加热器的废热用于多效海水淡化热蒸汽压缩 (MED-TVC) 系统，并使用涡轮膨胀机发电。基于能量-火用-用能经济分析，开发了一个综合模型来评估具有 2.5、5 和 11.5 不同容量的三个 CGS 的性能。此外，通过多目标帕累托方法优化了热蒸汽压缩机（TVC）入口温度和压力以及一效出口温度等有效参数。由于站的运行条件不同，最终结果表明，考虑到饮用水产量、成本、火用效率和增益输出比（GOR），在 11.5 kg/s CGS 中采用两种效应的 MED-TVC 系统是最佳系统. 还发现最佳 TVC 入口温度和压力以及一效出口温度分别等于 108 °C、70 kPa 和 81 °C。