Abstract This study investigates the thermodynamic and economic aspects of a multigeneration plant for inherent production of freshwater, power, cooling and heating by utilizing geothermal energy. The developed plant utilizes geothermal energy at a target temperature of 200 °C through a single flash-binary power plant with reinjection. The results of the thermodynamic analysis show that the overall plant energy and exergy efficiency of the plant can be as high as 61 % and 37.8 %, respectively, while the plant cost varies between 160–330 $/h. Optimization results show that an optimal exergy efficiency of 58 % is achievable when the plant cost rate is 242 $/h. The results indicate that geothermal driven freshwater production is one of the most economically feasible renewable driven clean production options, while a flash/binary power plant results in higher efficiency and lower electricity costs.

中文翻译：

---

具有反渗透海水淡化和吸收式制冷的多发电一体化闪蒸二元地热发电厂的开发和多目标优化

摘要 本研究调查了利用地热能生产淡水、电力、制冷和供暖的多发电厂的热力学和经济方面。开发的发电厂通过具有回注功能的单个闪蒸二元发电厂在 200 °C 的目标温度下利用地热能。热力学分析结果表明，工厂的整体能量和火用效率分别高达 61% 和 37.8%，而工厂成本在 160-330 $/h 之间变化。优化结果表明，当工厂成本率为 242 $/h 时，可实现 58% 的最佳火用效率。结果表明，地热驱动的淡水生产是最经济可行的可再生驱动的清洁生产选项之一，