Abstract This paper presents a novel energetic integration of a Multiple Effect Thermal Desalination System (MED) and an Organic Rankine Cycle (ORC) for simultaneous production of potable water and electrical energy, using low-temperature energetic sources. The thermal energy required for the system's operation is supplied by the MED's evaporator, while the ORC is activated using a fraction of the latent heat of condensation of the water vapor produced in the first effect of the MED. By doing this, the production of water in the first stage of the desalination system increases and, thus, the final production of distillate also increases. A simulation and validation of the proposal was conducted. The MED/ORC system has a 3.95% increase on the average Performance Ratio when the electrical energy production increases in 10 kW, presenting only a 1.57% increase on the total heat transfer area. MED/ORC system with an electrical energy production of 50 kW is 22% more efficient in water desalination than a MED system without integration, while requiring only 6.9% more heat transfer area. The results show that the MED/ORC energetic integration studied benefits both the final production of desalinized water, and the MED's efficiency without considerably increasing the required heat transfer area.

中文翻译：

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低温多效海水淡化/有机朗肯循环系统，具有淡水和电能生产的新型集成

摘要 本文提出了多效热脱盐系统 (MED) 和有机朗肯循环 (ORC) 的新型能量集成，用于使用低温能源同时生产饮用水和电能。系统运行所需的热能由 MED 的蒸发器提供，而 ORC 则使用 MED 第一效中产生的水蒸气冷凝潜热的一部分来激活。通过这样做，海水淡化系统第一阶段的水产量增加，因此馏出物的最终产量也增加。对该提案进行了模拟和验证。当电能产量增加 10 kW 时，MED/ORC 系统的平均性能比增加 3.95%，总传热面积仅增加 1.57%。发电量为 50 kW 的 MED/ORC 系统在海水淡化方面的效率比没有集成的 MED 系统高 22%，而传热面积仅增加 6.9%。结果表明，研究的 MED/ORC 能量集成有利于淡化水的最终生产和 MED 的效率，而不会显着增加所需的传热面积。