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Solar humidification-dehumidification desalination systems: A critical review

机译：太阳能加湿-除湿淡化系统：重要评论

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摘要

Shortage of potable water resources is becoming a major and concerning threat to sustainable development. This situation prompts the importance of employing urgent solutions of water desalination. However, desalination is very capital-intensive and consumes significant amounts of energy; since it is currently mostly driven by fossil fuels across the world, it could leave a very large carbon footprint. In this regard, moving towards green energy supplies for desalination is a must for today's world. Among multiple desalination techniques, humidification-dehumidification is one of the most efficient methods to be considered for remote regions with moderate fresh water demand. This is majorly because it requires minimal operational and maintenance considerations. In this review paper, solar humidification-dehumidification desalination is investigated and studied throughout the literature. Accordingly, all considerable research efforts of the field are analyzed and they are classified into three major categories, namely experimental studies, numerical studies, and optimization, exergy, and economic studies. This classification is conducted to make an appropriate balance among the performed studies based on the research methodology. Each section is in turn categorized and discussed comprehensively and the corresponding major research points are introduced. Finally, major research findings and gaps of the field are outlined and future research prospect is discussed.
机译：饮用水短缺正在成为一个主要问题，并且关系到可持续发展的威胁。这种情况提示了采用紧急淡化水解决方案的重要性。然而，脱盐非常耗费资本，并且消耗大量能量。由于目前全球主要由化石燃料驱动，因此它可能会留下很大的碳足迹。在这方面，当今世界必须走向淡化的绿色能源供应。在多种淡化技术中，加湿除湿是淡水需求适中的偏远地区最有效的方法之一。这主要是因为它需要最少的操作和维护考虑。在这篇综述文章中，对太阳能加湿-除湿脱盐进行了全面的研究。因此，分析了该领域的所有重要研究成果，并将它们分为三大类，即实验研究，数值研究以及优化，火用和经济研究。进行此分类是为了根据研究方法在已进行的研究之间取得适当的平衡。每个部分依次进行分类和讨论，并介绍相应的主要研究点。最后，概述了该领域的主要研究发现和差距，并对未来的研究前景进行了讨论。

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