Water-energy nexus is a crucial and challenging concern that addressing it is noteworthy for the future of human beings. In addition, freshwater production is a highly energy-intensive procedure. Therefore, developing a suitable solution for this problem is of importance. In the present scenario, solar energy is one of the suitable options for desalination because solar energy is available at a low cost, is clean for the environment, and is widely available. Generally, solar collectors such as flat plate collectors (FPC) and evacuated tube collectors were experimented for desalination applications. This work presents an experimental investigation of a single-stage hybrid (ETC-CPC) groundwater solar desalination system. A compound parabolic concentrator (CPC) is placed below the evacuated tube collector (ETC) for collecting solar radiations to transfer heat to evacuated tubes which improves performance in the case of different weather conditions of Pune city in India. Experimental results show that the hybrid solar groundwater desalination system, by maintaining the optimum distance of 20 mm between ETC and CPC with Mylar as the reflecting material, could offer a drinking water production rate of up to 3.4 l/(m²h)/day. However, the proposed single-stage hybrid (ETC+CPC) groundwater solar desalination system with aluminum foil as a reflecting material could generate 1.9 liters of soft water per day. Further, the use of Mylar as a reflecting material could generate 3.5 liters of soft water per day.

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反射材料对CPC的影响以提高混合地下水太阳能淡化系统的性能

水能联系是一个至关重要的挑战性问题，解决这一问题对于人类的未来值得关注。另外，淡水生产是高能耗的程序。因此，针对此问题开发合适的解决方案非常重要。在当前情况下，太阳能是海水淡化的合适选择之一，因为太阳能价格低廉，对环境清洁且广泛可用。通常，将太阳能收集器（例如平板收集器（FPC）和真空管收集器）用于脱盐应用。这项工作提出了单级混合（ETC-CPC）地下水太阳能脱盐系统的实验研究。将复合抛物面聚光器（CPC）置于真空管收集器（ETC）下方，用于收集太阳辐射以将热量传递至真空管，从而在印度浦那市天气条件不同的情况下提高了性能。实验结果表明，混合太阳能地下水淡化系统通过以聚酯薄膜为反射材料，保持ETC与CPC之间的最佳距离为20 mm，可以提供高达3.4 l /（m）的饮用水生产率。²小时）/天。但是，拟议的以铝箔作为反射材料的单级混合（ETC + CPC）地下水太阳能淡化系统每天可产生1.9升软水。此外，使用聚酯薄膜作为反射材料每天可产生3.5升软水。