Abstract In this study, a novel humidification–dehumidification desalination (HDD) system, consisting of a hybrid solar collector with two working fluids, air and ethylene glycol, is designed and tested under climatic condition of Tehran, Iran. In this design, air passes above the absorber plate, while ethylene glycol flows through the copper tubes located on the absorber plate. The dehumidification system is also equipped with thermoelectric cooling modules. The effects of different parameters including collector outlet air velocity, volumetric flow rates of ethylene glycol and saline water and the effect of thermoelectric cooling on the performance and exergy of the system have been investigated. The experimental results showed that the water production improves by 8% with increasing the collector outlet air velocity from 2.2 to 3 m/s, while it reduces by 17% when increasing the collector outlet air velocity in the range of 3 to 4.2 m/s. In addition, the daily productivity increases about 44% by increasing the volumetric flow rate of ethylene glycol in the collector in the range of 0.83 L/min to 2.24 L/min. Moreover, the daily productivity of the system improves about 55% by increasing the volumetric flow rate of saline water from 0.66 L/min to 3 L/min. Furthermore, the productivity improves about 4% as the distance between the glass cover and the absorber plate decreases from 27.25 mm to 14.75 mm. The results also show that the productivity increases about 13% by using the thermoelectric cooling system. Finally, the maximum hourly exergy efficiency and maximum daily exergy efficiency were measured as 12.75% and 8.78%, respectively. Economic analysis shows that the estimated cost of water production is 0.097 $/lit/m2 which is comparable with the other devices reported in the literature. Finally, the exergoeconomic and environmental analysis are analyzed and discussed to show CO2 mitigation and economic potential of the system.

中文翻译：

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太阳能集热器和热电冷却模块在加湿-除湿海水淡化系统中的组合-具有能源、火用、火用经济和环境分析的实验研究

摘要 在这项研究中，在伊朗德黑兰的气候条件下设计并测试了一种新型的加湿-除湿海水淡化 (HDD) 系统，该系统由具有两种工作流体（空气和乙二醇）的混合太阳能集热器组成。在此设计中，空气从吸收板上方通过，而乙二醇则流经位于吸收板上的铜管。除湿系统还配备了热电冷却模块。研究了不同参数的影响，包括收集器出口风速、乙二醇和盐水的体积流量以及热电冷却对系统性能和火用的影响。实验结果表明，集热器出口风速从 2.2 增加到 3 m/s，产水量提高了 8%，集热器出口风速在3~4.2m/s范围内增加17%。此外，通过将收集器中乙二醇的体积流量提高到 0.83 L/min 至 2.24 L/min 范围内，日生产率提高了约 44%。此外，通过将盐水的体积流量从 0.66 L/min 增加到 3 L/min，系统的日生产率提高了约 55%。此外，随着玻璃盖和吸收板之间的距离从 27.25 毫米减小到 14.75 毫米，生产率提高了约 4%。结果还表明，通过使用热电冷却系统，生产率提高了约 13%。最后，测得的最大每小时火用效率和最大日火用效率分别为 12.75% 和 8.78%。经济分析表明，水生产的估计成本为 0.097 美元/升/平方米，与文献中报道的其他设备相当。最后，分析和讨论了exergoeconomic 和环境分析，以显示系统的CO2 减排和经济潜力。