Experimental thermal and electrical performances of a PVT-air collector coupled to a humidification-dehumidification (HDH) cycle

Ahmed Ghazy
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Abstract

Despite their low electrical efficiencies, PVs are widely used to generate electricity from abundant solar energy. In order to maximize the utilization of incident solar energy, PVT collectors have been used to simultaneously generate electricity and thermal energy. Furthermore, combining PVTs with humidification-dehumidification (HDH) cycles can provide electricity and potable water in remote, arid rural areas that are not connected to the grid. In this paper, a PVT-air collector was coupled to an air-heated closed HDH cycle. Air was heated within the PVT collector and humidified by saline water spray inside the humidifier. Fresh water was produced by cooling humid air inside a dehumidifier that is cooled by saline water. The thermal and electrical performances of the PVT-HDH system were experimentally studied and compared to the electrical performance of a PV module with similar characteristics. The results demonstrated a significant decrease in PV temperature within the PVT-HDH system, which resulted in a 20% increase in the output power of the PVT-HDH system at midday compared to the identical PV module. In addition, the PVT-HDH system produced about 3.8 liters of water distillate for a PV module surface area of 1.48 m × 0.68 m, which contributed about 38% to the overall efficiency of the PVT-HDH system.
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与加湿-除湿(HDH)循环耦合的pvt -空气收集器的实验热学和电学性能
尽管它们的电效率很低,但pv被广泛用于利用丰富的太阳能发电。为了最大限度地利用入射太阳能,采用PVT集热器同时发电和发电。此外,将pvt与加湿-除湿(HDH)循环相结合,可以为没有连接到电网的偏远干旱农村地区提供电力和饮用水。在本文中,一个pvt -空气收集器耦合到一个空气加热的封闭HDH循环。空气在PVT集热器内加热,并在加湿器内用盐水喷雾加湿。淡水是通过在除湿机内用盐水冷却的潮湿空气来产生的。实验研究了PVT-HDH系统的热学和电学性能,并与具有相似特性的光伏组件的电学性能进行了比较。结果表明,PVT-HDH系统内的PV温度显著降低,与相同的PV组件相比,正午时PVT-HDH系统的输出功率增加了20%。此外,PV组件表面积为1.48 m × 0.68 m时,PVT-HDH系统产生约3.8升馏分水,这对PVT-HDH系统的整体效率贡献了约38%。
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来源期刊
CiteScore
4.50
自引率
16.00%
发文量
83
审稿时长
8 weeks
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