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Thermal regulation of photovoltaic system for enhanced power production: A review
Journal of Energy Storage ( IF 9.4 ) Pub Date : 2021-01-08 , DOI: 10.1016/j.est.2021.102236
Abhishek Anand , Amritanshu Shukla , Hitesh Panchal , Atul Sharma

The efficiency of the photovoltaic (PV) module is drastically decreased when integrated with building material. This efficiency decrease is mainly caused due to the temperature rise of the PV module. The temperature rise is responsible for the overall decrease in voltage and power production. Only a small fraction of the solar radiation that falls on the PV module is utilized for electricity production and the rest generates excess heat responsible for the temperature rise of the PV module. The integration of the PV panel on the roof also prevents air circulation results in the accumulation of heat. There are several techniques to manage the temperature rise viz. air cooling, water cooling, thermoelectric cooling, and phase change materials (PCMs). This paper discusses the various cooling technologies that can regulate PV temperature and augment power production. The result showed that passive cooling that relies on convection is the easiest and simplest approach and does not consume additional power. Active water cooling is effective to a greater extent but there is always a requirement of cold water which may offset the benefit of cooling. The temperature up to 18 °C can be reduced and efficiency between 1 and 18% can be enhanced by PV/thermoelectric module (TEM). The PV temperature can be lowered by about 35.6 °C by using a PCM system with the PV panel. The addition of nanoparticles has a positive influence on lowering the temperature of the PV module. The temperature can be lowered up to 16 °C by using nanoparticles in the water system with PCM. The electrical efficiency can be improved by 8–10%. The integration of PV/T with PCM can increase the heat availability time by 100%. The addition of such kind of heat extraction system increases the electrical power production and better thermal efficiency is also observed. The combined efficiency of 70–80% has been achieved in many cases. For the PV/ T system, the economic payback is obtained between 20 and 25 years and the energy payback is between 15 and 20 years.



中文翻译:

光伏系统的热调节以增强发电能力:综述

与建筑材料集成后,光伏(PV)模块的效率将大大降低。效率降低主要是由于PV模块的温度升高引起的。温度升高是导致电压和功率产生总体下降的原因。落在PV模块上的太阳辐射中只有一小部分用于发电,其余的则产生多余的热量,导致PV模块的温度升高。屋顶上的光伏面板集成还可以防止空气循环导致热量积聚。有几种技术可以控制温度升高。空气冷却,水冷却,热电冷却和相变材料(PCM)。本文讨论了可以调节光伏温度并增加发电量的各种冷却技术。结果表明,依靠对流的被动冷却是最简便的方法,并且不会消耗额外的功率。主动水冷却在更大程度上是有效的,但是始终需要冷水,这可能抵消了冷却的好处。PV /热电模块(TEM)可以降低高达18°C的温度,并可以提高1%至18%的效率。通过使用带光伏面板的PCM系统,可将光伏温度降低约35.6°C。纳米颗粒的添加对降低光伏组件的温度有积极影响。通过在带有PCM的水系统中使用纳米颗粒,温度可以降低到16°C。电气效率可以提高8–10%。PV / T与PCM的集成可以将热利用时间增加100%。添加这种类型的吸热系统可以增加电力生产,并且还可以观察到更好的热效率。在许多情况下,已达到70-80%的综合效率。对于PV / T系统,可在20至25年之间获得经济回报,而能源回报则在15至20年之间。

更新日期:2021-01-08
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