Garrod Aydan, Neda Hussain Shanza, Intwala Meet Hemantbhai, Poudhar Amruthalakshmi, Manikandan S, Ghosh Aritra
Faculty of Environment, Science and Economy (ESE), Renewable Energy Engineering, University of Exeter, Penryn, TR10 9FE, Cornwall, UK.
Department of Mechanical Engineering, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu, 603203, India.
Heliyon. 2024 Jul 4;10(13):e34147. doi: 10.1016/j.heliyon.2024.e34147. eCollection 2024 Jul 15.
Bifacial photovoltaics (bPV) provide an advantage over their traditional monofacial counterparts as they can utilise solar radiation incident on both the front and rear side of the module, allowing for increased energy production. While this is an advantage on the side of bPV, the amount of energy produced by the rear side of the bPV panel can vary greatly depending on the inclination and azimuth of the panel as well as external climatic and ground albedo conditions. This paper aims to analyse the electrical and thermal performance of bPV under varying albedo conditions, using two different materials: grass, and a reflective material. It also contains an example of bifaciality testing under real-world conditions. Several experiments were conducted to evaluate the electrical performance and the temperature distribution of the bPV panel under different weather conditions at the UK location and then the results were compared with the single diode model of bPV. Furthermore, a bPV panel temperature model has been developed for the temperate climate condition of UK. The results show that the open circuit voltage of the system increases with irradiance up to around 800 , at which point it decreased due to the increased PV system temperature. The normalised efficiency for the PV system under different conditions were also evaluated, which showed that the bPV module was most efficient under diffuse irradiance conditions, encouraging the use of the bPV technology in the UK.
双面光伏（bPV）相较于传统的单面光伏具有优势，因为它们可以利用照射在组件正面和背面的太阳辐射，从而提高发电量。虽然这是bPV的一个优势，但bPV面板背面产生的能量量会因面板的倾斜度和方位角以及外部气候和地面反照率条件而有很大差异。本文旨在使用两种不同的材料（草和一种反射材料）分析不同反照率条件下bPV的电气和热性能。它还包含一个在实际条件下进行双面性测试的示例。在英国的地点进行了多项实验，以评估bPV面板在不同天气条件下的电气性能和温度分布，然后将结果与bPV的单二极管模型进行比较。此外，还针对英国的温带气候条件开发了一个bPV面板温度模型。结果表明，系统的开路电压随着辐照度增加到约800 ，此时由于光伏系统温度升高而降低。还评估了不同条件下光伏系统的归一化效率，结果表明bPV模块在漫射辐照度条件下效率最高，这鼓励在英国使用bPV技术。
