Radiative cooling for vertical solar panels

by Huangyu Fang, Lyu Zhou, Lujia Xu, Saichao Dang, Stefaan De Wolf, Qiaoqiang Gan
Article Year: 2024 DOI: https://doi.org/10.1016/j.isci.2024.108806


Fang, H., Zhou, L., Xu, L., Dang, S., De Wolf, S., Gan, Q.


Radiative cooling presents a method for reducing the operational temperature of solar panels without additional energy consumption. However, its applicability to PV modules has been limited by the thermal properties of existing materials. To overcome these challenges, we introduce a V-shaped design that enhances cooling in vertical PV modules by effectively harnessing thermal radiation from both the front and rear sides, resulting in a substantial temperature reduction of 10.6 °C under 1 sun illumination in controlled laboratory conditions. Field tests conducted in warm and humid conditions, specifically in Thuwal, Saudi Arabia, demonstrate a remarkable 15% increase in efficiency while maintaining an operating temperature 0.2°C lower than that of conventional horizontal PV modules, corresponding to a significant 16.8% increase in power output. Our innovative V-shaped design offers a promising thermal strategy suitable for diverse climates, contributing to improved performance and reduced module temperatures, thereby supporting the global pursuit of carbon neutrality.