Performance Improvement of Photovoltaic/Thermal (PV/T) Solar Panel by Module Temperature Reduction with Water

Crystalline is a popular solar panel mainly used in households and public roads. There are two types of crystalline panels: mono-crystalline and poly-crystalline. Mono-crystalline is popular for its higher efficiency compared to poly-crystalline, long-life service, and low investment cost. However, its efficiency drops as the module temperature increases. So, the technique for module temperature reduction needs to be applied to improve the module power generation, hence, higher module efficiency and water is a best heat remover. In this study, one type of mono-crystalline (PVT) with circulating water flow rate of 1 L/mn under the climate condition of Phnom Penh was selected. The results indicated higher power generations of the module as the module temperature was reduced by circulating cooling water up to 4 % per year. In addition, the warm/hot water leave module could be used for some household applications.