This study proposes a three-dimensional (3-D) model to investigate the detailed characteristics of conjugate conduction-natural convection heat transfer of photovoltaic cells mounted discretely on the bottom wall of a horizontal cabinet. The influences of thermal interaction between air streams inside and outside the cabinet through the conducting walls are explored. Furthermore, the enhancement of cooling performance of photovoltaic cells by using the fins is conducted. Results show that, for the system with 40 photovoltaic cells and Q =10W, the hot spot temperature drop is about 23 ℃ when the fins Nf = 170 are installed onto the cabinet bottom wall.
Keywords Photovoltaic cell, Thermal interaction, Hot spot temperature, Fin