DESENVOLVIMENTO DE UM SISTEMA DE RESFRIAMENTO PASSIVO PARA PAINEL FOTOVOLTAICO COMERCIAL

Abstract

térmico do painel, em função das condições experimentais; incluindo o impacto da adição de superfícies estendidas (aletas) sobre a temperatura média do painel. O modelo teórico para predição da temperatura do painel fotovoltaico proposto mostra-se satisfatório quando comparado com os valores obtidos experimentalmente; e observa-se uma redução significativa da temperatura média do painel com o uso de aletas como sistema de resfriamento passivo - redução média de temperatura de 8 °C. Abstract. The installed capacity of solar energy in Brazil grew in 2019 due to the expressive participation of distributed micro and mini-generators of solar energy, with an increase of 169% from 2018 to 2019. Although photovoltaic systems do not require deep maintenance, the efficiency of photovoltaic panels decreases by 0.40 to 0.50% for each ° C gained in the operating temperature. Thus, depending on the environmental conditions, a cooling system is necessary to increase the durability, efficiency, and viability of the project. The present work analyzes the production of an installed photovoltaic panel, in order to determine the main factors that affect its performance; and performs an analytical study to describe the thermal behavior of the panel, depending on the experimental conditions; including the impact of adding extended surfaces (fins) on the average temperature. The theoretical model for predicting the temperature of the proposed photovoltaic panel is satisfactory when compared with the values obtained experimentally; and a significant reduction in the average temperature of the panel is observed with the use of fins as a passive cooling system - average temperature reduction of 8 º C.