Eventos Anais de eventos
ENCIT 2016
16th Brazilian Congress of Thermal Sciences and Engineering
DEVELOPMENT OF A SOLAR SIMULATOR FOR A REAL EVALUATION OF PHOTOVOLTAIC-THERMAL SYSTEM IN TROPICAL ENVIRONMENTS
Submission Author:
Luís Mauro Moura , PR , Brazil
Co-Authors:
Wellington Meira Dancini dos Santos, Willi Gonçalez Osaka
Presenter: Luís Mauro Moura
doi://10.26678/ABCM.ENCIT2016.CIT2016-0710
Abstract
Even though the generation of photovoltaic (PV) has grown significantly in last years, two factors have limited its even more exponential growth, which are: the high cost for system acquisition, compared to the cost of connecting to the power grid; and low efficiency in the energy conversion (15% under optimum conditions), which decreases significantly with increasing in panels temperature. The combination of these two factors result in a long term to the return on investment (ROI), and this is preponderant condition for the resistance in the installation of these systems for private purposes in Brazil. In order to increase the efficiency of PV panels, several proposals have been studied to control or reduce its temperature. Photovoltaic panels evaluations are generally performed in outdoor environment, and this makes the results affected by adverse weather conditions, especially the different conditions of irradiation during the day and position of the sun during the year, partial shadows due to clouds, variation of ambient temperature and wind speed. However, for a reliable evaluation of PV panel in outdoor environment, the temperature should not vary more than 2 K and wind speed and irradiation should be practically constant. Therefore, in this work was developed an aparatus for photovoltaic test and evaluation under Brazilian conditions of temperature, irradiation and ventilation, using for this a low-cost Solar Simulator developed by us. The results indicated a good viability in the use of the Solar Simulator for PV panels efficiency evaluations under adverse weather conditions.
Keywords
photovoltaic, Solar Energy, Efficiency, solar simulator, Temperature
