Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
Performance analysis of a thermal photovoltaic system using water cooling and thermal storage.
Submission Author:
Evandro Cherubini Rolin , PR
Co-Authors:
Evandro Cherubini Rolin, Luís Mauro Moura, Gabriel Rabelo Thomaz
Presenter: Gabriel Rabelo Thomaz
doi://10.26678/ABCM.COBEM2023.COB2023-0692
Abstract
This work aims to evaluate the performance of a thermal photovoltaic system (PVT), comparing it with a conventional photovoltaic system (PV) to increase its photovoltaic conversion efficiency, mitigating the effect of increasing operating temperature. Water is used for cooling and thermal storage. Experimental tests are carried out in a climate-controlled chamber consisting of a solar simulator with a maximum irradiance of 1000 W/m2, ventilation of 1 m/s, water mass flow of 0.0209 kg/s, and ambient temperature and water stabilized at 25 °C. The variables measured in the tests are temperature, potential difference, electric current, and irradiance. The results show that the PVT system corresponds to the lowest operating temperature and the highest open circuit electrical voltage, with a reduction in operating temperature of 34.4 % compared to the conventional system and a 2.1 % increase in open circuit voltage. The electrical efficiency is higher in the PVT system, 5.3 % against 5.1 % in the conventional one. The main advantage of a PVT system over the conventional one is the thermal use for heating water. This work’s thermal efficiency is 75.3 % for the configuration without ventilation. The overall efficiency of the PVT system is 80.5 %. Thus, this work obtained an overall efficiency 16 times greater than the conventional system.
Keywords
electrical efficiency, Thermal Efficiency, thermal photovoltaic system, overall efficiency, Experimental tests
