Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
Two-axis solar tracker for offset parabolic-dish solar concentrators
Submission Author:
Eli Wilfredo Zavaleta Aguilar , SP
Co-Authors:
George John Orbezo Alvarez, Vicente Luiz Scalon, Alexandre Duarte, Daniel Villas Bôas, Eli Wilfredo Zavaleta Aguilar
Presenter: George John Orbezo Alvarez
doi://10.26678/ABCM.COBEM2023.COB2023-1496
Abstract
Due to the climate crisis, there is a worldwide need to decarbonize industries to achieve zero emissions targets by 2050. In Brazil, heat in industries is responsible for 80% of energy demand, of which 53% comes from fossil sources. In addition, 41% of industrial processes use temperatures above 400 °C, which can be supplied by solar collectors with concentration and solar two-axis tracking systems. Two-axis solar tracking allows the concentrator to follow the sun throughout the day. This work aims to design, build, program, and evaluate the performance of two closed-loop solar tracking systems, consisting of 4 LDR sensors, an Arduino board, an ESP32-CAM board, two DC motors, two H-bridges, two-speed reduction gears, and angle sensors (MPU6050 and HMC5883L). The first solar tracking system is managed by LDR sensors and the second by image recognition. The comparison is given by measuring the solar azimuth and elevation angles by HMC5883L and MPU6050 sensors, respectively, which are compared with the theoretical ones. The first system shows an RMSE error of 2.10° for the elevation angle and 10.74° for the azimuth angle. The second system shows an RMSE error of 1.98° for the elevation angle and 6.68° for the azimuth angle, achieving an improvement with respect to the first system.
Keywords
industry, High temperature, heating
