Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
Low-Cost Electrolyzer for Education in Renewable Energy
Submission Author:
lucas rezende , SP , Brazil
Co-Authors:
lucas rezende, Victor Arruda Ferraz de Campos, Lucas Costa, José Luz Silveira, Celso Eduardo Tuna
Presenter: lucas rezende
doi://10.26678/ABCM.COBEM2023.COB2023-1555
Abstract
This study aims to demonstrate the impact of basic water electrolysis knowledge using a low-cost electrolyzer and accessible materials. Challenges like high equipment costs and time constraints for teachers hinder practical renewable energy experiments in classrooms, crucial for student learning. With a CAD-designed prototype, an electrolyzer was constructed for around US$150. Active learning evaluated results of a practical experiment with engineering undergraduates, showcasing the low-cost electrolyzer's function and hydrogen production effects using different electrolytic solutions. 1 M concentration NaOH and KOH were used for testing, 39 g.L-1 and 64 g/L, respectively. Voltage of 12 V and current of 60 A yielded 0.025 Nm3.h-1 hydrogen flow for both solutions. Temperature sensor data showed electrode temperature increase with current. KOH reached 55°C, NaOH 45°C. Higher temperature correlated with increased hydrogen production. Half of surveyed students lacked electrolysis knowledge; post-lesson, 96% stated the experiment improved understanding. Pre- and post-test averages showed 80% more correct answers regarding electrolysis among those unfamiliar. The experiment highlighted how classroom practical activities positively influence electrolysis comprehension and raise awareness about renewable energy processes.
Keywords
Renewable Energy Education, Hydrogen Production, renewable energy
