Geração de energia limpa através de materiais piezoelétricos poliméricos e do vento

Abstract

Due to the environmental problems currently experienced in the search for clean and renewable energies has been considered as one of the best options to obtain positive results and without environmental damages, taking advantage of what is offered by the ambient environmental, such as wind, rain, sun, among other factors that allow the generation of energy are large or small scale. Small-scale energy harvesting enables the conversion of mechanical energy captured from the environment into electrical energy through piezoelectric materials that have the capacity to generate electricity by being deformed. In this work, the experimental analysis of the small-scale clean and renewable energy harvesting is presented through the use of MEAS PVDF-LDT0 polymeric piezoelectric materials, whose vibrations were generated by the wind flow produced by a six-blade table fan with speeds of approximately 4,9 and 6,2 m/s. For the experiment, different geometric shapes of PVC laminated sheet with the following dimensions were used: 12 x 08 cm (CG1); 10 x 08 cm (CG2) and 10 x 10 cm (CG3), these were fixed to the free end of the piezoelectric material, varying its position defined as: to the medium (PGa); lower (PGb) and higher (PGc). For the fixation of the piezoelectric material, two vertical crimped beams were used, one of rigid plastic material and another one of aluminum, with the intention of verifying the influence of these materials in the obtaining of potential energy of this system. The experimental results show that the performance best of the potential energy generation was obtained by using PVC laminated sheet with dimensions 12 x 08 cm (CG1), being fixed in the position in the middle (PGa) of the piezoelectric with supporting of the cantilever beam of rigid plastic, through the response of 8,92 V and 0,00074 W.