Geração de energia piezoelétrica com base no aproveitamento de água pluvial

Abstract

Nowadays, methods of converting energy from sources such as wind, sunlight, rainwater, ocean water, and surface water sources into electrical energy are a reality. There are researchers using piezoelectric materials and/or solar panels to perform the conversion. This being said, they take the proposals in order to contribute as a technological element of renewable or clean energy extending the reach of sustainable technologies to local urban and remote communities. In this way, the present end-of-course work aimed to analyze the harvesting/generation of energy using the piezoelectric material of the PVDF type model LDT0-028K having as environmental source, rainwater. The procedure consisted of harnessing the force resulting from the flow of water through a small-scale system in the form of parallelepiped producing vibrations by vortices to the device type of clamped beam that is coupled to the piezoelectric sensor resulting in the generation of tension. The results obtained in the study showed that the system is efficient for powering low-power devices in the micro to milli voltage and power range. The maximum output voltages obtained were 67.3763 mV and 61.6720 mV, and were related respectively to the 3 L and 5 L storage volumes. The application of the system for voltage supply on a residential scale becomes unfeasible due to the large number of piezoelectric sensors required, making it more expensive. Furthermore, this study can complement and expand the availability of energy to supply small demands of energy in regions less favored by other sources. Therefore, it is concluded that the system of piezoelectric power generation based on the use of rainwater is efficient for small voltage demands, thus contributing to the renewable energy technologies. Finally, future studies and research are suggested in order to improve the efficiency of the system and configure a plausible clean energy alternative for energy supply.