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Abstract(s)
O presente estudo visou o desenvolvimento de um microaerogerador de energia elétrica, para colocar à disposição de atividades educativas de natureza tecnológica, capazes de proporcionar uma experiência prática enriquecedora para os alunos e que induza a compreensão de conceitos e aplicações de tecnologias de aproveitamento da energia eólica. Para tal, foi construído um micro aerogerador com recurso a componentes e ferramentas de disponíveis na instituição. A conceção do protótipo teve por base a aplicação de conceitos teóricos relacionados com o aproveitamento da energia cinética dos ventos e sua conversão em corrente elétrica, de modo a produzir um sistema portátil capaz de ser facilmente desmontado e transportado para avaliações, melhorias e futuras aplicações.
O protótipo com área de captação A = 1,188 m² apresentou boa robustez e desempenho satisfatório, tendo atingido em velocidades rotacionais máximas acima das 600 RPM e, em média de 350 a 400 RPM, quando exposto a ventos compreendidos entre 2 e 3,5 m/s. O coeficiente de aproveitamento (Cp) estimado foi de 0,35. A geração de tensão elétrica superior a 1 V ocorre a partir de 250 RPM e alcança plena carga à volta de 850 RPM, sendo capaz de recarregar um telemóvel. Por fim, ficou à disposição do IPB um aerogerador que, ainda que necessite de inúmeros melhoramentos, servirá de base para aplicações educacionais e desenvolvimento de novos estudos sobre esta temática.
The following study intends to develop a micro wind turbine by a practical experience which induces the understanding of concepts and applications of wind energy technologies and also, be available for education and technological learning. For this, a small-scale prototype was established, its respective components and necessary tools so that the wind turbine system could be fully built and studied with the resources available at the IPB. The prototype was designed by applying theoretical concepts wind kinetic energy harnessing and its conversion into electric current, in order to build a portable system capable of being dismantled and transported for evaluation and improvements. The prototype with swept area A= 1,188 m² has shown strength and satisfactory performance, on average operated between 350 and 400 RPM when under winds ranging from 2 to 3,5 m/s and reached innumerous peaks over 600 RPM. The estimated power coefficient (Cp) was 0,35. The generation of electrical voltage greater than 1 V happens from 250 RPM and reaches full load around 850 RPM, being able to recharge a cell phone. Finally, a wind turbine has made available to IPB which, although needs several improvements, serves as a basis for new studies and developments around this technology.
The following study intends to develop a micro wind turbine by a practical experience which induces the understanding of concepts and applications of wind energy technologies and also, be available for education and technological learning. For this, a small-scale prototype was established, its respective components and necessary tools so that the wind turbine system could be fully built and studied with the resources available at the IPB. The prototype was designed by applying theoretical concepts wind kinetic energy harnessing and its conversion into electric current, in order to build a portable system capable of being dismantled and transported for evaluation and improvements. The prototype with swept area A= 1,188 m² has shown strength and satisfactory performance, on average operated between 350 and 400 RPM when under winds ranging from 2 to 3,5 m/s and reached innumerous peaks over 600 RPM. The estimated power coefficient (Cp) was 0,35. The generation of electrical voltage greater than 1 V happens from 250 RPM and reaches full load around 850 RPM, being able to recharge a cell phone. Finally, a wind turbine has made available to IPB which, although needs several improvements, serves as a basis for new studies and developments around this technology.
Description
Keywords
Construção de protótipo Microaerogerador Tecnologia eólica Educação tecnológica