Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
Integration of micro hydroelectric power plants in a multipurpose bridge-dam in the Rural Amazon
Submission Author:
Vitória Portilho , PA
Co-Authors:
Vitória Portilho, Natalia Marcia Das Graças, Rodolfo Ramalho, Davi Edson Sales e Souza, Manoel Sena, Claudio Blanco, André Luiz Amarante Mesquita
Presenter: André Luiz Amarante Mesquita
doi://10.26678/ABCM.COBEM2023.COB2023-1569
Abstract
A major problem in Rural Amazonia is still the electrical energy supply. This is justified by the difficulty of access to the communities, as well as the high cost of energy transmission and distribution to a small population. Even with the expansion of the rural grid, the issue of energy stability and cost is an important problem for the economic development of this communities. In addition, due to the its geography, the road network crosses several small watercourses, with access restricted to small bridges, mostly made of wood, which makes logistics difficult for the flow of agricultural production of the existing communities. To supply this demand for energy, the small-scale supply model, in particular with the implementation of micro hydropower plants (MHP), has proven to be a good alternative. The small Amazonian watersheds present characteristics of very low head and a large variation in flow. In this sense, it is proposed here to replace a wooden bridge with a concrete bridge/dam, including a MHP integrated to the bridge structure. The concrete bridge/dam model has technology suitable for the region and has a high potential for replication. This technology is based on the methodology developed by the Federal University of Pará for this type of MHP. The subject is scarce in the literature, and this project will analyze the implementation of this technology in a small bridge in the southeast region of Pará, specifically in Vila do Janari, a rural area of the municipality of Goianésia do Pará. The MHP will use a propeller-type hydraulic turbine, which data are available in the literature. The number and size of the turbines are defined from the flow duration curve analysis, together with the turbine efficiency and economic aspects. Field experiment and rain-flow modeling were carried out to develop the hydrologic model of the small river and some turbine arrangement are studied to define the final configuration of the MHP.
Keywords
Hydraulic turbines, micro hydroelectric plant, Bridges
