Ingeniería Mecánica

Permanent URI for this collectionhttp://repositorio.uta.edu.ec/handle/123456789/900

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Subject: search.filters.subject.ANEMÓMETRO

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    Diseño y construcción de un sistema de ventilación utilizando filtros de efecto ciclón para cajuelas de autobuses interprovinciales
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Mecánica, 2019) Villegas Hidalgo, Darwin Javier; Arroba Arroba, César Hernán
    This research work is the design and construction of a ventilation system with a cyclone filter was carried out, in order to improve the internal conditions of interprovincial bus trunks obtaining a better distribution of the air flow, reducing odors and avoiding the dilation of the rubbers of the trunks to facilitate the opening of the gates. It is divided into two parts: a numerical and an experimental. At the initial stage, it comprises the numerical analysis of trunks, which is carried out by means of a 2D geometric scale model to define the border-edge conditions and generate the meshing of the geometries for simulation at different air flow speeds with Ansys- Fluent of simple and complex trunk models with ventilation systems, allowing the visualization of the pressure data. With this, we started to propose a better alternative, determining the dimensioning of the ventilation system, also its shape, having as main source of information manuals related to ventilation systems and cyclone filter design. All the procedures of the new design were generated, and simulations were carried out in which it was possible to adjust the adequate parameters for the distribution of air in the trunk, afterwards the construction and assembly of all the elements of the system was carried out to perform the performance tests obtaining an experimental efficiency of the 85;96% cyclone with diameter particles of 150, 75, 45 and 20 microns. The experimental analysis for calibration included carrying out tests in a wind tunnel involving the trunk - wind of prototype to scale and constant speed taking pressure data record by means of BMP 280 sensors. When comparing the results it was found that the difference of pressures is of the order 1;5Pa: At the end of this process, the pressure values obtained from the experimentation of the trunk of the bus on the road at different speeds were contrasted. When comparing the results it was found that the pressure difference is of the order 150Pa: The difference between them is attributed to the control of the environment, assembly of the sensors, the precision and meteorological condition of the instruments at the time of the tests.
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    Determinación del potencial eólico disponible en el sector Mechahuasca en la parroquia de Pilahuín, cantón Ambato, provincia de Tungurahua
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Mecánica, 2019) Pico Llerena, Jonathan Javier; Yunapanta Velasteguí, José Luis
    The present work is focused on determining the wind potential from the energy resource which is generated by the wind, with the possibility of installing high-power wind turbines, in the Mechahuasca sector in Pilahuín Parish, Canton Ambato, Tungurahua Province. The research is of experimental type based on the analytical method, with the aim of evaluating variables of wind like: average speed and predominant direction, the one was taken from a meteorological tower inside the ecological reserve Chimborazo, the tower delivered data to 30 meters The data is analyzed statistically by software such as Excel and SPSS, extrapolating this data to 90 meters which is the location of the hub of a high-power wind turbine, obtaining as a result a power density of 547.5 W/m2 with a predominant direction of the East and an average speed of 7.36 m/s, these results were important for the selection of the wind turbine, since according to the IEC 61400- 1 standard, we must select the agreement at the annual average speed and the turbulence index, a wind turbine of class III or IV type A, therefore a model is selected (GW82/1500) that met the required ranges, with important characteristics such as the swept area that is 5320 m2, with a nominal power of 1500 kW, while the wind potential that would be produced anually by the wind turbine is of 2912.7 kW, finally this will cover 10% of the energy demand of the province of Bolivar that is (8,532 GWh). In conclusion, the Mechahuasca sector is not an area that can be used for the implementation of high-power wind turbines, since these must have a range above 1000 W/m2, in addition only the wind energy could be used in some summer months. However, this analysis would be useful for medium-scale turbine implementation studies, which do not present obstacles on the site that interfere with wind speed and direction, considering it a dry grass area, with an average turbulence index between 0,1 to 0,2.
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    Diseño e implementación de un software para evaluar el comportamiento en tiempo real de un sistema híbrido eólico - solar en el sector rio Blanco comunidad Yatzaputzán
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Mecánica, 2019) Espín Medina, Fernando Daniel.; Mayorga Pardo, Alex Santiago
    The present experimental work consists in the implementation of a software that determines the behavior of the solar - wind hybrid system located in the sector of Río Blanco community Yatzaputzán, that with the help of the measuring tower where the different sensors are installed and in connection with the data acquisition card allows the storage of the different variables such as wind speed, wind direction, temperature, density, and solar irradiation. The information generated by the wind - solar hybrid system establishes the connection with the GSM module that sends the collected information to the receiving station, which carries out the storage of the received information. The software establishes the connection with the stored database and through the graphical interface it allows to determine the behavior of the wind-solar hybrid system, as well as the visualization of the data and a summary table which is averaged in hours during the day.
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    Análisis del comportamiento del rotor en operación de un aerogenerador de baja potencia ubicado en el sector de Río Blanco comunidad Yatzaputzán para determinar su eficiencia
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica. Carrera de Ingeniería Mecánica, 2018) Romero Rosero, Jesús Emanuel; Mayorga Pardo, Alex Santiago
    The present experimental work consists of obtaining the characteristic curve of a low power wind turbine located in the sector of Río Blanco community Yatzaputzán, province of Tungurahua - Ecuador to determine its efficiency, for which the following variables have been sampled: of wind, rotation speed of the rotor, pressure, temperature, voltage and amperage delivered by the generator to the electric network, as well as the power factor Cp and the annual energy production of the machine were obtained. The analysis was carried out based on the regulations and bibliography on the test of the power curve for small wind turbines. Sampling was done through a data acquisition system that saves the sampled data in a database of its own in real time to tabulate them using the bine method and statistically obtain values; maximum, minimum, standard deviation and average for each bin of wind speed to then plot the power curve, power factor curve, torque coefficient curve and global power coefficient. Optimal time intervals were taken for the measurements with which the behavior of the rotor in operation can be analyzed in a better way, which will enable us to make the necessary changes in the future to increase its performance and improve its efficiency.