Maestría en Física Aplicada
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Item Simulación del efecto termosifón de un dispositivo termosolar para latitud 0(Universidad Técnica de Ambato. Facultad de Ingeniería en Sistemas, Electrónica e Industrial. Maestría en Física Aplicada, 2022) Herrera Villalobos, Raúl; Recalde Moreno, Celso GuillermoAt present, conventional energy sources such as fossil fuels tend to promote or generate environmental problems, in addition to being non-renewable sources, which is why an alternative such as solar energy is sought, which is a renewable energy with a lower environmental impact. Solar energy has a wide range of applications of which one of the most used is to heat water for sanitary use, the most used devices for this purpose are solar thermal devices of evacuated vacuum tubes that use water as a transfer fluid of heat. For this reason, this project seeks to perform a simulation of the evacuated tubes located in the equatorial zone to determine the optimal angle of inclination to obtain greater performance on these devices, in addition to comparing the simulation with existing experimental results. To carry out this simulation, it was necessary to determine thermal parameters such as ambient temperature, geophysical parameters such as location with latitude, longitude and GMT, material parameters such as borosilicate and copper, Laminar and solar viscosity measurements and models such as "Solar Ray Tracing" models in order to obtain data similar to those recorded in experimentation on these evacuated tubes, an Ansys Fluent software is also used to develop this simulation because it has the models necessary to meet the simulation parameters. Within Ansys, "Design Modeler" was extracted to develop the geometries, "Mesh" to generate the mesh models for simulation using computational fluid dynamics, "Setup" to configure and simulate them, and "Result" for the analysis of results. Finally, a comparison and analysis is presented between the experiments carried out in simulation and the experimental results to determine the relationship between efficiency in the thermosyphon effect angle of inclination, relationship between temperature angle of inclination and solar incidence and angle of inclination.Item Simulación de un colector solar térmico de tubos de vacío(Universidad Técnica de Ambato. Facultad de Ingeniería en Sistemas, Electrónica e Industrial. Maestría en Física Aplicada, 2022) Sánchez Salcán, Narcisa de Jesús; Reinoso Astudillo, Cristina IsabelSolar energy is the most abundant, inexhaustible and clean of all renewable energy resources to date, it allows to reduce both the consumption of fossil fuels and the emission of harmful pollutants introduced into the atmosphere. Solar technologies are currently part of the global energy strategy, by virtue of which they do not present environmental or health risks. The present research allows to determine the optimal positioning of the vacuum tube solar collector located at the Escuela Politécnica Superior de Chimborazo for obtaining useful thermal energy. The type of research is correlational with a quantitative approach and an experimental design. Studies that include experimental and simulation models are reviewed, which helps to compare previous approaches with the current treatment of the problem. The mathematical model simulation was performed in the statistical software Rstudio, with three temperatures initials (T 1, T2, T3) and with different angles of tilt starting at 10ºC to 60 ºC and with 4 angles orientation (0 ◦, 30◦, 60◦and 90). It is concluded that the water temperature in the solar collector system is inversely related to the angle of inclination, since when increasing said angle from 10º to 60º it was observed that the water temperature decreases, therefore if you want to maximize the water temperature it should be placed with an angle of inclination of 10º and 0º orientation