Maestría en Física Aplicada

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    Simulación de una Celda de Combustible Microbiana
    (Universidad Técnica de Ambato. Facultad de Ingeniería en Sistemas, Electrónica e Industrial. Maestría en Física Aplicada, 2022) Poma Chicaiza, Tania Pilar; Recalde Moreno, Celso Guillermo
    A microbial fuel cell is simulated with data obtained from a high Andean locality. In the first phase, a microbial fuel cell (MCF) was designed and built with materials available in the environment with the aim of generating electricity. A dual experimental structure was chosen, consisting of two chambers separated by a proton exchange membrane. For the implementation of the CCM, the anodic chamber was configured with mud from the Pichan paramo where a carbon electrode connected to an external circuit was placed, the proton exchange membrane was continuously placed in the previously established space, then it was filled with distilled water dissolving 20 [g] of salt in the cathode chamber, and the other electrode was introduced forming the CCM circuit. Important parameters such as Ph, temperature, oxygen and voltage were monitored for 24 days, the monitoring was carried out for 24 days. An Arduino card was used for data collection, the ratio of the voltage produced was varied, so it was possible to observe that as glucose was supplied, the amount of bioelectricity increased, in proportion to the concentration received. The behavior and electrical operation of the CCM was obtained by connecting an external load of different sizes without losing the variability characteristics of the CCM, generating an equivalent model and then performing a simulation to obtain a quantitative comparison of the electrical operation. This process was considered useful since it allows evaluating the internal losses produced, leading to other designs and improving their efficiency. This emerging technology presents interesting perspectives due to technological progress in which electronic devices are increasingly more efficient and require less power for their operation.
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    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 Guillermo
    At 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.