Ingeniería Civil y Mecánica

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Subject: search.filters.subject.PROCESO DE COMBUSTIÓN

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    Análisis de parámetros de fabricación en pellets de aserrín de eucalipto para mejorar sus características de combustión
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Mecánica, 2025-02) Sanchez Castro, Felix Xavier; Cabrera Anda, Santiago Paúl
    The manufacture of sawdust pellets has gained popularity in recent years by taking advantage of waste from the wood industry. The quality of the pellets can vary significantly depending on the manufacturing processes used. Therefore, the present work focused on improving the final quality of the pellets by adding binder to find improvements in compaction and measure their quality during combustion. The humidity percentage of the sawdust was modified through a drying process, in which both temperature and time were varied. For the production of the pellets, a cylindrical manual compaction matrix was used, applying a pressure of 30 bars and cassava starch as a binder. Three different drying conditions were carried out: natural drying (room temperature) for 24 hours; drying at 105 degrees Celsius for 30 minutes; drying at 105 degrees Celsius for 4 hours. The results showed that, when using eucalyptus sawdust pellets dried at 105 degrees Celsius for 4 hours, the best combustion characteristics were achieved, since flame areas of 3,93 square centimeters were obtained, with flame heights of 1,97 centimeters, temperatures reached 580 degrees Celsius for 100 seconds, which favors a more efficient combustion. Likewise, volatile contents of 76,34 percent, ash 0,25 percent, fixed carbon 23,40 percent and a CO concentration of 207 ppm were obtained, which indicates a cleaner combustion.
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    Diseño y construcción de un banco de pruebas para ensayos de inflamabilidad vertical de materiales utilizados en el interior de las carrocerías
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica. Carrera de Ingeniería Mecánica, 2018) Cabrera Valencia, Alvaro Fabricio; Pérez Salinas, Cristian Fabián
    The present technical work is based on the study of behavior of materials against fire, to calculate the index of vertical inflammation of the textile materials used inside the bodywork, this study has the need to know the index of inflammation. It is a requirement that bodywork companies must have to be qualified by the Ecuadorian INEN standard. For the fulfillment of this it started by an investigation to know which were the main textile materials that are used in the bodywork. Then, we proceeded to the use of ASTM D6413 Norm, materials and supplies necessary for the design and construction of the vertical chamber, with this design and following the guidelines of the standard of the Norm, the flammability test was done. Once the vertical inflammation test has been carried out, procedures to establish for the most appropriate textile materials for use inside bodywork, in order to guarantee the greatest possible safety in the event of the presence of fire inside it or in case of having a body fire.