Ingeniería Civil y Mecánica

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Start date: 2020Subject: search.filters.subject.QUEMADOR DE GLP

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Now showing 1 - 4 of 4
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    Análisis de parámetros técnicos para mejora de eficiencia en quemadores de tubo radiante de un paso
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Mecánica, 2025-02) Nuñez Chadán, Romel Sebastián; Cabrera Anda, Santiago Paúl
    This study explores the variation of technical parameters that enhance the efficiency of a single-pass radiant tube burner. The parameters considered in this analysis include secondary air temperature, gas travel length, and the presence of a static mixer, aiming to evaluate their impact on flame characteristics, energy performance, and temperature distribution. The adopted methodology combines theoretical and experimental analysis, utilizing measurement equipment such as a thermal imaging camera and a gas analyzer. The results indicate that the flame with preheated air at 90 degrees reaches a maximum temperature of 251.7 degrees, while the incorporation of the static mixer allows for a maximum temperature of 233.4 degrees. Reducing the gas travel length to 0.75 meters identifies a stable mid-radiant zone of 0.25 meters, with maximum temperatures ranging from 385 degrees to 465 degrees, achieved at 11 minutes. In terms of thermal efficiency, a useful energy output of 1.36 kW was obtained, with losses of 0.94 kW through flue gases, 0.147 kW through the walls, 0.0368 kW due to unburned solids, and other losses of 0.41 kW. This results in a thermal efficiency of 46.89 percent, compared to the 61.72 percent recorded in previous studies. The reduction in thermal efficiency can be attributed to the combination of the evaluated parameters, suggesting that while flame characteristics improve with air preheating and the metallic insert, the reduced gas travel length increases heat distribution, ultimately limiting overall performance.
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    Análisis de parámetros de combustión en prototipo de quemador radiante de GLP experimental sin recuperación y su influencia sobre el aprovechamiento energético
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Mecánica, 2023-09) Llamuca Paguay, Jonathan Alexis; Velastegui Quisimalin, Lizbeth Carolina; Cabrera Anda, Santiago Paúl
    This project proposes the variation of combustion parameters as fuel pressure and injector design in an experimental LPG radiant burner prototype without recovery, to determine its influence on: energy using, flame parameters and temperature distribution in the radiant tube. The methodology combines theoretical and experimental analysis, using this measurement instruments: thermographic camera and gas analyzer. The characteristics prototype are 1.79kW power, length 1.1m, tube diameter 0.10m and injector diameter 0.5mm. The energy using includes: heat transfer 0.59 kW by natural convection and 1.05kW by radiation, losses 0.98 kW by combustion gases, 0.0918 kW by convection in walls and 0.037 kW in unburned solids, this represents a thermal efficiency between 43 and 62 percent. A real combustion reaction with 127 percent of theoretical air is proposed, which allowed identifying a radiant medium zone with thermal stability of 0.45 m length and maximum temperatures between 320 to 460 Celsius degrees reached in 660 seconds (11 min) approximately. An analysis with a bidimensional model for the internal gas flow was applied to simulate the behavior of temperature, density, velocity, and particle trajectory.
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    Diseño y construcción de un prototipo de quemador de GLP de Baja potencia para secado agroindustrial para uso en los Laboratorios de la FICM
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Mecánica, 2020) Jarrín López, Alex Gabriel; Bayas Pasto, José Luis; Cabrera Anda, Santiago Paúl
    The present technical project is based on the design, construction and functional tests of a LPG burner where information on types of burners, material characteristics was acquired, selecting the best alternative through weightings with criteria such as: cost, performance, characteristic of flame, ease of transfer and primary air with which the fuel-oxidizing mixture will be made. The main elements such as the fire cylinder, injectors and the structure that will support the cylinder and components were designed, as well as thermal insulators such as glass wool, ceramic fiber and alumina ceramic tube. In order to obtain temperature data in the fire cylinder, technological equipment was used such as: pyrometer, anemometer, thermal imager and LPG consumption meter, in addition to thermal calculations thermal expansion, combustion and losses caused by heat transfer were determined. With the use of a software, combined losses by convection and radiation were established in the Sankey diagram (5.7 porcent) , losses due to solid burns (6 percent), losses from the rear of the cylinder (7.6 percent) were established in the Sankey diagram) and unquantified losses (10 percent) obtaining a useful heat of 7.8 kWh and an efficiency of 70.7 percent of useful hot air flow. Finally, with the help of a software it was possible to analyze the shape and color of the burner flame reaching an optimum operating range with a blue flame length between 11.8 to 15.2 cm and a temperature of 487 degrees Celsius, showing the minimum presence of unburned which benefits the efficiency and calorific value of the LPG burner.
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    Diseño y construcción de un prototipo de quemador de GLP de Baja potencia para secado agroindustrial para uso en los Laboratorios de la FICM
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Mecánica, 2020) Bayas Pasto, José Luis; Jarrín López, Alex Gabriel; Cabrera Anda, Santiago Paúl
    The present technical project is based on the design, construction and functional tests of a LPG burner where information on types of burners, material characteristics was acquired, selecting the best alternative through weightings with criteria such as: cost, performance, characteristic of flame, ease of transfer and primary air with which the fuel-oxidizing mixture will be made. The main elements such as the fire cylinder, injectors and the structure that will support the cylinder and components were designed, as well as thermal insulators such as glass wool, ceramic fiber and alumina ceramic tube. In order to obtain temperature data in the fire cylinder, technological equipment was used such as: pyrometer, anemometer, thermal imager and LPG consumption meter, in addition to thermal calculations thermal expansion, combustion and losses caused by heat transfer were determined. With the use of a software, combined losses by convection and radiation were established in the Sankey diagram (5.7 porcent) , losses due to solid burns (6 percent), losses from the rear of the cylinder (7.6 percent) were established in the Sankey diagram) and unquantified losses (10 percent) obtaining a useful heat of 7.8 kWh and an efficiency of 70.7 percent of useful hot air flow. Finally, with the help of a software it was possible to analyze the shape and color of the burner flame reaching an optimum operating range with a blue flame length between 11.8 to 15.2 cm and a temperature of 487 degrees Celsius, showing the minimum presence of unburned which benefits the efficiency and calorific value of the LPG burner.