Ingeniería Civil y Mecánica

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    Análisis de un sistema energético alternativo para el calentamiento de agua sanitaria en la compañía de economía mixta hotelera y turística Ambato
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Mecánica, 2024-02) Gamboa Vargas, Luis Alberto; Gavilanes Martínez, Sebastián Raúl; López Velástegui, Jorge Enrique
    The experimental work is focused on mitigating the emission of greenhouse gases from the burning of Liquefied Petroleum Gas, while operating a Solar Thermal System (SST) that is nearing its useful life, since its installation dates back to 2013, so it is appropriate to consider new alternatives to reduce the environmental impact and supply the energy demand of 59,533.43 (kWh/year). For sanitary water heating, the operational percentage was calculated, the main system is (SST) same that covers 57 percent and the auxiliary system comprises the use of 4 heaters that cover 43 percent, in this sense, the historical data survey was performed during the period (2018-2023), because the hotel demand was directly affected by the pandemic of COVID-19, the data obtained were essential to raise the real situation of the hotel and as a result the study of the different alternatives of thermal generation for Sanitary Hot Water (SHW) was carried out. In order to mitigate the consumption of LPG, different alternatives were established to cover the energy demand: Solar Thermal Collectors, Condensing Gas Boilers and Heat Pump. Based on different configurations, it was determined that the most viable option is the Mixed System between Heat Pumps and Solar Thermal Collectors, because it meets the previously established energy demand and at the same time its operating cost is lower compared to the other proposals.
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    Análisis del suministro de energía para el calentamiento de agua sanitaria del hospital general Ambato (IESS)
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Mecánica, 2023-09) Medina López, Patricio Camilo; López Velástegui, Jorge Enrique
    In the first phase of this study, the equipment that is part of the process for the heating of sanitary water in the machine room of the Hospital General Ambato IESS was identified. These components were classified according to their function, whether for the generation and distribution of steam and the exchanger, which is responsible for taking advantage of this fluid in order to add heat to the water that is then distributed to all the blocks of the institution. For the heating of the hospital's sanitary water, 35.526,152 gallons of Diesel No. 2 are required per year for steam generation. Calculations were made of the system losses during the most current period (April 2022 - July 2023) in order to identify any anomalies affecting the operation of the system, by analyzing numerical and quantifiable data. This resulted in an exchanger effectiveness of 41.46 percent. Thermal generation alternatives for sanitary hot water were proposed with the purpose of reducing the consumption of fossil fuels, establishing four possible systems to cover the energy demand, which are: solar thermal collectors and heat pumps; solar thermal collectors and steam; heat pumps and finally the recovery of sensible heat from the dry gases of the boiler chimney, determining that the most viable option are heat pumps because they cover the calorific consumption required per year, additionally its return on investment is shorter compared to the other processes, because approximately in a year and a half the financing will be recovered.