Determination of load in fittings Home Systems “k”
Abstract
Hydraulic load losses in fittings are important when designing hydro sanitary systems to estimate the service pressure that will be taken at certain demand points. The objective of this study was to determine the hydraulic load losses in the most frequently used fittings in household hydraulic supply systems, by creating a hydraulic test bench with different diameters of pipes and fittings in PVC material. Through a centrifugal pump, the water was propelled with determined pressure and flow and through a data logger, the pressures were recorded before and after each installed element that was analyzed. In addition, a calibrated hydraulic bench of ARMFIELDC6 – MKII – 10 brands were used to analyze the pressure losses in accessories, where the water was circulated with different flow rates and pressures to obtain circulating flow ratios with the resistance factor “k” obtained. With the built hydraulics bench it was determined that the resistance factor “k” in each installed branch varies depending on the internal diameter and circulating flow of each pipeline, resulting in the accessories: Universal, Elbow 90 °, and TEE are inversely proportional to its diameter. On the other hand, the union fitting is directly proportional to its diameter, with the hydraulic bench ARMFIELD C6 - MKII - 10 the value of the resistance coefficient “k” obtained experimentally is inversely proportional to the circulating flow in all the fittings inflows ranging from 0,4 L / s up to 1,3 L / s.
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Anaya-Durand, A. I., Cauich-Segovia, G. I., Funabazama-Bárcenas, O., & Alfonso Gracia-Medrano-Bravo, V. (2014). Evaluación de ecuaciones de factor de fricción explícito para tuberías. Educación Química, 25(2), 128-134. doi:10.1016/s0187-893x(14)70535-x
Benavides-Muñoz, H., Morocho Guaillas, J., & Ojeda-Salazar, M. (2018). Comparación de caudales de consumo con aquellos propuestos en la normativa ecuatoriana CPE INEN 005-9-2:1998. Universidad Técnica Particular de Loja.
Bombardelli, W. W. Á., Camargo, A. P. d., Frizzone, J. A., Lavanholi, R., & Rocha, H. S. d. (2019). Local head loss caused in connections used in micro-irrigation systems. Revista Brasileira de Engenharia Agrícola e Ambiental, 23(7), 492-498. doi:10.1590/1807-1929/agriambi.v23n7p492-498
Calderón, J., & Pozo, C. (2011). Diseño y construcción de un banco de pruebas para pérdidas de carga en tuberías y accesorios con simulación. Universidad Politécnica Salesiana SEDE Quito, Ecuador.
Cengel, Y., & Cimbala, J. (2010). Mecánica de fluidos. Fundamentos y aplicaciones (Vol. II). México: McGRAW-HILL/INTERAMERICANA EDITORES, S.A. DE C.V.
Domingo, A. (2011). Macánica de Fluidos. España.
Flores, C., & Brito, H. (2018). Design of a piping system to measure constant accessories.
García, A. (2006). HIDRÁULICA. PRÁCTICAS DE LABORATORIO (Vol. I). VALENCIA: EDITORIAL DE LA UPV.
Kaźmierczak, B., Ligaj, K., Widomski, M. K., Musz-Pomorska, A., Jadwiszczak, P., Kutyłowska, M., & Miller, U. (2019). Minor pressure losses for different connections of PP-R and PEX/Al/PEX installation pipes. E3S Web of Conferences, 100. doi:10.1051/e3sconf/201910000045
Manco, D., Guerrero, J., & Ocampo, A. M. (2012). Eficiencia en el consumo de agua de uso residencial. Revista Ingenierías Universidad de Medellín, II, 23-38.
Mederos, G. (2012). Obtención de modelos matemáticos para los coeficientes de pérdidas de carga en accesorios hidráulicos. Instituto Superior Politécnico "José Antonio Echeverría",
Olmos, C. F. G., Saiz, J. R. Á., Rodríguez, S. L., & Prados, J. C. (2006). Diseño de instalaciones para acondicionamiento de aguas mediante tecnologías limpias. Revista Colombia Forestal, 9, 177-185.
Rivas, A., & Sánchez, G. (2008). Guiones de las prácticas del laboratorio de mecánica de fluidos: Tecnun.
Saldarriaga, J. (2016). Hidráulica de tuberías: Emma Ariza H.
Wameedh, T. M., Al, T., & Pierre, R. (2019). Pressure-loss coefficient of 90° sharp-angled mitre elbows. ASME Journal of Fluids Engineering.
Wichowski, Siwiec, & Kalenik. (2019). Effect of the Concentration of Sand in a Mixture of Water and Sand Flowing through PP and PVC Elbows on the Minor Head Loss Coefficient. Water, 11(4). doi:10.3390/w11040828
Yambombo, J. (2012). Diseño y construcción de un banco de pruebas para ensayos de pérdidas de carga en tuberías y accesorios. Universidad Central del Ecuador, Ecuador.
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