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Energy and Exergy Analysis in a Centrifugal Pump Driven by a Diesel Engine Using Soybean Biodiesel and Mixtures with Diesel
Análisis de energía y exergía en una bomba centrífuga accionada por un motor diésel con biodiésel de soja y mezclas con diésel
DOI:
https://doi.org/10.15446/ing.investig.88228Keywords:
Soybean biodiesel, Centrifugal pump, Energy, Exergy, Sustainability (en)biodiésel de soja, bomba centrífuga, energía, exergía, sustentabilidad (es)
Soybean biodiesel and mixtures with diesel are used as fuel in a diesel engine that drives a centrifugal pump. The consumption useful work rate, the reversible work rate and the efficiency of the second law of thermodynamics were calculated using an energetic and exergetic analysis. The soybean biodiesel was produced using ethanol in the proportion of 33% v/v and the catalyst NaOH (1%), obtaining a yield of 90,63%. The fuels used were diesel (B0); 25% soybean biodiesel and 75% diesel (B25); 50% soybean biodiesel and 50% diesel (B50); 75% soybean biodiesel and 25% diesel (B75) and soybean biodiesel (B100). The properties density and kinematic viscosity were within the established limits of the National Agency of Petroleum, Natural Gas and Biofuels. A value of 39017 kJ.kg-1 was obtained, for the higher heating value of the soybean biodiesel (B100). It was obtained 32,05% of maximum efficiency of the second law, in the case of soybean biodiesel, at maximum pump speed and at 9,2 m3/h. For the B50 fuel, it was obtained 29,78% of maximum efficiency of the second law when the centrifugal pump operated at 2733 rpm and at a maximum flow rate.
El biodiésel de soja y las mezclas con diésel se utilizan como combustible en un motor diésel que impulsa una bomba centrífuga. La tasa de trabajo útil de consumo, la tasa de trabajo reversible y la eficiencia de la segunda ley de la termodinámica se calcularon mediante un análisis energético y exergético. El biodiesel de soja se produjo utilizando etanol en la proporción de 33% v/v y el catalizador NaOH (1%), obteniendo un rendimiento de 90,63%. Los combustibles utilizados fueron: diesel (B0); 25% de biodiésel de soja y 75% de diésel (B25); 50% biodiésel de soja y 50% diésel (B50); 75% biodiésel de soja y 25% diésel (B75) y biodiésel de soja (B100). Las propiedades densidad y viscosidad cinemática estuvieron dentro de los límites establecidos por la Agencia Nacional de Petróleo, Gas Natural y Biocombustibles. Se obtuvo un valor de 39017 kJ.kg-1, para el mayor poder calorífico del biodiesel de soja (B100). Se obtuvo 32,05% de eficiencia máxima de la segunda ley, en el caso del biodiésel de soja, a máxima velocidad de bombeo ya 9,2 m3/h. Para el combustible B50, se obtuvo 29,78% de eficiencia máxima de la segunda ley cuando la bomba centrífuga operó a 2733 rpm y al caudal máximo.
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1. Yaroslav Tsytsiura. (2023). EVALUATION OF OILSEED RADISH ( Raphanus sativus L. var. oleiformis Pers.) OIL AS A POTENTIAL COMPONENT OF BIOFUELS. Engenharia Agrícola, 43(spe) https://doi.org/10.1590/1809-4430-eng.agric.v43nepe20220137/2023.
2. Oscar Hernando Venegas-Pereira, Luisa Fernanda Mónico-Muñoz. (2025). Physical and chemical properties using commercial diesel and palm oil biodiesel blends. Revista Facultad de Ingeniería Universidad de Antioquia, https://doi.org/10.17533/udea.redin.20250258.
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