UIS Ingenierias最新文献

{"title":"Propulsión eléctrica a partir de celdas de hidrógeno: impacto en mitigación de huella de carbono","authors":"Marcela Patricia Arrieta García, Adriana Milena Castaño Padilla, Alejandro Luis Olivera Ruiz","doi":"10.18273/revuin.v22n2-2023004","DOIUrl":"https://doi.org/10.18273/revuin.v22n2-2023004","url":null,"abstract":"El aumento de la temperatura global, como consecuencia de las emisiones de gases de efecto invernadero, sigue siendo una de las principales preocupaciones que ha provocado un profundo interés en la implementación del hidrógeno como fuente de generación de energía eléctrica, por lo que en el mercado se han desarrollado y están disponibles tecnologías de celdas de combustible de hidrógeno para mitigar las emisiones de CO2 generadas por el uso de combustibles fósiles. En este artículo, se describe la metodología empleada para el diseño de un sistema de propulsión eléctrica con suministro de energía a partir de una celda de combustible de hidrógeno en un Buque de Apoyo Logístico y de Cabotaje Liviano - BALC-L. El diseño actual del buque cuenta con una propulsión convencional con dos motores diésel de 224 bkW cada uno y dos generadores diésel de 99 ekW cada uno, como base para la propuesta de un análisis de un sistema de propulsión eléctrica energizado a través de un sistema de celdas de combustible de hidrógeno. Como resultado, se propone un cambio en el perfil operativo del buque y una reducción de las emisiones de CO2 a lo largo de su ciclo de vida útil. La investigación descrita en este documento es un punto de partida para la implementación de estas tecnologías en la industria marítima y fluvial en Colombia.","PeriodicalId":42183,"journal":{"name":"UIS Ingenierias","volume":" ","pages":""},"PeriodicalIF":0.3,"publicationDate":"2023-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42419906","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pirólisis del tereftalato de polietileno y poliestireno para la síntesis de nanoestructuras de carbono: una revisión bibliométrica","authors":"Katerine Ordoñez Agredo, Diego Fernando Coral Coral, Jorge Enrique Rodríguez Páez, Jesús Evelio Diosa Astaiza, Edgar Eduardo Mosquera Vargas","doi":"10.18273/revuin.v22n2-2023003","DOIUrl":"https://doi.org/10.18273/revuin.v22n2-2023003","url":null,"abstract":"Este artículo se presenta una revisión bibliométrica del proceso de pirólisis de dos tipos de polímeros: tereftalato de polietileno y poliestireno (PET y PS, por sus siglas en inglés), para identificar las condiciones necesarias y así optimizar el proceso de pirólisis, garantizando la producción mayoritaria del producto gaseoso con el objetivo de llevar a cabo un segundo proceso, el crecimiento de nanoestructuras de carbono. Precursores gaseosos como el metano, acetileno y etileno son hidrocarburos esenciales para el crecimiento de dichas nanoestructuras, de las que se destacan según la literatura, una variedad de nanotubos de carbono de pared simple, de pared doble, y de pared múltiple (SWCNT, DWCNT y MWCNT, por sus siglas en inglés) y nano fibras de carbono (CNF, por sus siglas en inglés). En este trabajo se realiza un análisis de las condiciones más relevantes para optimizar el proceso de pirólisis de polímeros, es decir, disminuir la temperatura y tiempos de reacción y mejorar la composición de los productos obtenidos del proceso pirolítico. Finalmente se dan a conocer los reportes más relevantes de la pirolisis de los polímeros expuestos en la literatura.","PeriodicalId":42183,"journal":{"name":"UIS Ingenierias","volume":" ","pages":""},"PeriodicalIF":0.3,"publicationDate":"2023-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45958128","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Systematic overview of nanocomposites obtained by VAT photopolymerization techniques: A cost and life cycle assessment approach","authors":"L. Gil, Italo de-Camargo, Elkin I. Gutiérrez-Velásquez, H. Colorado","doi":"10.18273/revuin.v22n1-2023008","DOIUrl":"https://doi.org/10.18273/revuin.v22n1-2023008","url":null,"abstract":"Additive manufacturing has shown advantages for nanocomposite fabrication. Despite VAT-photopolymerization being one of the first developed 3D printing technologies, high device costs made it a technology that was difficult to access. The massive production of these devices in recent years has opened this technology to everyone. Stereolithography and Digital light processing are the most prominent technologies used in this field. This systematic review studied 217 articles regarding SLA and DLP for additive manufacture of nanocomposites. The main finding of this systematic review shows that further research on circular economy and life cycle assessment of the SLA and DLP technologies is urgently needed. Also, a deeper discussion on the technology and material costs is recommended in order to give a more detailed insight on the final cost of these 3D-printed nanocomposites.","PeriodicalId":42183,"journal":{"name":"UIS Ingenierias","volume":" ","pages":""},"PeriodicalIF":0.3,"publicationDate":"2023-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42878001","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influencia de las bacterias en la autocuración del concreto","authors":"S. Muñoz-Pérez, Jorge Carlos-Sánchez, Miguel Peralta-Sánchez","doi":"10.18273/revuin.v22n1-2023007","DOIUrl":"https://doi.org/10.18273/revuin.v22n1-2023007","url":null,"abstract":"El presente documento contempla una reflexión crítica de los avances tecnológicos en ensayos biológicos y químicos que es sometido el concreto mediante la incorporación de bacterias, con el objetivo de conocer los distintos elementos microbianos que poseen propiedades de biomineralización capaces de realizar la autocuración en el concreto, asimismo, se revisaron métodos y aplicaciones de las bacterias en el concreto con el fin de mejorar sus propiedades mecánicas a las diferentes exigencias sometidas las estructuras modernas, y al mismo tiempo contribuir con la reducción de gases dañinos al medio ambiente. En el desarrollo de este manuscrito se revisaron 80 artículos indexados entre los años 2017 al 2021 distribuidos de la siguiente manera, 51 en Scopus, 17 en Ebsco, y 12 en SciencieDirect, señalando y describiendo que el concreto microbiano tiene un enfoque prometedor en un futuro cercano. Los resultados alcanzados con la incorporación de las diferentes bacterias de Bacillus, como son Bacillus subtillis, B, cohnii, B. pasteurii, B. pseudofirmus, B. megaterium entre otros, en diferentes concentraciones de células/ml., mostraron gran efectividad en la cicatrización de grietas, aumentando también la resistencia a la compresión, flexión y tracción en el concreto. Sobre la base de la revisión literaria se concluye que la precipitación microbiana de carbonato de calcio mediante ureólisis en la matriz del concreto, mitiga el agrietamiento, mejora la resistencia, aumenta la durabilidad y, por lo tanto, disminuye los costes en reparación de las estructuras.","PeriodicalId":42183,"journal":{"name":"UIS Ingenierias","volume":" ","pages":""},"PeriodicalIF":0.3,"publicationDate":"2023-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45998510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Heat flow and specific heat capacity in the dehydration stage of biomasses pyrolysis through thermal analyses","authors":"Fernanda Rezende-Lopes, K. Tannous, Thiago Rezende-Lopes","doi":"10.18273/revuin.v22n1-2023006","DOIUrl":"https://doi.org/10.18273/revuin.v22n1-2023006","url":null,"abstract":"This study aims to investigate the influence of the moisture of energy cane and coconut fiber on heat flow and specific heat capacity in the dehydration stage from the pyrolysis process. The experiments were carried out in a simultaneous thermogravimetry and differential scanning calorimetry analyzer using a heating rate of 20 K/min in an inert atmosphereThree decomposition stages were identified: dehydration (marked by an expressive endothermic peak), pyrolysis, and carbonization). From the analyses of the water contributions, it was observed that the heat flow from the heat capacity of remaining water (Qwc) is negligible compared to the heat flow from the water evaporation (Qwe), for both biomasses. Also, we calculated the heat flow from the heat capacity (Qb) and the experimental specific heat capacity (cp,b) of biomasses such as 686-2371 J/kg K and 1076-2113 J/kg K, respectively. Then, for the dehydration stage, third- and fourth-order theoretical polynomial equations have been proposed to predict the heat required for the biomass heating.","PeriodicalId":42183,"journal":{"name":"UIS Ingenierias","volume":" ","pages":""},"PeriodicalIF":0.3,"publicationDate":"2023-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45149693","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Toluene hydrogenation and ring-opening on bimetallic Pd-Pt/HY catalysts","authors":"T. Romero, L. Melo, María Esparragoza, Rosarmy Ávila, A. Moronta, G. Carruyo, L. García, C. Donoso, Laura Sáenz, Carlos Yugcha-Pilamunga","doi":"10.18273/revuin.v22n1-2023003","DOIUrl":"https://doi.org/10.18273/revuin.v22n1-2023003","url":null,"abstract":"Bimetallic Pd-Pt/HY catalysts prepared by the co-impregnation method with an atomic variation of Pd/Pd+Pt were studied to convert toluene and methylcyclohexane. The catalysts were characterized by the BET method, chemisorption of CO by the pulse method, programmed temperature reduction (H2-TPR), and programmed ammonia thermo-desorption (NH3TPD). Results of chemisorption of CO and H2-TPR for Pd-Pt/HY catalysts suggest the existence of a strong interaction between Pd and Pt. The NH3-TPD showed that incorporating metals influences the percentage of relative distribution of weak/strong acid sites presented in decreasing order of acidity: Pd0Pt100/HY>Pd100Pt0/HY>Pd33Pt67/HY. Atomic composition Pd/Pd+Pt equal to 0.33, and relative distribution of weak/strong acid sites equal to 2, favor hydrogenation of toluene to methylcyclohexane in metal sites and subsequent skeletal isomerization in the acidic sites through dimethylcyclopentane intermediate and ring-opening in the metal sites, leading to increased formation of n-heptane relative to iso-heptane. Bimetallic Pd-Pt/HY catalysts prepared by the co-impregnation method with an atomic variation of Pd/Pd+Pt were studied to convert toluene and methylcyclohexane. The catalysts were characterized by the BET method, chemisorption of CO by the pulse method, programmed temperature reduction (H2-TPR), and programmed ammonia thermo-desorption (NH3TPD). Results of chemisorption of CO and H2-TPR for Pd-Pt/HY catalysts suggest the existence of a strong interaction between Pd and Pt. The NH3-TPD showed that incorporating metals influences the percentage of relative distribution of weak/strong acid sites presented in decreasing order of acidity: Pd0Pt100/HY>Pd100Pt0/HY>Pd33Pt67/HY. Atomic composition Pd/Pd+Pt equal to 0.33, and relative distribution of weak/strong acid sites equal to 2, favor hydrogenation of toluene to methylcyclohexane in metal sites and subsequent skeletal isomerization in the acidic sites through dimethylcyclopentane intermediate and ring-opening in the metal sites, leading to increased formation of n-heptane relative to iso-heptane.","PeriodicalId":42183,"journal":{"name":"UIS Ingenierias","volume":" ","pages":""},"PeriodicalIF":0.3,"publicationDate":"2023-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41583013","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pattern recognition for the modification of characteristics using non-linear techniques","authors":"F. Mesa, R. Ospina-Ospina, D. M. Devia-Narvaez","doi":"10.18273/revuin.v22n1-2023002","DOIUrl":"https://doi.org/10.18273/revuin.v22n1-2023002","url":null,"abstract":"Traditional data processing applications are unsuitable for handling large amounts of data. To achieve an efficient manipulation and extraction of characteristics or samples that the information represents, it is necessary to know aspects such as data collection and treatment. In this document, a database corresponding to the behavior of electrical energy consumption in a residential load was refined. The debugging and statistical analysis of the samples were carried out using the principal component analysis. The training of the smallest data set to the original database was made using vector support machine techniques and artificial neural networks. Finally, a proposal is presented for the analysis of samples that are within the operating limits or not using updating dynamic patterns for the unsupervised validation of new samples.","PeriodicalId":42183,"journal":{"name":"UIS Ingenierias","volume":"1 1","pages":""},"PeriodicalIF":0.3,"publicationDate":"2023-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41461661","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Methodology for the structural analysis of a main deck of FPSO vessel supporting an offshore crane","authors":"D. F. Hernández-Ménez, I. Félix-González, J. Hernández-Hernández, A. Herrera-May","doi":"10.18273/revuin.v22n1-2023001","DOIUrl":"https://doi.org/10.18273/revuin.v22n1-2023001","url":null,"abstract":"Offshore cranes placed on the surface of Floating Production Storage and Offloading (FPSO) vessels affect the structural response of their main decks, which can alter the safe operation of the FPSO vessels. Generally, classification societies rules are used to predict the structural strength of the main deck of FPSO vessels. However, these classification societies rules are limited to estimate the variation of the structural performance of the main deck caused by the operation of offshore cranes under different hydrodynamic conditions. Here, we present a methodology to determine the alteration of the structural behavior of a main deck of FPSO vessel due to different operation conditions of a board offshore crane. This methodology considers the hydrodynamic response for two ultimate limit states: operating and storm conditions from 1000 m water depth in Gulf of Mexico with a return period of 10 and 100 years, respectively. The methodology includes finite element method (FEM) models of the main deck supporting an offshore crane to predict its structural response. The maximum von Mises stress of the main deck does not overcome its maximum permissible stress, which allows a safe operation of the FPSO crane. The proposed methodology can be used to estimate the structural behavior of main decks of FPSO vessels that are modified for supporting offshore cranes, regarding the hydrodynamic response for each FPSO under the operation and extreme conditions in its location. Thus, naval designers could select the better structural modifications of the main decks that decrease their costs of construction and maintenance.","PeriodicalId":42183,"journal":{"name":"UIS Ingenierias","volume":" ","pages":""},"PeriodicalIF":0.3,"publicationDate":"2022-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48241866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Deposición de láser pulsado de hidroxiapatita en Ti-6Al-4V producido por manufactura aditiva","authors":"Estefanía Corredor, O. A. González-Estrada, Rogelio Ospina-Ospina","doi":"10.18273/revuin.v21n4-2022010","DOIUrl":"https://doi.org/10.18273/revuin.v21n4-2022010","url":null,"abstract":"En este trabajo, se estudiaron las propiedades mecánicas, composición química y la morfología superficial de recubrimientos de hidroxiapatita, depositados mediante deposición por láser pulsado sobre sustratos de Ti6Al4V fabricados por electron beam melting, variando la energía de deposición. Los ensayos de microindentación e indentación realizados de acuerdo con la norma ASTM E384-17, permitieron obtener valores de dureza y microdureza promedios. Para la evaluación de las propiedades del recubrimiento del sustrato se empleó microscopia electrónica de barrido, obteniendo así valores promedio de tamaño de formación de partículas de hidroxiapatita del recubrimiento. La composición química se obtuvo del análisis por espectroscopia de rayos X por energía dispersiva. Se evaluaron características importantes que indican la incidencia de los parámetros de deposición con respecto a las propiedades mecánicas, morfológicas y composición química del recubrimiento biocompatible sobre partes producidas mediante manufactura aditiva para su uso en implantes óseos.","PeriodicalId":42183,"journal":{"name":"UIS Ingenierias","volume":" ","pages":""},"PeriodicalIF":0.3,"publicationDate":"2022-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46692140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Estimación de la producción de lodos en plantas convencionales de tratamiento de agua potable mediante modelos de predicción","authors":"P. Torres-Lozada, Luis Ancizar Arango-Vallejo, Wilmar Alexander Torres-López","doi":"10.18273/revuin.v21n4-2022008","DOIUrl":"https://doi.org/10.18273/revuin.v21n4-2022008","url":null,"abstract":"El tratamiento de agua para consumo humano en plantas de tratamiento de agua potable (PTAP) convencionales, genera lodos que se retienen principalmente en la etapa de sedimentación y para hacer un manejo adecuado es importante conocer las cantidades producidas. Para aportar a este fin, en este estudio se evaluaron diferentes modelos empíricos (AFEE, Cornwell & Koppers, Coşkun, CETESB, AWWA y Kawamura) y estocásticos (ARIMA) para la predicción de la producción de lodos de una PTAP convencional que utiliza sulfato de aluminio como coagulante. Entre los modelos empíricos, los tres primeros presentaron un mejor ajuste frente a los datos observados; sin embargo, el estocástico ARIMA (0,1,2) fue el de mejor predicción con una diferencia de 1.51% entre el valor pronosticado y el observado (2173,65 ± 549 vs 2207 Kg / día de lodos en base seca), lo que demuestra su aplicabilidad para estimar la producción de lodos.","PeriodicalId":42183,"journal":{"name":"UIS Ingenierias","volume":" ","pages":""},"PeriodicalIF":0.3,"publicationDate":"2022-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48137956","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}