Ingeniería, Energía, Exergía y Sostenibilidad (IEXS)

URI permanente para esta comunidad

https://hdl.handle.net/10784/28127

El objetivo de este equipo interdisciplinario es la gestión de las actividades de investigación, diseño, desarrollo e innovación asociadas a los procesos de transformación energéticos y su calidad, para satisfacción de necesidades energéticas de las empresas y de la población en general, en los ámbitos local, regional, nacional e internacional, con sostenibilidad y cuidado del medio ambiente.

Líneas de investigación: Educación en ingeniería, energía, exergía y sostenibilidad; Fuentes de energía: renovables y no renovables; Ingeniería y sostenibilidad; Procesos de transformación, transporte, distribución y almacenamiento de energía; Uso y manejo de la energía en forma sostenible.
Código Minciencias: COL0107815.
Categoría 2019: A.
Escuela: Ingeniería.
Departamento académico: Ingeniería de Producción.
Coordinadora: Carlos Arturo Rodriguez Arroyave.
Correo electrónico: carodri@eafit.edu.co

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Mostrando 1 - 20 de 23

Vision 3-D with images 2-D, by mediate the analysis of shades for the illumination angle with the surface
(SPIE-INT SOC OPTICAL ENGINEERING, 2001-08-14) Diaz, AG; Universidad EAFIT. Departamento de Ingeniería de Producción; Ingeniería, Energía, Exergía y Sostenibilidad (IEXS)
This paper deals with the presentation of an algorithm for acquisition and processing of images, in order to obtain information of topologic aspects in a 3D surface, starting from 2D images, by means of the analysis of the shine of the risings of the surface, when this is illuminated by light sources in oblique direction. In the surface, some areas of shine appear corresponding to the areas of the rising surfaces with slopes in front of the illumination source, and shade areas corresponding to the sinking of the surfaces. When obtaining several images of the same area, by illuminating the opposite sides and by realizing operations with them, it is obtained information on the geometry and situation of the relief elements, like elevations and depths of the surface. On this basis a novel algorithm has been developed for the detection of the situations and characteristics of the threads in structures of plane textures, in the process of detection of textile shortcomings.
Visión 3-D de rugosidades en superficies, bajo el principio de imágenes de sombras, en Aplicación Textil
(Fondo Editorial Universidad EAFIT, 2003-04-01) DIAZ, ADALBERTO GABRIEL; DIAZ, ADALBERTO GABRIEL; Universidad EAFIT. Departamento de Ingeniería de Producción; Ingeniería, Energía, Exergía y Sostenibilidad (IEXS)
Simultaneous Fluorometric Determination of Chlorophylls a and b and Pheophytins a and b in Olive Oil by Partial Least-Squares Calibration
(AMER CHEMICAL SOC, 2003-11-19) Diaz, TG; Meras, ID; Correa, CA; Roldan, B; Caceres, MIR; Diaz, TG; Meras, ID; Correa, CA; Roldan, B; Caceres, MIR; Universidad EAFIT. Departamento de Ingeniería de Producción; Ingeniería, Energía, Exergía y Sostenibilidad (IEXS)
The resolution of quaternary mixtures of chlorophylls a and b and pheophytins a and b has been accomplished by partial least-squares (PLS) multivariate calibration, applied to the fluorescence signals of these pigments. The total luminescence information of the compounds has been used to optimize the spectral data set to perform the calibration. After preliminary studies, a method is described in acetone media, to avoid emulsions with the olive oil samples. Different scanning paths have been selected for each method. For the simultaneous determination of the pigments in olive oil samples, a comparative study of the results found by using excitation, emission, and synchronous spectral data, as analytical signal, was performed. The excitation spectra were selected as the better analytical signals for the determination of the pigments in olive oil samples. The optimum wavelength range to record the excitation spectra (?em = 662 nm) was selected to minimize the contribution of pheophytin a and to maximize the contribution of the other pigments, which are the minor constituents in olive oil. Determination of these pigments in olive oil samples was effected from the excitation spectra of dissolutions o suitable aliquots in acetone. Recovery values from olive oil, spiked with chlorophylls a and b and pheophytins a and b, were in the ranges of 70-112, 71-111, 76-105, and 82-109%, respectively.
La flexibilización de la oferta académica mejora la calidad del aprendizaje
(2006-10-01) DIAZ, ADALBERTO GABRIEL; DIAZ, ADALBERTO GABRIEL; Universidad EAFIT. Departamento de Ingeniería de Producción; Ingeniería, Energía, Exergía y Sostenibilidad (IEXS)
Análisis de estructuras periódicas con descripción de fourier y redes neuronales
(IMPRENTA UNIV ANTIOQUIA, 2007-06-01) DIAZ, ADALBERTO GABRIEL; DIAZ, ADALBERTO GABRIEL; Universidad EAFIT. Departamento de Ingeniería de Producción; Ingeniería, Energía, Exergía y Sostenibilidad (IEXS)
Analysis of periodic structures with Fourier description and neuronal network
(IMPRENTA UNIV ANTIOQUIA, 2007-06-01) DIAZ, ADALBERTO GABRIEL; Gabriel Diaz, Adalberto; Universidad EAFIT. Departamento de Ingeniería de Producción; Ingeniería, Energía, Exergía y Sostenibilidad (IEXS)
This work is developed in a project of textile lattices inspection. The structure of a superficial texture is manifested with a behavior on the base of a model known as pattern which, is associated with a group of characteristics that define it as such. The identification process and classification of shortcomings in the texture consists on establishing a region of conformity in the coordinated space defined by the pattern's characteristics. The reduction process of this m-dimensional space, helps to its identification in an n-dimensional space, such that m > n, where the classification system actually depends on the characteristics of the new space, where the new characteristics truly contain the classification information. The space characteristics allow for the identification of the pattern as such in the place that is explored. The characteristic frequency corresponds to a reduction of the classification space, making it more generic in the area over the image. The classification system is modeled with neuronal networks algorithms and the complexity of the surfaces of decision is solved starting from the architecture and the algorithms of training of the neuronal net.
III Congreso Internacional sobre Diseño de Procesos y Productos
(Fondo Editorial Universidad EAFIT, 2011-10-14) Acosta, Diego A.; Gil Pavas, Edison; MOLINA, KEVIN GIOVANNI; ESCOBAR, JAIME ALBERTO; Acosta, Diego A.; Gil Pavas, Edison; MOLINA, KEVIN GIOVANNI; ESCOBAR, JAIME ALBERTO; Universidad EAFIT. Departamento de Ingeniería de Producción; Ingeniería, Energía, Exergía y Sostenibilidad (IEXS)
Modelo Matemático de un Motor de Combustión Interna para uso en Control
(2012-01-01) Hernandez, Monica; Díaz Torres, A.G.; Lucia Quintero M, O.; Hernandez, Monica; Díaz Torres, A.G.; Lucia Quintero M, O.; Universidad EAFIT. Departamento de Ingeniería de Producción; Ingeniería, Energía, Exergía y Sostenibilidad (IEXS)
Se obtiene el modelo matemático orientado al control de un motor de combustión interna anclado a un banco de pruebas. El modelo exige aplicación de ecuaciones de primeros principios y estimación de parámetros.
Propiedades físicas y mecánicas de granos de Jatropha curcas cultivadas en Colombia
(IMPRENTA UNIV ANTIOQUIA, 2014-01-01) Betancur-Prisco, J.C.; Mira-Hernández, C.; París-Londoño, L.S.; Betancur-Prisco, J.C.; Mira-Hernández, C.; París-Londoño, L.S.; Universidad EAFIT. Departamento de Ingeniería de Producción; Ingeniería, Energía, Exergía y Sostenibilidad (IEXS)
Biodiesel from Jatropha curcas seeds is one promissory option in the biofuels field. This is a crop that develops in tropical countries which can grow on marginal soils with low irrigation and helps to control the erosion. This bush grows quickly and produces seeds with approximately 35% oil content and it does not compete with food crops. However, for the production of biodiesel from Jatropha to be sustainable and profitable it is required research and technological development at all stages of the production chain. This articleshows the results of a research process that aims the determination of some significant physical and mechanical characteristics of Jatropha curcas seeds. This data are important, because they provide necessary information in the design of equipment and processes for Jatropha curcas oil production; especially, for mechanical oil extraction. As a result of the research process different properties were determined, for example: compression (2.8 mm) and energy (332 N.mm) required for fracture, average dimensions of seeds (length: 10.8 mm/width: 17.8 mm/thickness: 8.6 mm), fractions of shell (38%) and albumen (62%) in the seed, moisture content of seed (5.2%), oil content (29%), calorific value of shell (0.3 MJ/kg) and albumen (0.8 MJ/kg). All these variables are important parameters in the design of equipment, but also are useful to evaluate alternative uses for by-products of the oil extraction process, for example as energy source. Besides, the available information in Colombia about Jatropha is not much.
Design of a competences based teaching model supported in the integration of repositories and LMS platforms for the Automatic Control of Processes course.
(IEEE, 2014-01-01) Gomez G, Isabel Cristina; Diaz T, Adalberto Gabriel; Zea R, Claudia Maria; Zapata R, Luis Felipe; Universidad EAFIT. Departamento de Ingeniería de Producción; Ingeniería, Energía, Exergía y Sostenibilidad (IEXS)
The Automatic Process Control course is part of the Mechanical Engineering, Process Engineering and Production Engineering programs, offered by EAFIT University (Medellin, Colombia). This course has had a number of reforms in recent years, from two academic spaces to one that contains all the content and features them from theoretical and practical components. With this transformation, was generated the need to reduce the time commitment to each of the thematic, causing learning issues in students. For this reason, we have proposed a new reform in the course through the implementation of a content management model based on competences and supported by the integration of repositories and LMS platforms. This model seeks to train students in the skills defined by the courses and because of this, it is important that the learning process provide mechanisms to validate the skill level of each student, taking into account the outcome of the validation should correspond directly to the skills acquired in the training process. To support this model, there are technological tools as platforms for learning management and learning object repositories that support the online teaching and learning processes, and support the use of standards, generating interoperability, reusability, adaptability and scalability content.
Innovation and creativity in process control and manufacturing
(Springer-Verlag France, 2014-12-01) DIAZ, ADALBERTO GABRIEL; DIAZ, ADALBERTO GABRIEL; Universidad EAFIT. Departamento de Ingeniería de Producción; Ingeniería, Energía, Exergía y Sostenibilidad (IEXS)
Design of a competences based teaching model supported in the integration of repositories and LMS platforms for the automatic control of processes course
(Institute of Electrical and Electronics Engineers Inc., 2015-01-01) Gomez, G.I.C.; Diaz, T.A.G.; Zea, R.C.M.; Zapata, R.L.F.; Universidad EAFIT. Departamento de Ingeniería de Producción; Ingeniería, Energía, Exergía y Sostenibilidad (IEXS)
The Automatic Process Control course is part of the Mechanical Engineering, Process Engineering and Production Engineering programs, offered by EAFIT University (Medellin, Colombia). This course has had a number of reforms in recent years, from two academic spaces to one that contains all the content and features them from theoretical and practical components. With this transformation, was generated the need to reduce the time commitment to each of the thematic, causing learning issues in students. For this reason, we have proposed a new reform in the course through the implementation of a content management model based on competences and supported by the integration of repositories and LMS platforms. This model seeks to train students in the skills defined by the courses and because of this, it is important that the learning process provide mechanisms to validate the skill level of each student, taking into account the outcome of the validation should correspond directly to the skills acquired in the training process. To support this model, there are technological tools as platforms for learning management and learning object repositories that support the online teaching and learning processes, and support the use of standards, generating interoperability, reusability, adaptability and scalability content. © 2014 IEEE.
Control of emissions in an internal combustion engine: first approach for sustainable design
(Springer-Verlag France, 2016-08-01) Amaya, A.F.D.; Torres, A.G.D.; Acosta, D.A.; Amaya, A.F.D.; Torres, A.G.D.; Acosta, D.A.; Universidad EAFIT. Departamento de Ingeniería de Producción; Ingeniería, Energía, Exergía y Sostenibilidad (IEXS)
A mathematical model of emissions was developed in a Twingo D7F engine. The effects of variations in compression ratio, fuel/air equivalence ratio, spark advanced and combustion duration under pollutant emissions were studied. Analysis and data collection were performed in an engine bank using a data acquisition system integrated to an Interactive Engineering Environment. A control strategy was implemented to guarantee emissions reduction.
Diseño del proceso de extracción de aceite de sacha inchi (plukenetia Volubilis L.) con CO2 supercrítico
(Universidad Nacional de Colombia, 2016-09-21) Triana, Diana Marcela; |Torijano, Sandra Adela; Catalina Giraldo E; Triana, Diana Marcela|; Torijano, Sandra Adela; Catalina Giraldo E; Universidad EAFIT. Departamento de Ingeniería de Producción; Ingeniería, Energía, Exergía y Sostenibilidad (IEXS)
Sacha inchi (Plukenetia volubilis L.) presenta un alto contenido de proteína y aceite rico en omegas 3 (50%) y 6 (36%), lo que atribuye al aceite beneficios nutricionales y cardioprotectores previniendo enfermedades cardiovasculares...
First and second thermodynamic law analyses applied to spark ignition engines modelling and emissions prediction
(Springer-Verlag France, 2016-11-01) Duque Amaya, A.F.; Díaz Torres, A.G.; Acosta Maya, D.A.; Duque Amaya, A.F.; Díaz Torres, A.G.; Acosta Maya, D.A.; Universidad EAFIT. Departamento de Ingeniería de Producción; Ingeniería, Energía, Exergía y Sostenibilidad (IEXS)
A mathematical and numerical model of flow and combustion process for spark ignition engines is developed using the principles of the first and second law of thermodynamic. Availability (exergy) analysis is applied to cylinder of a spark ignition engine during the combustion process using a two-zone combustion model. Special attention is given to identification and quantification of irreversibility of combustion process and energy available basing on the isooctane fuel explosion. To predict emissions generation (greenhouse gases) a skeletal mechanism including 32 species and 61 reactions was developed and tested for different engine operations and exergy destructions.
Metodología Brown Paper aplicada al beneficio del caucho natural con productores del Bajo Cauca antioqueño
(Latin American and Caribbean Consortium of Engineering Institutions, 2017-01-01) Echeverry Cartagena C.; Rodriguez Arroyave C.; Gómez Quintero V.; Gomes Donadeli R.; Universidad EAFIT. Departamento de Ingeniería de Producción; Ingeniería, Energía, Exergía y Sostenibilidad (IEXS)
This paper presents the application of the Brown Paper methodology in the process of obtaining natural rubber with producers from the Colombian Bajo Cauca antioqueño region. The objective of this methodology is the standardization of the operating conditions in the associations, ASCABIA and ASCULTICAUCHO, taking into account the cleaning conditions and personal protection equipment. Other information is given for the Brown Paper methodology, showing how it was applied with the rubber farmers and detailing the results and the improvements obtained through the process. © 2017 Latin American and Caribbean Consortium of Engineering Institutions. All rights reserved.
PROTOCOLO. Protocolo de estandarizacion de los Procesos de beneficio y transformación del caucho natural
(LitoMedellin S.A, 2017-06-30) Rodriguez, C.; ESCOBAR, JAIME ALBERTO; Herrera, M.; Rodriguez, C.; ESCOBAR, JAIME ALBERTO; Herrera, M.; Universidad EAFIT. Departamento de Ingeniería de Producción; Ingeniería, Energía, Exergía y Sostenibilidad (IEXS)
Simulation NMPC in 2-HIL to design ECU
(Springer-Verlag France, 2017-11-01) Chica, J.A.V.; Torres, A.G.D.; Chica, J.A.V.; Torres, A.G.D.; Universidad EAFIT. Departamento de Ingeniería de Producción; Ingeniería, Energía, Exergía y Sostenibilidad (IEXS)
The development, testing and tuning of control systems for complex plants found hardware in the loop (HIL) technical, a perfect ally to reduce risks, costs and times redesign. HIL allows for example, in the automotive field contain an embedded system complexity nonlinear dynamics modeling the internal combustion engine, including the processes of discrete events and continuous. With the goal to represent as closely as possible the behavior of the engine, dynamics is simulated by the embedded system in real time, sensors including. On the other hand, the electronic control unit (ECU), by construction also constitutes an embedded system that the plant operates properly. Is of wide interest to optimize engine operation, and a valid opportunity, is to design ECU's that are running optimal control algorithms, such as nonlineal model predictive control (NMPC). This document is a report of the practical reliability of the implementation of a HIL simulation scheme for the design of NMPC controllers for internal combustion engine. In a RT hardware element implements the component models the nonlinear plant, in another such element is implemented and tested two NMPC optimal control algorithms: model predictive control with linearization on-line and NMPC based on sequential quadratic programming, included in the simulation loop the real actuator elements. Combined with an interface to the designer that allows actively interact with the system, evaluating an expanded field operating conditions and even bordering operating limits.
"PROGRAMA DE GESTION DEL SECTOR MOTOCICLETAS. Un caso de éxito de coopetencia, y su consolidación en la industria colombiana"
(Artes y Letras S.A.S., 2017-11-30) Rodriguez, C.; Echeverri Cartagena, Carlos; Rodriguez, C.; Echeverri Cartagena, Carlos; Universidad EAFIT. Departamento de Ingeniería de Producción; Ingeniería, Energía, Exergía y Sostenibilidad (IEXS)
NMPC controller applied to the operation of an internal combustion engine: formulation and solution of the optimization problem in real time
(Springer-Verlag France, 2018-02-01) Chica, J.A.V.; Torres, A.G.D.; Acosta Maya, Diego Andres; Chica, J.A.V.; Torres, A.G.D.; Acosta Maya, Diego Andres; Universidad EAFIT. Departamento de Ingeniería de Producción; Ingeniería, Energía, Exergía y Sostenibilidad (IEXS)
Numerical optimization solve problems efficiently where such efficiency is focused on the speed with which the optimal x* is achieved, is open line of research and strong work in the scientific community in order to achieve control systems in dynamic processes with response times of the order of milliseconds. A clear example of this, is the implementation of optimal controller’s combustion engines. For subsequent approach to the design and implementation of nonlinear model predictive control controllers, it has made a comparison of yields algorithms quadratic programming by active set with linearization restrictions, and sequential quadratic programming with single shooting technique to solve quadratic optimization problem formulation referred to a dynamic internal combustion engine of spark ignition, in embedded systems with real-time processing. © 2016, Springer-Verlag France.

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