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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Abdelkader Gourbi; Mohamed MiloudiI; Houcine Miloudi;

    In order to provide new information on hybrid photovoltaic systems, this paper presents a technical, economic, and ecological study of a hybrid PV system connected to a storage system and utilized to power a remote site. We came up with a plan of action based on the HOMER software in order to accomplish our objective. The results indicate that, in comparison to PV alone and diesel alone, the hybrid system is the optimum choice given the location selected using local resources and the characteristics of the load to be provided. In addition, the hybrid system offers various advantages over diesel alone in terms of technology, economy, and even the environment. All gas emissions are significantly reduced, and the results highlight the importance of renewable energy in reducing gas emissions. These results might assist manufacturers by providing the answers to various queries regarding this kind of installation.

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Revista Científica d...arrow_drop_down
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Revista Científica d...arrow_drop_down
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Santiago Dorrbercker Drake;

    Sobre exigencias editoriales

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Revista Científica d...arrow_drop_down
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Revista Científica d...arrow_drop_down
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
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      Article . 2015
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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Santiago Dorrbercker Drake; Alexander Fernández Correa;

    Editorial:La revista Ingeniería Energética celebra durante el año 2014, el 50 aniversario de la fundación del Instituto Superior Politécnico José Antonio Echevarría (CUAJE).Nuestra casa de altos estudios, fue inaugurada el 2 de Diciembre de 1964 por el Comandante en Jefe Fidel Castro Ruz y ha graduado durante este medio siglo, miles de estudiantes en las ramas de Ingenierías y Arquitectura ,así como, ha formado ingenieros y arquitectos de países de África, Asia y América Latina.Un número importante de los graduados del Instituto, han cursado estudios de formación profesional, y de niveles académicos afines al perfil de nuestra revista, lo que permite que desde hace más de 30 años, divulguemos resultados de trabajos de investigación, aplicación y desarrollo, en los que muchos de ellos han sido autores o coautores.En este 50 Aniversario, el Consejo Editorial de la Revista Ingeniería Energética envía un saludo cordial a nuestros seguidores a la vez que los invita a continuar publicando en nuestras páginas, ahora con visibilidad en la WOS.

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ DOAJarrow_drop_down
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    Article . 2015
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    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ DOAJarrow_drop_down
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
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      Article . 2015
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Juan Miguel Mantilla González; Diego Alexander Garzón Alvarado; Carlos Humberto Galeano Urueña;

    Recent years have shown an increasing interest in ethanol blending to gasoline fuel, as well as a rapid implementation of this kind of biofuels in countries like Colombia. Taking into account the lack of studies about performance and emissions characteristics for the local engines, and the fact that new biofuels policies are emerging using studies made for non-local conditions, a study is proposed in order to verify the real changes in those characteristics into the Colombian conditions. This article presents a performance and emission analysis when different independent variables act on two engines working with gasoline-ethanol blends up to 30 % of the latter. A set of dependent variables are introduced in order to verify the real statistical influence of independent variables. Results confirm trends reported by other authors; nevertheless, these tendencies are not always statistical representative, like in the case of ethanol concentration influence on combustion duration.Los últimos años han mostrado un creciente interés en la mezcla gasolina-alcohol, así como una rápida implementación de este tipo de biocombustible en países como Colombia. Tomando en cuenta la falta de estudios sobre desempeño y emisiones para los motores locales, y el surgimiento de nuevas políticas utilizando como soporte estudios realizados en otros países, se propone verificar los cambios reales sobre esas características para las condiciones Colombianas. Este artículo presenta un análisis de desempeño y emisiones cuando diferentes variables independientes actúan sobre dos motores de combustión interna que trabajan con gasolina-etanol, con hasta 30 % en volumen de este último. Un grupo de variables dependientes es introducido para verificar la verdadera significancia estadística sobre las variables independientes. Los resultados confirman las tendencias reportadas por otros autores; sin embargo, estas tendencias no son siempre estadísticamente representativas, como el caso de la influencia de la concentración de etanol sobre la duración de la combustión.

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Revista Científica d...arrow_drop_down
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    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Revista Científica d...arrow_drop_down
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Dr. Santiago Dorrbercker Drake; Dr. Alexander Fernández Correa;
    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ DOAJarrow_drop_down
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    Article . 2014
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    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ DOAJarrow_drop_down
      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
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      Article . 2014
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Amadou Koulibaly; Juan José González Bayón;

    En este trabajo es desarrollada la modelación de un colector solar plano para calentamiento de aire operado con convección natural. El análisis del colector mediante balances de masa y energía no estacionarios aplicados a cada uno de los elementos componentes del colector permitió desarrollar un programa en Visual Basic que simula el comportamiento dinámico del colector ante variaciones de las condiciones de operación y variaciones de los parámetros de diseño (dimensiones del colector, tipo de material de cubierta y dimensiones, material de la placa absorbedora y sus dimensiones, eficiencia óptica y tipo y espesor de aislamiento). Los resultados muestran que el software puede ser empleado para el diseño de colectores para calentamiento de aire, además de poder ser empleado para obtener las temperaturas de cada componente del colector y el rendimiento térmico instantáneo. El software también ofrece los elementos para determinar la constante de tiempo que caracteriza la dinámica del colector.In this paper the modeling of a flat solar collector for air heating was developed. This collector works with natural convection. The analysis of the collector was made using unsteady mass and energy balances applied to each component of collector. The equations were solved usinga Visual Basic code with the target to simulate the dynamics performance of the collector when the operating conditions and the design parameters are modified. The dimensions of the collector, the material and dimensions of the covert, the material and dimensions of the absorber plate, the optic efficiency and the type and thin of the insulator are the fundamentals design parameters that can be varied. The results of the simulation show that the software can be used for the design of collectors for heating air. Additionally, the software permits to determine the temperature of each component, the instantaneous efficiency of the collector and offers the elements to obtain the time constant that characterize collector dynamics.

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ DOAJarrow_drop_down
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    Article . 2015
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    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ DOAJarrow_drop_down
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      Article . 2015
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
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    Authors: Marta Elena Bravo de las Casas; Pedro Vicente Ruíz Sánchez;

    La línea de 110 kV Santa Clara – La Moza, ubicada en medio de la línea de enlace entre la hidroeléctrica Robustiano León (Hanabanilla) y la subestación Santa Clara 110 kV, es de gran importancia teniendo en cuenta que de la misma se obtiene la derivación de donde se alimenta la Subestación de 110/13,8 kV Gran Panel de nuevo tipo. La misma cuenta con un mecanismo de reenganche trifásico el cual no realiza de forma exitosa sus funciones, lo que trae afectaciones y dificultades a la hora de restablecer el sistema. En este trabajo se analizan las condiciones de operación de la región, así como la problemática de las automáticas instaladas proponiendo soluciones con el objetivo de lograr una operación eficaz ante las averías, sin que la hidroeléctrica Hanabanilla se pierda del Sistema Eléctrico Nacional y que no se pierda el suministro de energía eléctrica a la subestación Gran Panel.The 110 kV line Santa Clara –La Moza, which is located in the middle of the line of link between the hydroelectric Robustiano León (Hanabanilla) and the substation Santa Clara 110 kV, is of great importance considering that of the same one obtains the derivation where new type Gran Panel Substation 110/13,8 feeds.Ithas athree-phasereclosingmechanismwhichdoes not performhis dutiessuccessfully, which brings affectationsanddifficultythe moment of restoringthe system. In this work, the operating conditions of the region are discussed, as well as the problem of the automatics installed, and is proposing solutions in order to ensure effective operation before faults, without that the Hanabanilla hydroelectric loses the syncrhronism with the Electrical National System and supply the substation Gran Panelis not lost.

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Revista Científica d...arrow_drop_down
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    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
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      image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Revista Científica d...arrow_drop_down
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      Article . 2015
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    Authors: Jorge Enrique Carrión González; Raúl Nicolás Carvajal Pérez;

    El Ministerio de Electricidad y Energía Renovable de Ecuador (MEER) está implementando el plan nacional de coccióneficiente, en el país y en la región Sur. El plan se basa en reemplazar las cocinas que usan gas licuado de petróleo (GLP)por cocinas eléctricas de inducción, estos cambios representan un aumento considerable en la demanda eléctrica delsector residencial. Los estudios de los sistemas eléctricos de distribución realizados permiten evaluar el comportamientoactual de las redes eléctricas y analizar futuros escenarios para poder determinar las mejoras de carácter técnico yorganizativo que deben introducirse. Seelaboró un algoritmo genético especializado para evaluar el efecto querepresenta en los transformadores de distribución la introducción masiva de las cocinas de inducción, con vistas aresolver el problema de un crecimiento brusco de la demanda de energía, minimizando los costos de inversión en nuevosequipos de transformación.The Ministry of Electricity and Renewable Energy of Ecuador (MEER) is implement in the national plan for efficient cooking in thesouthern region and the country. The planes based on replacing kitchens using liquefied petroleum gas (LPG) for induction cookers,representing an increase in electricity demanding the residential sector. Studies of electrical distribution systems made it possible toassess the current behavior of electrical networks and analyze future scenarios to determinism provident in technical and organizationalmeasures to be introduced. A genetic algorithm to evaluate the effect on distribution transformer soft he massive introduction ofinduction cookers, with view to resolving the problem of sharp growthin demand for energy while minimizing the costs of investment innew equipment was developed.

    image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Revista Científica d...arrow_drop_down
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    Authors: Ignat Pérez Almirall; Daniella Cibele Bezerra; Edson Guedes da Costa; Miguel Castro Fernández;

    En el presente trabajo se realiza un estudio sobre la influencia que tiene el uso conjunto de la nanosílice y la ATH como cargas en la goma de silicona vulcanizada a temperatura ambiente que se emplea actualmente en el aislamiento externo para cubrir aisladores de porcelana o vidrio. Este estudio se realiza comparando recubrimientos de silicona vulcanizada a temperatura ambiente que contienen como cargas conjuntamente nanosílice y ATH con otros recubrimientos que contienen estas cargas de manera independiente. Dicha comparación se realiza en cuanto a la resistencia a la erosión, la limitación de las corrientes de fuga en condiciones de niebla salina y la pérdida y recuperación de la hidrofobicidad. Los resultados de este trabajo muestran un mejor desempeño de los recubrimientos que contienen conjuntamente como cargas la nanosílice y la ATH que los recubrimientos que las contienen de manera independiente.A study about the influence of joint use of nanosilica and ATH as fillers on room temperature vulcanized silicone rubber used in the outdoor insulation is carried out. This study is made by comparison between room temperature vulcanized silicone rubber coating with nanosilica and ATH as simultaneous fillers and room temperature vulcanized silicone rubber coating with nanosilica and ATH as independents fillers. The parameters of this comparison are: erosion resistance, circulation of leakage currents under salt fog conditions and hydrophobicity loss. The results of this work show a better development of room temperature vulcanized silicone rubber coating with nanosilica and ATH as simultaneous fillers than room temperature vulcanized silicone rubber coating with nanosilica and ATH as independents fillers.

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    Authors: Luis Manuel Álvarez Tapia;

    En el presente trabajo se creó un modelo matemático para el motor de reluctancia conmutada WEKA SR-30102 bifásico irregular de fabricación alemana utilizando la herramienta de diseño Simulink. Para la correcta descripción de los fenómenos eléctricos y mecánicos que ocurren dentro de la máquina se utilizaron las ecuaciones eléctricas y mecánicas, tomando en consideración las características no lineales del motor y la influencia a altas velocidades de fenómenos mecánicos. Dicho modelo se utilizó para la implementación de dos estrategias de control, dígase, control a lazo cerrado de la velocidad mediante modulación de ancho de pulso y con control por histéresis. Estas estrategias fueron aplicadas a un convertidor electrónico de potencia con una configuración 2q, que posteriormente aplica las señales de potencia al motor de reluctancia conmutada. Mediante la comparación de los resultados obtenidos en la simulación y de modo experimental se validó la precisión del modelo obtenido.In the present paper a mathematical model for the WEKA SR-30102 switched reluctance motor was created using the Simulink development suite. In order to accurately model its behavior, the non-linearity of the motor was taken into account. The mathematical equations that describe the mechanical and electrical properties of the motor were used in order to accurately model the corresponding effects that occur inside the machine. Two different control strategies were created, that is, a closed loop using pulse width modulation and another one using hysteresis control. The mathematical model was validated comparing the experimental and the simulation results.

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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Abdelkader Gourbi; Mohamed MiloudiI; Houcine Miloudi;

    In order to provide new information on hybrid photovoltaic systems, this paper presents a technical, economic, and ecological study of a hybrid PV system connected to a storage system and utilized to power a remote site. We came up with a plan of action based on the HOMER software in order to accomplish our objective. The results indicate that, in comparison to PV alone and diesel alone, the hybrid system is the optimum choice given the location selected using local resources and the characteristics of the load to be provided. In addition, the hybrid system offers various advantages over diesel alone in terms of technology, economy, and even the environment. All gas emissions are significantly reduced, and the results highlight the importance of renewable energy in reducing gas emissions. These results might assist manufacturers by providing the answers to various queries regarding this kind of installation.

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    Authors: Santiago Dorrbercker Drake;

    Sobre exigencias editoriales

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  • image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
    Authors: Santiago Dorrbercker Drake; Alexander Fernández Correa;

    Editorial:La revista Ingeniería Energética celebra durante el año 2014, el 50 aniversario de la fundación del Instituto Superior Politécnico José Antonio Echevarría (CUAJE).Nuestra casa de altos estudios, fue inaugurada el 2 de Diciembre de 1964 por el Comandante en Jefe Fidel Castro Ruz y ha graduado durante este medio siglo, miles de estudiantes en las ramas de Ingenierías y Arquitectura ,así como, ha formado ingenieros y arquitectos de países de África, Asia y América Latina.Un número importante de los graduados del Instituto, han cursado estudios de formación profesional, y de niveles académicos afines al perfil de nuestra revista, lo que permite que desde hace más de 30 años, divulguemos resultados de trabajos de investigación, aplicación y desarrollo, en los que muchos de ellos han sido autores o coautores.En este 50 Aniversario, el Consejo Editorial de la Revista Ingeniería Energética envía un saludo cordial a nuestros seguidores a la vez que los invita a continuar publicando en nuestras páginas, ahora con visibilidad en la WOS.

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    Authors: Juan Miguel Mantilla González; Diego Alexander Garzón Alvarado; Carlos Humberto Galeano Urueña;

    Recent years have shown an increasing interest in ethanol blending to gasoline fuel, as well as a rapid implementation of this kind of biofuels in countries like Colombia. Taking into account the lack of studies about performance and emissions characteristics for the local engines, and the fact that new biofuels policies are emerging using studies made for non-local conditions, a study is proposed in order to verify the real changes in those characteristics into the Colombian conditions. This article presents a performance and emission analysis when different independent variables act on two engines working with gasoline-ethanol blends up to 30 % of the latter. A set of dependent variables are introduced in order to verify the real statistical influence of independent variables. Results confirm trends reported by other authors; nevertheless, these tendencies are not always statistical representative, like in the case of ethanol concentration influence on combustion duration.Los últimos años han mostrado un creciente interés en la mezcla gasolina-alcohol, así como una rápida implementación de este tipo de biocombustible en países como Colombia. Tomando en cuenta la falta de estudios sobre desempeño y emisiones para los motores locales, y el surgimiento de nuevas políticas utilizando como soporte estudios realizados en otros países, se propone verificar los cambios reales sobre esas características para las condiciones Colombianas. Este artículo presenta un análisis de desempeño y emisiones cuando diferentes variables independientes actúan sobre dos motores de combustión interna que trabajan con gasolina-etanol, con hasta 30 % en volumen de este último. Un grupo de variables dependientes es introducido para verificar la verdadera significancia estadística sobre las variables independientes. Los resultados confirman las tendencias reportadas por otros autores; sin embargo, estas tendencias no son siempre estadísticamente representativas, como el caso de la influencia de la concentración de etanol sobre la duración de la combustión.

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      Article . 2015
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    Authors: Dr. Santiago Dorrbercker Drake; Dr. Alexander Fernández Correa;
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    Article . 2014
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      Article . 2014
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    Authors: Amadou Koulibaly; Juan José González Bayón;

    En este trabajo es desarrollada la modelación de un colector solar plano para calentamiento de aire operado con convección natural. El análisis del colector mediante balances de masa y energía no estacionarios aplicados a cada uno de los elementos componentes del colector permitió desarrollar un programa en Visual Basic que simula el comportamiento dinámico del colector ante variaciones de las condiciones de operación y variaciones de los parámetros de diseño (dimensiones del colector, tipo de material de cubierta y dimensiones, material de la placa absorbedora y sus dimensiones, eficiencia óptica y tipo y espesor de aislamiento). Los resultados muestran que el software puede ser empleado para el diseño de colectores para calentamiento de aire, además de poder ser empleado para obtener las temperaturas de cada componente del colector y el rendimiento térmico instantáneo. El software también ofrece los elementos para determinar la constante de tiempo que caracteriza la dinámica del colector.In this paper the modeling of a flat solar collector for air heating was developed. This collector works with natural convection. The analysis of the collector was made using unsteady mass and energy balances applied to each component of collector. The equations were solved usinga Visual Basic code with the target to simulate the dynamics performance of the collector when the operating conditions and the design parameters are modified. The dimensions of the collector, the material and dimensions of the covert, the material and dimensions of the absorber plate, the optic efficiency and the type and thin of the insulator are the fundamentals design parameters that can be varied. The results of the simulation show that the software can be used for the design of collectors for heating air. Additionally, the software permits to determine the temperature of each component, the instantaneous efficiency of the collector and offers the elements to obtain the time constant that characterize collector dynamics.

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    Article . 2015
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      Article . 2015
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    Authors: Marta Elena Bravo de las Casas; Pedro Vicente Ruíz Sánchez;

    La línea de 110 kV Santa Clara – La Moza, ubicada en medio de la línea de enlace entre la hidroeléctrica Robustiano León (Hanabanilla) y la subestación Santa Clara 110 kV, es de gran importancia teniendo en cuenta que de la misma se obtiene la derivación de donde se alimenta la Subestación de 110/13,8 kV Gran Panel de nuevo tipo. La misma cuenta con un mecanismo de reenganche trifásico el cual no realiza de forma exitosa sus funciones, lo que trae afectaciones y dificultades a la hora de restablecer el sistema. En este trabajo se analizan las condiciones de operación de la región, así como la problemática de las automáticas instaladas proponiendo soluciones con el objetivo de lograr una operación eficaz ante las averías, sin que la hidroeléctrica Hanabanilla se pierda del Sistema Eléctrico Nacional y que no se pierda el suministro de energía eléctrica a la subestación Gran Panel.The 110 kV line Santa Clara –La Moza, which is located in the middle of the line of link between the hydroelectric Robustiano León (Hanabanilla) and the substation Santa Clara 110 kV, is of great importance considering that of the same one obtains the derivation where new type Gran Panel Substation 110/13,8 feeds.Ithas athree-phasereclosingmechanismwhichdoes not performhis dutiessuccessfully, which brings affectationsanddifficultythe moment of restoringthe system. In this work, the operating conditions of the region are discussed, as well as the problem of the automatics installed, and is proposing solutions in order to ensure effective operation before faults, without that the Hanabanilla hydroelectric loses the syncrhronism with the Electrical National System and supply the substation Gran Panelis not lost.

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    Authors: Jorge Enrique Carrión González; Raúl Nicolás Carvajal Pérez;

    El Ministerio de Electricidad y Energía Renovable de Ecuador (MEER) está implementando el plan nacional de coccióneficiente, en el país y en la región Sur. El plan se basa en reemplazar las cocinas que usan gas licuado de petróleo (GLP)por cocinas eléctricas de inducción, estos cambios representan un aumento considerable en la demanda eléctrica delsector residencial. Los estudios de los sistemas eléctricos de distribución realizados permiten evaluar el comportamientoactual de las redes eléctricas y analizar futuros escenarios para poder determinar las mejoras de carácter técnico yorganizativo que deben introducirse. Seelaboró un algoritmo genético especializado para evaluar el efecto querepresenta en los transformadores de distribución la introducción masiva de las cocinas de inducción, con vistas aresolver el problema de un crecimiento brusco de la demanda de energía, minimizando los costos de inversión en nuevosequipos de transformación.The Ministry of Electricity and Renewable Energy of Ecuador (MEER) is implement in the national plan for efficient cooking in thesouthern region and the country. The planes based on replacing kitchens using liquefied petroleum gas (LPG) for induction cookers,representing an increase in electricity demanding the residential sector. Studies of electrical distribution systems made it possible toassess the current behavior of electrical networks and analyze future scenarios to determinism provident in technical and organizationalmeasures to be introduced. A genetic algorithm to evaluate the effect on distribution transformer soft he massive introduction ofinduction cookers, with view to resolving the problem of sharp growthin demand for energy while minimizing the costs of investment innew equipment was developed.

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      Article . 2015
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    Authors: Ignat Pérez Almirall; Daniella Cibele Bezerra; Edson Guedes da Costa; Miguel Castro Fernández;

    En el presente trabajo se realiza un estudio sobre la influencia que tiene el uso conjunto de la nanosílice y la ATH como cargas en la goma de silicona vulcanizada a temperatura ambiente que se emplea actualmente en el aislamiento externo para cubrir aisladores de porcelana o vidrio. Este estudio se realiza comparando recubrimientos de silicona vulcanizada a temperatura ambiente que contienen como cargas conjuntamente nanosílice y ATH con otros recubrimientos que contienen estas cargas de manera independiente. Dicha comparación se realiza en cuanto a la resistencia a la erosión, la limitación de las corrientes de fuga en condiciones de niebla salina y la pérdida y recuperación de la hidrofobicidad. Los resultados de este trabajo muestran un mejor desempeño de los recubrimientos que contienen conjuntamente como cargas la nanosílice y la ATH que los recubrimientos que las contienen de manera independiente.A study about the influence of joint use of nanosilica and ATH as fillers on room temperature vulcanized silicone rubber used in the outdoor insulation is carried out. This study is made by comparison between room temperature vulcanized silicone rubber coating with nanosilica and ATH as simultaneous fillers and room temperature vulcanized silicone rubber coating with nanosilica and ATH as independents fillers. The parameters of this comparison are: erosion resistance, circulation of leakage currents under salt fog conditions and hydrophobicity loss. The results of this work show a better development of room temperature vulcanized silicone rubber coating with nanosilica and ATH as simultaneous fillers than room temperature vulcanized silicone rubber coating with nanosilica and ATH as independents fillers.

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    Authors: Luis Manuel Álvarez Tapia;

    En el presente trabajo se creó un modelo matemático para el motor de reluctancia conmutada WEKA SR-30102 bifásico irregular de fabricación alemana utilizando la herramienta de diseño Simulink. Para la correcta descripción de los fenómenos eléctricos y mecánicos que ocurren dentro de la máquina se utilizaron las ecuaciones eléctricas y mecánicas, tomando en consideración las características no lineales del motor y la influencia a altas velocidades de fenómenos mecánicos. Dicho modelo se utilizó para la implementación de dos estrategias de control, dígase, control a lazo cerrado de la velocidad mediante modulación de ancho de pulso y con control por histéresis. Estas estrategias fueron aplicadas a un convertidor electrónico de potencia con una configuración 2q, que posteriormente aplica las señales de potencia al motor de reluctancia conmutada. Mediante la comparación de los resultados obtenidos en la simulación y de modo experimental se validó la precisión del modelo obtenido.In the present paper a mathematical model for the WEKA SR-30102 switched reluctance motor was created using the Simulink development suite. In order to accurately model its behavior, the non-linearity of the motor was taken into account. The mathematical equations that describe the mechanical and electrical properties of the motor were used in order to accurately model the corresponding effects that occur inside the machine. Two different control strategies were created, that is, a closed loop using pulse width modulation and another one using hysteresis control. The mathematical model was validated comparing the experimental and the simulation results.

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