2,604 research outputs found
Redundancy and Defense Resource Allocation Algorithms to Assure Service Continuity against Natural Disasters and Intelligent Attacks
No full textStereoscopic PIV measurement in laminar rotating plane Couette flow
No full textPlane Couette flow with spanwise system rotation shows structures of streamwise-oriented roll cells that arise due to the instability by the Coriolis force when the system rotation is in the opposite direction to the mean flow vorticity. The momentum transport caused by such roll cell structures makes the flow tend to exhibit zero absolute vorticity. In the present study, stereoscopic PIV measurements in the rotating plane Couette flow were carried out in order to further illuminate the vortex structures and transport phenomena in this flow. The Reynolds stresses and some terms of its transport equation were evaluated to discuss the transport phenomena caused by the coherent structure. Furthermore, the wall shear stress was evaluated based on the measurement results of the Reynolds and viscous shear stresses and its variation with the system rotation rate is also presented
The effects of different MYF6 geneotypes on carcass and meat quality traits in Landrance ? Duroc crossbred pigs
No full textGeneralized diagnostic scaling for high-order moments in turbulent boundary layers
No full textThe present work builds upon the diagnostic plot for the streamwise turbulence intensity [Alfredsson & Örlü, 2010] and generalises it for higher-order (even and odd) moments providing a general description of the probability density distribution of streamwise velocity fluctuations. Turbulent boundary layers (up to a friction Reynolds number of 20'000) are employed and demonstrate its feasibility to scale data throughout the overlap and outer region
PV architectures for DC microgrids using buck or boost exclusive microconverters
No full textDC microgrids can connect directly dc renewable energy sources with increasing amount of dc loads. In this paper it is looked for possible architectures for integrating PV panels into dc microgrids, by means of microconverter strings. Three topologies are considered, featuring only buck microconverters and only boost microconverters, since they promise higher efficiency due to fewer semiconductors in the current path. The topologies under exam are tested with a perturb and observe MPPT, in the cases of abrupt local shading and uneven shading over a solar panels' array. Among the three, the best topology by response time and control ease is found.Accepted Author ManuscriptOld - EWI-ESE-DC&S DC systems & StorageElectrical Power Processin
Matching PV array output with residential load by optimisation of array orientation
No full textCurrently PV modules are positioned to receive the highest amount of incident radiation in a year. Therefore, the generation pattern is independent of the consumption and a large storage is required to compensate for the same. This paper studies the possibility of orienting the modules differently in order to match the consumption more efficiently.Accepted Author ManuscriptOld - EWI-ESE-DC&S DC systems & Storag
ESTUDIO LUMÍNICO DE LOS ESTACIONAMIENTOS DEL P.H. DELUXE RESIDENCE
Get PDFWindows are one of the elements that most influence the entry of natural lighting into a building, reducing energy consumption, avoiding using artificial lighting throughout the day. Therefore, it is important to find an optimal design considering the environment of the building and the orientation of the windows. In this study, the lighting conditions of two levels of parking lots of the P.H. Deluxe Residence, taking measurements with the lux meter. The results indicate the impact that the materials used in the façade have on the light levels of the area.Las ventanas son uno de los elementos que más influyen en la entrada de iluminación natural dentro de un edificio, reduce el consumo energético, evitando utilizar la iluminación artificial durante todo el día. Por lo tanto, es importante encontrar un diseño óptimo tomando en cuenta el entorno del edificio y la orientación de las ventanas. En este estudio se evalúa las condiciones lumínicas de dos niveles de estacionamientos del P.H. Deluxe Residence, realizando las mediciones con el luxómetro. Los resultados nos indican el impacto que tienen los materiales utilizados en la fachada sobre los niveles lumínicos del área
Adaptación módulo 11 instrumentos financieros básicos cuentas por cobrar al edificio Sol del Este P.H.
Get PDFCD-T 657.72 B41; 70 pEl presente proyecto de grado, tiene como objetivo implementar y realizar la adaptación de las Normas de Información Financiera para las cuentas e instrumentos financieros por cobrar de las propiedades horizontales en el Edificio Sol del Este P.H, de acuerdo con lo establecido en la ley 1314 del 2009, la ley 675 de 2001 y los decretos 2706 de 2012 y 3019 de 2013, modificados mediante el Decreto Único Reglamentario 2420 del 2015.Universidad Libre Seccional Pereir
Educación ambiental orientada al manejo adecuado de residuos sólidos en el Nogal Club Residencial P.H. - Pereira
Get PDFEl Nogal Club Residencial P.H. presentaba dificultades en cuanto al manejo de los residuos sólidos generados a pesar de contar con iniciativas para aprovechar el material, por lo cual en conjunto con la Empresa de Energía de Pereira SA ESP y la recuperadora La 35 se inicia con el proyecto REPAFA (Reciclar para Pagar la Factura), el cual tiene como finalidad incentivar a los residentes del Club residencial a separar desde la fuente y entregar los residuos aprovechables en los contenedores dispuestos para tal fin y con el dinero de la venta de los residuos aprovechados, subsidiar parte del costo de la factura de energía de las áreas comunes..
Estudio del diseño de la envolvente de los P.H. Solana y Mystic Valley, su influencia en la iluminación y ventilación natural dentro de un apartamento de cada edificio
Get PDFIn the following study, the residential architectural designs of the P.H. Solana and P.H. Mystic Valley, where the provisions of its windows, ventilation and natural lighting in an apartment of each of the towers were identified. The P.H. Solana is located in front of the main road of Santa María, Panama City, while the P.H Mystic Valley is located in the Crisol, in front of La Pulida street, San Miguelito, both in the province of Panama. Thanks to the acquisition of the plans, a 360-degree tour obtained thanks to their respective web pages, an elevation of the floors and an elevation of the georeferenced 3D modeling of the apartments, the solar incidence and ventilation on the 53rd floor of the P.H. Solana and on the 12th floor of the P.H Mystic Valley. The results indicated that natural ventilation and lighting was due to the orientation, location of eaves and balconies, which made up the set of apartments, the latter (the balconies), in both cases being placed in a large part of the main facades, It turned out to be a trigger for the lack of solar incidence in areas such as the living room and the main bedroom, however they managed to create shadows, acting as protectors, mainly from 3:00 p.m. to 6:00 p.m. avoiding direct sunlight. , which helped to eliminate the hot spaces that could have been generated during these hours, therefore it was possible to improve the thermal comfort inside the apartments. En el siguiente estudio se analizaron los diseños arquitectónicos residenciales del P.H. Solana y del P.H. Mystic Valley, donde se identificó las disposiciones de sus ventanas, la ventilación e iluminación natural en un apartamento de cada una de las torres. El P.H. Solana está ubicado frente a la vía principal de Santa María, Ciudad de Panamá, mientras que el P.H Mystic Valley se localiza en el Crisol, frente a la calle La Pulida, San Miguelito, ambos en la provincia de Panamá. Gracias a la adquisición de los planos, un recorrido de 360 grados obtenido en sus respectivas páginas web, un alzado de las plantas y a un alzado del modelado 3D georreferenciado de los apartamentos, se evaluó la incidencia solar y ventilación en el piso 53 del P.H. Solana y en el piso 12 del P.H Mystic Valley. Los resultados señalaron que la ventilación e iluminación natural se debía gracias a la orientación, localización de aleros y balcones, que conformaban el conjunto de apartamentos, este último (los balcones), en ambos casos al estar colocados en gran parte de las fachadas principales, resulto ser un detonador de la falta de incidencia solar en las áreas como la sala y la recamara principal, sin embargo, los mismos consiguieron crear sombras, actuando como protectores, principalmente en horarios de 3:00 p. m. a 6:00 p. m. evitando la radiación directa del sol, lo que ayudo a eliminar los espacios calurosos que se pudieron haber generar en estos horarios, por consiguiente se logró mejorar el confort térmico dentro de los apartamentos
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