Diseño de un sistema solar fotovoltaico para dos aulas moviles del Sena

Ingeniería EléctricaEl presente trabajo de grado presenta, de manera detallada y completa, un estudio de implementación de un sistema solar fotovoltaico a una de las aulas móviles del SENA, Centro Industrial y de Aviación, Regional Atlántico, para abastecer su consumo eléctrico. El primer paso fue la realización de una investigación sobre la transformación de la energía lumínica proveniente del sol, en energía eléctrica, proceso que se lleva a cabo en el panel o módulo fotovoltaico (FV), el cual es el elemento principal del sistema usado como el generador de energía eléctrica. A continuación se analiza el funcionamiento de un arreglo solar fotovoltaico autónomo, con todos los componentes, teniendo en cuenta sus características para la selección y dimensionamiento. Posteriormente se realiza un estudio de la radiación solar promedio de la zona por donde se ha destinado el funcionamiento del aula móvil, así como el censo de carga con que cuenta el aula móvil. Se presentan además, datos sobre los precios de los diferentes equipos para aplicaciones fotovoltaicas, a partir de éstos se obtiene un cálculo del presupuesto inicial necesario para la implementación del proyecto. Como conducta final se ofrece una posibilidad de financiamiento del proyecto teniendo en cuenta las condiciones del mismo.This graduation work presents a detailed and comprehensive study for the implementation of a solar PV system to one of the mobile classrooms at the SENA, Industrial and Aviation Center, Atlantic Regional, to supply their electricity. The first step was to conduct research on the transformation of light energy from the sun into electrical energy, a process that takes place on the panel or photovoltaic module (PV), which is the main element of the system used as electricity generator. Then we analyze the performance of a standalone photovoltaic solar array, with all its components, taking into account its characteristics for selection and sizing. Subsequently, a study is to be made on of the average solar radiation of the area where the operation of the mobile classroom is expected, as well as the charging census available to the mobile classroom. It also presents data on the prices of different equipment for photovoltaic applications. , From them, you get an estimate of the initial budget required for project implementation

Fatigue in Continuous Fibre Reinforced Thermoplastic Composites

International audienceAdditive manufacturing (AM) technologies have been applied with success in many applications, being fused deposition modelling (FDM) the most widely used AM technique for fabricating thermoplastic pieces. The thermoplastic parts made by FDM present lack of strength and low stiffness, as required for fully functional and load-bearing parts. Due to this restriction, a new technology to reinforce with fibres the thermoplastic filaments was developed in the last years. Continuous fibre reinforced thermoplastic composites (CFRTPC) printers are taking this technology to a whole new level in terms of efficient production and mechanical properties. Static mechanical properties, as well as fatigue behaviour, were studied since in these types of loads a wide range of engineering dynamic applications can be envisaged. Tensile tests were performed to characterise the static mechanical properties. Fatigue tests were done to analyse the durability behaviour of the FDM composite materials, and the fracture surface was analysed by SEM microscopy. The results showed that carbon fibre isotropic layers had the higher ultimate tensile stress, with 165 MPa. From fatigue tests, stress vs. number of cycles curves (S vs Nf) in the temporary life zone were obtained. It is observed from the results that specimens with nylon matrix, triangular filling pattern and matrix density of 20%, reinforced with carbon fibre at 0-degrees, showed bette