483 resultados para Dudrid, Cristobal


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In order to implement accurate models for wind power ramp forecasting, ramps need to be previously characterised. This issue has been typically addressed by performing binary ramp/non-ramp classifications based on ad-hoc assessed thresholds. However, recent works question this approach. This paper presents the ramp function, an innovative wavelet- based tool which detects and characterises ramp events in wind power time series. The underlying idea is to assess a continuous index related to the ramp intensity at each time step, which is obtained by considering large power output gradients evaluated under different time scales (up to typical ramp durations). The ramp function overcomes some of the drawbacks shown by the aforementioned binary classification and permits forecasters to easily reveal specific features of the ramp behaviour observed at a wind farm. As an example, the daily profile of the ramp-up and ramp-down intensities are obtained for the case of a wind farm located in Spain

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La mejora de la envolvente del edificio mediante inyección de aislamiento térmico en cámara de aire es una opción de rehabilitación energética económicamente viable, sin pérdida de superficie útil, con poca incidencia en el aspecto exterior y mínima molestia al usuario. Pero para aproximarse a los Edificios de Energía Casi Nula conviene combinarlo con la resolución de puentes térmicos. Se proponen dos soluciones de intervención, desde el exterior y el interior del cerramiento, mediante paneles ligeros industrializados capaces de corregir el comportamiento en estos puntos. Se ha realizado una intervención de inyección en un demostrador en Madrid, que está siendo monitorizado como parte de la investigación del sistema de inyección y su repercusión sobre los puentes térmicos. Como segunda fase de la intervención se plantea la implementación de los sistemas de paneles.

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Según Palau J.B.C.S. es Juan Bautista Company

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Los map. pleg. son obra de Castells : "Castells f."

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Según Palau, J.B.C.S. es Juan Bautista Company

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Según Palau, J.B.C.S. es Juan Bautista Company

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Según Palau, J.B.C.S. es Juan Bautista Company

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Contiene : Romance endecasilabo donde se celebra la feliz aparicion de la imagen de San Christoval / Don Joseph Vicente Orti y Mayor

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¶4, A-Eee4 Fff2

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Sign.: [calderón]-2[calderón]8, 3[calderón]4, A-X8, Y6

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We have analyzed the influence of the actual height of Bolund island above water level on different full-scale statistics of the velocity field over the peninsula. Our analysis is focused on the database of 10-minute statistics provided by Risø-DTU for the Bolund Blind Experiment. We have considered 10-minut.e periods with near-neutral atmospheric conditions, mean wind speed values in the interval [5,20] m/s, and westerly wind directions. As expected, statistics such as speed-up, normalized increase of turbulent kinetic energy and probability of recirculating flow show a large dependence on the emerged height of the island for the locations close to the escarpment. For the published ensemble mean values of speed-up and normalized increase of turbulent kinetic energy in these locations, we propose that some ammount of uncertainty could be explained as a deterministic dependence of the flow field statistics upon the actual height of the Bolund island above the sea level.

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[Escala indeterminada]

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Hay un ejemplar encuadernado con: Breve descripcion de las fiestas que hizo el Real Convento de Predicadores de Valencia en la beatificacion del B. Juan de Ribera. Y sermón que predicó ... Luis Ballester, prior del mismo convento. (XVIII/4277).