Solar radiation calculation methodology for building exterior surfaces

Flor, Francisco José Sánchez de la; Cebolla, R. Ortiz; Félix, José Luis Molina; Domínguez, Servando Álvarez

doi:10.1016/j.solener.2004.12.007

Cited by 44 publications

(8 citation statements)

References 11 publications

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“…In order to accelerate this process, some building energy simulation programs make a previous shading characterization for a determined range of solar altitude and azimuth before the whole building simulation. Then, the most suitable range is selected for each simulation time and solar position [12,13]. Other programs select only one day from a determined period, usually one month, in order to develop shading calculations which are kept constant for the rest of the period.…”

Section: Page 4 Of 30mentioning

confidence: 99%

Influence of selected solar positions for shading device calculations in building energy performance simulations

Maestre

Blázquez

Gallero

et al. 2015

Energy and Buildings

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Section: Page 4 Of 30mentioning

confidence: 99%

Influence of selected solar positions for shading device calculations in building energy performance simulations

Maestre

Blázquez

Gallero

et al. 2015

Energy and Buildings

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“…En el artículo «Solar radiation calculation methodology for building exterior surfaces» Francisco José Sánchez de la Flor y otros autores (18), exponen que la contribución solar a través de los huecos de ventana es un elemento de acondicionamiento importante y su control en el periodo de verano supone una adecuada estrategia de acondicionamiento en dicho período.…”

Section: Justificación Del Estudiounclassified

El comportamiento del hueco de ventana en la arquitectura vernácula mediterránea española ante las necesidades de acondicionamiento solar

Larrumbide¹,

Bedoya²

2015

Inf. constr.

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Cómo citar este artículo/Citation: Larrumbide, E., Bedoya, C. (2015). El comportamiento del hueco de ventana en la arquitectura vernácula mediterránea española ante las necesidades de acondicionamiento solar. RESUMENEl hueco de ventana es uno de los elementos de acondicionamiento pasivo más importante de la envolvente térmica de una construcción, y por tanto el más sensible al intercambio térmico con el exterior y a las variaciones en las condiciones de soleamiento que se manifiesten en el entorno. La arquitectura vernácula, que cuenta con una amplia representación de tipos en la Península Ibérica, se convierte en el marco adecuado del análisis de la interrelación existente entre la edificación y el entorno, y en concreto entre el hueco de ventana y el soleamiento del lugar. El desarrollo de una metodología que facilite el estudio del hueco de ventana, desde el punto de vista del soleamiento, permite obtener respuestas sobre la mayor o menor adaptación que ofrece el mismo a las necesidades de acondicionamiento solar que se requieran en cada zona climática.Palabras clave: Factor de sombra; ventana; arquitectura vernácula; retranqueo de ventana. ABSTRACT

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“…This calculation can be accelerated with some preprocessing of the feasible solar positions. In this sense, Sánchez de la Flor et al [19] propose the use of a non-dimensional altitude and azimuth, which assures the calculation in the former positions.…”

Section: Introductionmentioning

confidence: 99%

Effect of Sky Discretization for Shading Device Calculation on Building Energy Performance Simulations

et al. 2020

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The calculation of sunlit surfaces in a building has always been a relevant aspect in building energy simulation programs. Due to the high computational cost, some programs use algorithms for shading calculation for certain solar positions after discretization of hemispherical sky. The influence of the level of discretization on the estimation of incident direct radiation on building surfaces, as well as on the required computational times, are studied in this work. The direct solar energy on a window for a year, with simulation time steps of five minutes, has been simulated by using an algorithm based on Projection and Clipping Methods. A total of 6144 simulations have been carried out, varying window sizes, window orientations, typologies of shading devices, latitudes and discretization levels of the hemispherical sky. In terms of annual incident solar energy, the results show that maximum error values are about 5% for a low level of angular discretization. Errors up to 22% in hourly incident solar energy have been estimated for some of the configurations analysed. Furthermore, a great number of configurations show errors of shading factor on a window of up to 30%, which could be most relevant in studies of natural lighting. The study also shows that the improvement achieved by the most accurate discretization level implies an increase in computational cost of about 30 times.

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Solar radiation calculation methodology for building exterior surfaces

Cited by 44 publications

References 11 publications

Influence of selected solar positions for shading device calculations in building energy performance simulations

Influence of selected solar positions for shading device calculations in building energy performance simulations

El comportamiento del hueco de ventana en la arquitectura vernácula mediterránea española ante las necesidades de acondicionamiento solar

Effect of Sky Discretization for Shading Device Calculation on Building Energy Performance Simulations

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