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Soga, Kazuhiro; AKASAKA, Hiroshi; Nimiya, Hideyo. A comparison of methods to estimate hourly total irradiation on tilted surfaces from hourly global irradiation on a horizontal surface. In: BUILDING SIMULATION, 6., 1999, Kyoto. Anais... Kyoto, 1999. p. 635-642.
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Dados do autor na base InfoHab:
Número de Trabalhos: 1 (Nenhum com arquivo PDF disponível)
Citações: Nenhuma citação encontrada
Índice h: Indice h não calculado  
Co-autores: Nenhum co-autor encontrado

Abstract

The models for estimation of total irradiation on tilted surfaces are evaluated. Measurements at three of the Japanese International Daylight Measurement Programme (IDMP) sites; Sapporo, Tokyo and Fukuoka, are employed for the evaluation. At first, beam irradiation are estimated from horizontal global irradiation using three direct and six diffuse irradiance models. Root Mean Square Errors (RMSEs) of Perez, Erbs, Chandrasekaran and Reindl models are comparatively small among the nine models. Next, vertical surface irradiations are estimated from beam and diffuse irradiations using an isotropic and five anisotropic sky radiance models. RMSE of Perez anisotropic sky irradiance model is the smallest. Finally, vertical surface irradiations are estimated from horizontal global irradiation using each of the 54 combinations of the nine irradiance and six sky irradiance models. The combination of the Perez beam irradiance and the Perez anisotropic sky irradiance model gives the smallest RMSE.
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