|
|
|
|
|
| Souza,Adilson P. de; Escobedo,João F.; Dal Pai,Alexandre; Gomes,Eduardo N.. |
| It was evaluated the annual evolution of global, direct and diffuse components of incident solar radiation on tilted surfaces to 12.85, 22.85 and 32.85º, facing north, in Botucatu, state of São Paulo, Brazil. The radiometric fractions were obtained for each component of the radiation in the aforementioned surfaces, through the ratio with the global and top of the atmosphere radiations. Seasonality was evaluated based on monthly averages of daily values. The measures occurred between 04/1998 and 07/2001 at 22.85º; 08/2001 and 02/2003 at 12.85º; and from 03/2003 to 12/2007 at 32.85º, with concomitant measures in the horizontal surface (reference). The levels of global and direct radiation on tilted surfaces were lower in summer and higher in the equinoxes... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Solar energy; Clearness index; Atmospheric transmissivity; Climatic conditions. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162012000200005 |
| |
|
|
| Ronoh, Erick K.. |
| Solar radiation is the driving force for the surface energy balance in buildings such as greenhouses. The greenhouses are generally tilted towards the sun in order to maximize the solar irradiance on the surfaces. Precise computation of the solar radiation received on these surfaces assumes an important role in the energy simulation. It is practical to calculate the total solar irradiance on the tilted surfaces based on the solar global and diffuse radiation intensities on horizontal surfaces. In this work, a south-facing thermal box inclined at 26.5° from the horizontal was used for solar radiation measurements. Additionally, the recorded solar radiation data were retrieved for the study location and used to develop an empirical correlation. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Solar radiation; Greenhouses; Tilted surface; Diffuse fraction; Clearness index. |
| Ano: 2017 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3903 |
| |
|
|
|
