期刊
SOLAR ENERGY
卷 236, 期 -, 页码 644-653出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.solener.2022.02.029
关键词
SHGC; g-value; Solar Heat Gain Coefficient; divergence; solar simulator; calorimetric measurement; contribution coefficients; luminance camera
资金
- German Federal Ministry for Economic Affairs and Energy [03ET1432A]
This study examines the impact of the angular divergence of radiation from solar simulators on the experimental determination of the Solar Heat Gain Coefficient (SHGC) of shading devices. It proposes experimental and numerical methods to correct for this effect, providing a potential solution for future SHGC measurements.
The solar protection feature of shading devices is characterized by the Solar Heat Gain Coefficient (SHGC) or g value. Given their complex light-scattering properties, it is advisable to test innovative shading devices calorimetrically in a laboratory. In the case of an indoor calorimetric facility, a solar simulator is required as the light source. The light beam radiated by commercial solar simulators is not parallel and in general more divergent than direct sunlight. This study analyses the impact of the angular divergence of radiation from solar simulators on the experimental determination of the SHGC of fenestration systems. It is shown that this effect is not negligible in many cases. Two methods are proposed for this purpose: (1) an experimental one based on measurements with a luminance camera, and (2) a numerical one based on a digital model of a calorimetric facility. Both methods build on the calculation of contribution coefficients from different regions of the field of view of the sample. The methods can be used to correct the effect of angular divergence on SHGC measurements in the future.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据