Optimizing the beam and sky diffuse radiation calculations under random obstructions of urban environments
Optimizing the beam and sky diffuse radiation calculations under random obstructions of urban environments
复制标题
优化城市环境随机障碍物下的光束和天空漫辐射计算
DOI：
10.1016/j.buildenv.2021.107806
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发表时间：
2021-03
影响因子：
7.4
通讯作者：
Zhao Yang
中科院分区：
文献类型：
--
作者：
Lou Siwei;Huang Yu;Li Danny H. W.;Xia Dawei;Zhou Xiaoqing;Zhao Yang
Solar radiation is important in studies of the energy and environment of buildings. Calculations of the direct beam and sky diffuse radiation, however, usually rely on numerical approaches, which can lead to notable calculation burdens. This research evaluates the update interval of the daily solar position series and the skydome discretization densities as they affect the estimation accuracies of the direct beam and sky diffuse radiation, respectively. Additionally, an approach is proposed for studying the direct beam radiation using a number of representative sun directions, the density of which is optimized for efficient radiation studies under external obstructions. Field measurements and simulations show that 61 sky elements can be sufficient for diffuse radiation estimations in low-latitude regions. For the direct beam, on the other hand, more than 1100 representative sun directions are necessary. The accuracy is comparable to that of the approach in which the sun position is updated in the calculation interval every 2–10 days. The representative sun direction approach and the results of the optimized day interval and sky discretization density are essential to efficient building simulations conducted at high frequencies.
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一种根据全球太阳辐射测量快速识别天空状况的新方法
影响因子：
8.7
作者：
Siwei Lou;Yu Huang;Danny H.W. Li;Dawei Xia;Xiaoqing Zhou;Yang Zhao
通讯作者：
Yang Zhao
DOI：
10.18086/eurosun2018.09.16
发表时间：
2018
期刊：
--
影响因子：
--
作者：
C. Gueymard;S. Ivanova
通讯作者：
C. Gueymard;S. Ivanova
DOI：
10.1016/j.egypro.2016.11.240
发表时间：
2016-12
期刊：
Energy Procedia
影响因子：
--
作者：
Xueqian Fu;Shangyuan Huang;Rui Li;Qinglai Guo
通讯作者：
Xueqian Fu;Shangyuan Huang;Rui Li;Qinglai Guo
影响因子：
11.2
作者：
Fikru, Mahelet G.;Gautier, Luis
通讯作者：
Gautier, Luis
影响因子：
6.7
作者：
C. Carter
通讯作者：
C. Carter