[1]董宏,王怡,李俊锋.散射辐射在半球天空的分布特征研究[J].西安建筑科技大学学报(自然科学版),2018,50(03):435-0440.[doi:10.15986/j.1006-7930.2018.03.019]
　DONG Hong,WANG Yi,LI Junfeng.Study on distribution characteristics of diffuse solar radiation in hemisphere sky[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2018,50(03):435-0440.[doi:10.15986/j.1006-7930.2018.03.019]
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散射辐射在半球天空的分布特征研究()
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西安建筑科技大学学报（自然科学版）[ISSN:1006-7930/CN:61-1295/TU]

卷:
50
期数:
2018年03期
页码:
435-0440
栏目:
出版日期:
2018-06-30

文章信息/Info

Title:
Study on distribution characteristics of diffuse solar radiation in hemisphere sky
文章编号:
1006-7930(2018)03-0435-06
作者:
董宏1; 2; 王怡1; 李俊锋1
（1. 西安建筑科技大学 环境与市政工程学院，陕西 西安710055;2.中国建筑科学研究院，北京100013）
Author(s):
DONG Hong1; 2;  WANG Yi1;  LI Junfeng1
（1. School of Environmental and Municipal Engineering, Xi′an Univ. of Arch. & Tech., Xi′an 710055, China; 2. China Academy of Building Research, Beijing 100013, China)
关键词:
散射辐射; 半球天空; 总量特征; 分布特征
Keywords:
diffuse solar radiation;  hemisphere sky;  total characteristic;  distribution characteristic
分类号:
P422
DOI:
10.15986/j.1006-7930.2018.03.019
文献标志码:
A
摘要:
为了掌握散射辐射在半球天空的分布特征，为构建和评价散射辐射模型提供依据，本研究通过建立辐射观测站获取了实测数据，分析了半球天空中散射辐射的总量、分布与太阳位置、晴朗程度之间的关系.研究表明：(1) 半球天空中散射辐射的总量Id与太阳高度角h成正比关系，斜率与直射辐射透过率Kn成正比.(2) Id与晴空指数Kt间呈现出先上升再下降的变化关系.但散射辐射在总辐射中的占比Kd与Kt成反比关系.(3) 散射辐射在半球天空的分布呈现出距离太阳越远辐射越小的变化趋势，散射辐射的变化主要集中在与太阳夹角小于90°的天空中，在远离环日区域的天空中，散射辐射的变化幅度很小（4）从环日区域向外，散射辐射减小的幅度在阴、晴天时较为均匀；多云天时散射辐射在环日区域附近快速减小，Kd从在环日区域接近晴天状况快速过度到环日区域以外接近阴天状况.
Abstract:
In order to master the distribution characteristics of diffuse solar radiation in hemisphere sky, and to provide the basis for the diffuse solar radiation models In this study, the measured data are obtained by establishing a solar radiation stationAnd the relationship between amount and distribution of diffuse radiation and position of the sun, cloud condition are analyzed. The results show:(1) Total amount of diffuse radiation (Id) is significantly affected by the solar altitude angle Theslope of lines is affected by the ratio of direct normal solar radiation and solar constant (Kn). (2) The relationship between Id and clearness index (Kt) showed a rise and then decline.But the ratio of diffuse solar radiation and total solar radiation in horizontal (Kd) is inversely proportional to Kt. (3) The distribution of diffuse radiation in the hemisphere sky presents the change that trend to smaller with the distance from the sun.The change of the diffuse radiation mainly concentrated in the sky with the angle less than 90°. Far away from the ring area, the range of diffuse radiation′s change is very small. (4) Out of the ring area of the sun, the change of diffuse radiation decrease is relatively uniform in overcast and cloudless. Diffuse radiation decreases quickly out of the ring area of the sun in cloudy. Kd close to the cloudless situation around the ring area of the sun, and to the overcast situation outside the ring area in cloudy.

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备注/Memo

备注/Memo:
收稿日期:2017-04-05修改稿日期:2018-05-18
基金项目:国家自然科学基金面上项目(51578521)；西部绿色建筑国家重点实验室培育基地开放研究基金(LSKF201601)
作者简介:董宏(1975-)，男，博士生，研究员，主要从事建筑热工与节能方面的研究. E-mail：dh_ong@126.com
更新日期/Last Update: 2018-09-11