Assessment of diffuse radiation models for cloudy atmospheric conditions in the Azores region

被引：24
|
作者：
Magarreiro, C.
Brito, M. C.
Soares, P. M. M.
机构：
[1] Univ Lisbon, Fac Ciencias, Inst Dom Luiz, P-1700016 Lisbon, Portugal
[2] Univ Lisbon, Fac Ciencias, Dept Engn Geog Geofis & Energia, P-1700016 Lisbon, Portugal
来源：
SOLAR ENERGY | 2014年 / 108卷
关键词：
Diffuse solar radiation; Correlation models; Cloudy atmospheric conditions; Azores; SOLAR-RADIATION; SAO-PAULO; FRACTION; CITY;
D O I：
10.1016/j.solener.2014.08.003
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
Measurements of diffuse, global and direct solar irradiance are key to a proper assessment of the potential of solar energy technologies. Unfortunately, worldwide measured irradiance databases usually consist of only global solar radiation data, often with limited spatial coverage. The estimation of the diffuse fraction from global radiation is therefore essential. Solar radiation models for prediction hourly diffuse fraction from global radiation are reviewed in this paper in order to explore their applicability to the Azorean region. Since models of diffuse fraction exhibit some degree of location dependence, a correction to the best performance model to improve the results for the studied region by considering the zenith angle is also presented. (C) 2014 Elsevier Ltd. All rights reserved.
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页码：538 / 547
页数：10
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