A study of ultraviolet solar radiation at Cairo urban area, Egypt

Solar Energy ◽  
2004 ◽  
Author(s):  
S ROBAA
2016 ◽  
Vol 20 (4) ◽  
pp. 29-37
Author(s):  
Kinga Nelken ◽  
Kamil Leziak

AbstractThe aim of this paper is to determine the contemporary differences in the inflow of global solar radiation in Warsaw (urban station) and Belsk (rural station). The meteorological data used comprised daily sums of global solar radiation (in MJ•m−2) and the duration of sunshine (in hours) for the period 2008 2014. On clear days in spring and summer, the rural area receives more solar radiation in comparison to the urban area, whereas in autumn a reverse relationship occurs. On cloudy days in all seasons, the rural area receives more solar radiation than the urban area, and the relationship is the strongest in winter. Differences between urban and rural areas on cloudy days are smaller than those observed on clear days.


Solar Energy ◽  
1990 ◽  
Vol 44 (6) ◽  
pp. 315-319 ◽  
Author(s):  
M.A. Elhadidy ◽  
D.Y. Abdel-Nabi ◽  
P.D. Kruss

2019 ◽  
Vol 136 ◽  
pp. 05010
Author(s):  
Moyan Zhang ◽  
Yan Liu ◽  
Ruixin Chen ◽  
Xiangfei Guo ◽  
Weiqing Yuan ◽  
...  

In this paper, the total daily global solar radiation is tested at 18 locations with different morphological characteristics in Xi’an University of Architecture and Technology. PTgui is used to convert the panoramic pictures from Baidu Street Map to fisheye images. Sky view factor (SVF) and tree view factor (TVF) are calculated by Rayman model with fisheye images. SVF is used to calculate the total daily global solar radiation at the 18 locations with two different methods and TVF is used to classify the locations. The calculations and testing results are compared and combined the morphological characteristics. Then it is found that using suitable methods on different locations is necessary to obtain more accurate results whether the TVF (tree view factor) is more than 0.3 or less. To obtain solar radiation at different locations in the urban area, the calculating methods should be carefully chosen based on the morphology characteristics of the location.


Solar Energy ◽  
2015 ◽  
Vol 113 ◽  
pp. 258-271 ◽  
Author(s):  
Zaki A. Al-Mostafa ◽  
Hamdy K. Elminir ◽  
Ahmed Abulwfa ◽  
Saad M. Al-Shehri ◽  
Fawaz A. Alshehri ◽  
...  

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