Measurements of the air pollution effects on the color portions of solar radiation at Helwan, Egypt

M.A.Mosalam Shaltout, M.M. Ghonim and A.H. Hassan

Renewable Energy, 1996, vol. 9, issue 1, 1279-1282

Abstract: The paper contains examples on the distribution of the color percentage or the color portion during very clear days and others polluted days for each season from sunrise (SR) to sunset (SS) and the difference between them. Some important parameters such as the clearness index (KT), diffuse fraction (KD), relative humidity (R.H) and temperature (T) effect on the direct color portions. The monthly variation are given for the four major color bands B1 (530 nm > λ), B2 (530 nm<λ<630 nm), B3 (630nm<λ<695 nm), B4 (λ > 695 nm) due to the meteorological and the environmental factors as T, R..H, and visibility. The data measurements are carried out through two years from June 1991 to May 1993, at Helwan, (Lat. 29° 52′ N, Long. 31° 20′ E), which is considered as the largest industrial region in Egypt.

Keywords: Direct solar radiation; color portion; air pollution (search for similar items in EconPapers)
Date: 1996
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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:9:y:1996:i:1:p:1279-1282

DOI: 10.1016/0960-1481(96)88510-7

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