Diffuse fraction of daily global radiation at Dhahran, Saudi Arabia

Journal Article · Tue Jan 01 00:00:00 EST 1991 · Solar Energy (Journal of Solar Energy Science and Engineering); (USA)

DOI:https://doi.org/10.1016/0038-092X(91)90020-W· OSTI ID:5685099

Elhadidy, M A; Abdel-Nabi, D Y ^[1]

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1. King Fahd Univ. of Petroleum and Minerals, Dhahran (Saudi Arabia)

Relationship between the diffuse fraction of daily global solar radiation and clearness index (the ratio of global to extraterrestrial radiation) is obtained from the radiation data measured at Dhahran (26{degree}32{prime}N, 50{degree}13{prime}E), Saudia Arabia. Two years of daily radiation data calculated from measured one-minute values are used to develop the relationship. Another year of data is used to validate the relationship. Comparison between the present correlation and previous correlations is presented. The present data confirm the seasonal dependence and the location independence of the correlation reported in literature. The diffuse and global solar radiation are presented for dusty and clear days. The results show that the dust significantly increases the diffuse fraction of the global radiation. The diffuse fraction on a typical clear day in March is 0.11, while on a dusty day, in the same month, may be as high as 0.91.

• OSTI ID: 5685099
• Journal Information: Solar Energy (Journal of Solar Energy Science and Engineering); (USA), Vol. 46:2; ISSN 0038-092X
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
SAUDI ARABIA
DIFFUSE SOLAR RADIATION
CORRELATIONS
DATA
DUSTS
MEASURING METHODS
OPACITY
RESOURCE ASSESSMENT
SEASONAL VARIATIONS
SOLAR RADIATION
ASIA
INFORMATION
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
RADIATIONS
SOLAR FLUX
STELLAR RADIATION
VARIATIONS
140100* - Solar Energy- Resources & Availability