Study of Linke's Turbidity Values at Some Iraqi Sites Based on Solar Radiation

ali shkhair younus, Sahib Neamh Abdul Wahid

Abstract


Turbidity was calculated by solar irradiance (Linke's Turbidity) for sixteen Iraqi sites. These locations were distributed among middle, north and south. These results have been updated depending on direct solar radiation, diffused solar radiation, total solar radiation, and solar constant as inputs for mathematical models in computer programs. Taking into account the hours of actual and theoretical brightness of the sun, the angle of the sun's rays, and the altitude angle of the sun during the months of the year.

           The results showed that the turbidity in the Iraqi sites considered in this research depends mainly on the months of the year regardless of the site location at the north, middle or south of Iraq. The turbidity has the greatest values during the winter season, specifically in December, where the average turbidity ranged for those sites. In this month (4.85 - 5.73), then January (4.75 - 5.72), it begins to decrease until the value of turbidity in most sites reaches its minimum level in the month of September, where the average turbidity of the studied sites is ranged (except for the site of Najaf) in this month (2.82 - 3.10). While the Najaf site was unique in registering the minimum average value of turbidity in the month of June by (3.25). The results showed that the turbidity in all the sites included in this research ranges between (2.82 - 5.73) during the year.

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References


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