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ID:
090093
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| Publication |
2009.
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| Summary/Abstract |
The measured data of global solar radiation on a horizontal surface, as well as the number of sunshine hours, mean daily ambient temperature, maximum and minimum ambient temperatures, relative humidity and amount of cloud cover, for Jeddah (latitude 21° 42?37?N, longitude 39° 11?12?E), Saudi Arabia for the period 1996-2006 are analyzed. The data are divided into two sets. The sub-data set 1 (1996-2004) are employed to develop empirical correlations between the monthly average of daily global solar radiation fraction (H/H0) and various meteorological parameters. The nonlinear Angström type model developed by Sen and the trigonometric function model proposed by Bulut and Büyükalaca are also evaluated. New empirical constants for these two models have been obtained for Jeddah. The sub-data set 2 (2005, 2006) are then used to evaluate the derived correlations. Comparisons between measured and calculated values of H have been performed. It is indicated that, the Sen and Bulut and Büyükalaca models satisfactorily describe the horizontal global solar radiation for Jeddah. All the proposed correlations are found to be able to predict the annual average of daily global solar radiation with excellent accuracy. Therefore, the long term performance of solar energy devices can be estimated.
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| 2 |
ID:
189692
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| Summary/Abstract |
A massive urban renewal project in Jeddah, the second-largest city in Saudi Arabia, has entailed the demolition of many historic quarters with substantial immigrant and working-class populations. Neighborhoods have been targeted with little warning or provision of compensation or alternative housing for many displaced residents. The project is intended to create modern new districts as part of a national economic agenda, but it risks erasing the unique cosmopolitan character of the Red Sea port city.
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