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Solar insolation upon the Yemen Arab Republic

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  • Al-Motawakel, M. K.
  • Norton, B.
  • Probert, S. D.
  • McVeigh, J. C.

Abstract

Diurnal global insolation was measured over a 3-year period with a precision pyranometer at Sana'a University's solar station--latitude, 15°N; longitude, 44° E and 2210 m above sea level. Comparison has been made with predictions obtained from three different empirical models proposed by earlier investigators. Durations of sunshine hours, in addition to geographical latitude and altitude above mean sea level, are the only model inputs required. The calculated values obtained from a modified version of Exell's empirical formulae gave agreement to within ±6 per cent with the measured data. The predictions from the regression equation of Page3 and the relation proposed by Barbaro et al.6 agreed to within ±10 per cent with the measured solar radiation intensities.

Suggested Citation

  • Al-Motawakel, M. K. & Norton, B. & Probert, S. D. & McVeigh, J. C., 1983. "Solar insolation upon the Yemen Arab Republic," Applied Energy, Elsevier, vol. 15(2), pages 139-152.
    • Handle: RePEc:eee:appene:v:15:y:1983:i:2:p:139-152
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    1. Abdul-Aziz, Jamil & A-Nagi, Abdo & Zumailan, Abubaker A.R., 1993. "Global solar radiation estimation from relative sunshine hours in Yemen," Renewable Energy, Elsevier, vol. 3(6), pages 645-653.

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