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Global isolation at Gaborone measured at 30° tilt angle using a standardised high performance silicon solar cell

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  • Prah, Joseph Henry

Abstract

Between the period June 1991 and August 1992, the global solar irradiance on the campus of the University of Botswana at Gaborone, was monitored continuously employing a simple circuitry which incorporates a high performance silicon solar cell (HPC) as a radiometer (vide reference 8, for a preliminary report). The solar cell, a 2x2 cm2 violet cell, was mounted inclined at 30° to the horizontal and faced north. In this paper, the variation of the mean monthly global irradiance, as measured at a tilt angle of 30° over a 12 month period will be compared with data from Sebele, a national observatory, about 10 km away, which employes a conventional thermopile radiometer mounted horizontally. The data from the experimental arrangements will also be weighed against theoretical calculations by Andringa11. The paper concludes by establishing a high correlation between experimental and theoretical data on one hand and gives conclusive evidence for the detector angular tilt effect9 on the other.

Suggested Citation

  • Prah, Joseph Henry, 1994. "Global isolation at Gaborone measured at 30° tilt angle using a standardised high performance silicon solar cell," Renewable Energy, Elsevier, vol. 5(5), pages 1509-1513.
    • Handle: RePEc:eee:renene:v:5:y:1994:i:5:p:1509-1513
    DOI: 10.1016/0960-1481(94)90198-8
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