' A Financial Evaluation of a Multiple Inclination, Rooftop-Mounted, Photovoltaic System Where Structured Tariffs Apply: A Case Study of a South African Shopping Centre,'Įnergies, MDPI, vol. ' Optimum azimuth and inclination angle of BIPV panel owing to different factors influencing the shadow of adjacent building,' ' Optimal orientation angles for maximizing energy yield for solar PV in Saudi Arabia,' ' Optimal solar tree design for increased flexibility in seasonal energy extraction,'

Dey, Sumon & Lakshmanan, Madan Kumar & Pesala, Bala, 2018.

36(12), pages 3433-3438.įull references (including those not matched with items on IDEAS) ' An assessment of the solar resource for Durban, South Africa,' ' Comparative study of various correlations in estimating hourly diffuse fraction of global solar radiation,' ' Optimum tilt angle and orientation for solar collectors in Assiut, Egypt,' ' The effect of tilt angle, air pollution on performance of photovoltaic systems in Tehran,'

Asl-Soleimani, E & Farhangi, S & Zabihi, M.S, 2001.

' Optimal tilt-angles for solar collectors used in China,'Īpplied Energy, Elsevier, vol. ' A note on diffuse solar radiation on a tilted surface,'Įnergy, Elsevier, vol.

Pandey, Chanchal Kumar & Katiyar, A.K., 2009.

' Optimum tilt angle for solar collectors used in Cyprus,' The optimum azimuth angle is a function of the longitude angle minus the absolute latitude angle, which suggests that frontal and convective precipitation effects influence the optimum azimuth angle. The effects of tilt and azimuth angles are presented on contour plots, which are convenient for cost analysis and the determination of the annual insolation on building surfaces. Relative to horizontally-fixed collectors, the annual solar insolation is 10% more for optimally-fixed collectors and 45% more for solar-tracking collectors. SolTrace, a ray-tracing software, is used for validation.

The data is used to calculate the annual solar insolation on fixed collectors at all possible installation angles. In this work, recently measured data from nine measuring stations in the Southern African Universities Radiometric Network (SAURAN) equipped with pyranometers and pyrheliometers are considered. Measured data is preferred since the effects of pollution and weather are included. Similar publications on this topic often rely on mathematical models of solar resource rather than measured data. The optimum angles at which a solar collector should be fixed are often debated.

South Africa has seen an increase in local and international investment in solar power. The solar resource in South Africa is among the best in the world.

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