JPEE  Vol.2 No.7 , July 2014
Distribution of Solar Irradiance on Inclined Surfaces Due to the Plane of the Ground
Abstract: Measurements of solar radiation are ordinarily made on horizontal planes recording global, diffuse and reflected components. The beam component and distribution of the global radiation on tilted planes can be calculated via the said components, as the position of the Sun in the sky’s sphere is known. Another ordinary procedure is measuring beam and diffuse components and calculating global radiation. These measurements require stationary equipment and in such a way it is difficult to study the influence of different grounds on the distribution of radiation on the inclined surfaces due to the ground. This distribution has some importance in civil engineering, but it is not popular in the field of solar radiation investigations. Present paper shows how this distribution can be calculated measuring only global irradiance on the horizontal and vertical planes. Such an approach, which is valid in clear-sky and overcast conditions, allows the use of a portable measuring device and studies of different grounds. The coincidence of the calculated values with the actual is good, except for snow-cover and discrete cloud, which do not correspond to the isotropic sky and ground models.
Cite this paper: Tomson, T. and Voll, H. (2014) Distribution of Solar Irradiance on Inclined Surfaces Due to the Plane of the Ground. Journal of Power and Energy Engineering, 2, 1-10. doi: 10.4236/jpee.2014.27001.

[1]   Thalfeldt, M., Pikas, H., Kurnitski, J. and Voll, H. (2013) Façade Design Principles for Nearly Zero Energy Buildings in a Cold Climate. Energy and Buildings, 67, 309-321.

[2]   Voll, H. and Koiv, T.-A. (2009) Daylight Availability and Cooling in Commercial Buildings—The Influence of Façade Design. WEAS Transactions on Advances in Engineering Education, 6, 316-326.

[3]   Ineichen, P., Guisan, O. and Perez, R. (1990) Ground-Reflected Radiation and Albedo. Solar Energy, 44, 207-214.

[4]   Skartveit, A., Olseth, J.A. and Tuft, M.A. (1998) An Hourly Diffuse Fraction Model with Correction for Variability and Surface Albedo. Solar Energy, 63, 173-183.

[5]   Muneer, T. (2004) Solar Radiaton and Daylight Models. Elsevier Butterworth-Heinemann, Burlington.

[6]   Tomson, T. (2013) Diffuse Solar Radiation in Estonia. Investigation and Usage of Renewable Energy Sources. XV Conference Proceedings, Estonian University of Life Sciences, Tartu, 86-95.

[7]   Liu, B.Y.H. and Jordan, C. (1963) The Long-Term Average Performance of Flat-Plate Solar Energy Collectors: With Design Data for the U.S., Its Outlying Possessions and Canada. Solar Energy, 7, 53-74.

[8]   Quashning, V. and Hanitch, R. (1998) Irradiance Calculations on Shaded Surfaces. Solar Energy, 62, 369-375.

[9]   (2014) Soldata Instruments.

[10]   Tooming, H. (2003) Handbook of Estonian Solar Radiation Climate. EMHI, Tallinn.

[11]   Ohmura, A., Gilgen, H., Hegner, H., Müller, G. and Wild, M. (1998) Baseline Surface Radiation Network (BSRN/WCRP): New Precision Radiometry for Climate Research. Bulletin of the American Meteo-rological Society, 79, 2115-2136.<2115:BSRNBW>2.0.CO;2