Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976cmes.rept...39d&link_type=abstract
Cooperation Mediterraneenne pour l'Energie Solaire, Revue Internationale d'Heliotechnique, 1st Quarter, 1976, p. 39-48.
Astronomy and Astrophysics
Astronomy
Energy Technology, Solar Cells, Solar Collectors, Adjusting, Angular Distribution, Diffuse Radiation, Economic Analysis, Equipment Specifications, Grooves, Mirrors, Solar Reflectors, Trapezoids
Scientific paper
Specifications of stationary (or periodically adjustable) E-W concentrators for solar cells are drawn. The geometrical gain of simple trapezoidal grooves consisting of two symmetrical mirrors is studied. The astronomical motion of the sun throughout the year is then introduced, and practical yearly average gain is calculated. The influence of an optimized angular tilting position of the concentrator of the practical reflection coefficient, and of the diffused light are examined. A monthly adjustable system gives a yearly gain near to 3 in ideal conditions, of 2.5 with a practical reflection coefficient of 0.9, and of more than 2 with some reasonable amount of diffused light. With current prices of solar panels, such a system brings a saving up to 50 per cent of solar electrical energy cost.
Durand H.
Hily C.
Hunzinger J.-J.
Michel Jean
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