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Träfflista för sökning "WFRF:(Lindberg Eva) srt2:(1985-1989)"

Sökning: WFRF:(Lindberg Eva) > (1985-1989)

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1.
  • Broman, Lars, et al. (författare)
  • Optical properties of the Czechoslovakian Fresnel lens measured using a laser beam
  • 1989
  • Ingår i: ISES Solar World Congress. - Kobe, Japan.
  • Konferensbidrag (refereegranskat)abstract
    • Linear glass Fresnel lenses have been experimentally investigated by means of a narrow He-Ne laser beam, both at normal incidence and at various combinations of meridional and sagittal angles of incidence. Both rays incident on the flat and on the grooved side were studied. Results were compared with previous ray tracing results by Franc et al. The experiments suggest, contrary to ray tracing, that the grooves should face the sun in other than sun-tracking applications.
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  • Broman, Lars, et al. (författare)
  • Use of nonimaging concentrators for moderate concentration of sunlight onto PV cells
  • 1989
  • Ingår i: 9thy European Photovoltaics Solar Energy Conference. - Freiburg, Tyskland.
  • Konferensbidrag (refereegranskat)abstract
    • The square cornet type nonimaging concentrator has been shown useful for moderate concentration of sunlight onto photovoltaic solar cells, since it creates no hot spots at the exit aperture. In this paper are presented the mathematical formulas on which the cornet designs are based, results from computer simulations on overall cornet performance compared with measurements as well as exit aperture intensity variations, measured optical concentration ratios under controlled circumstances, and cell temperature measurements under realistic circumstances. In an Appendix are given performance curves for a large number of cornets as determined from computer simulations, covering the useful range of concentration factors and acceptance angles.
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