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Correlation of a new utilizability function to experimental data for Southwestern Europe

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  • Armenta-Deu, C.
  • De Andrés, M.C.

Abstract

The “utilizability” or φ-curve method is a very useful tool for solar energy systems using conventional flat-plate collectors or CPS's.As Klein showed in his paper [Solar Energy21, 393 (1978)] the generalized φ-curve method has the drawback of significant calculation effortrequired to assess longterm collector performance. Several methods and analytical expressions for non-tracking collectors have been proposed tocompute utilizability values. In this paper two very simple models based on previous work developed by Collares-Pereira and co-workers[Proceedings of the 23rd ISES Solar World Congress, Montreal (1985)] have been tested for several Spanish locations, and correspondingutilizability function parameters have been determined. The results have been compared with those obtained from the adapted version of theoriginal model by Gordon and Zarmi [Solar Energy31, 529, 537 (1983)]. The method has also served as a validation test of the proposed models.

Suggested Citation

  • Armenta-Deu, C. & De Andrés, M.C., 1991. "Correlation of a new utilizability function to experimental data for Southwestern Europe," Renewable Energy, Elsevier, vol. 1(5), pages 571-582.
    • Handle: RePEc:eee:renene:v:1:y:1991:i:5:p:571-582
    DOI: 10.1016/0960-1481(91)90001-6
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