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A simple clear skies model for the luminous efficacy of diffuse solar radiation on inclined surfaces

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  • Robledo, L.
  • Soler, A.

Abstract

In the present work we study the luminous efficacy of diffuse solar radiation incident on vertical surfaces for a clear sky and mean hourly values of diffuse irradiance and diffuse illuminance. We develop a model easy to use, similar to a model previously obtained for horizontal surfaces. To develop the present model for vertical surfaces we assume that the slope of the surface influences diffuse illuminance and diffuse irradiance in the same way. As a consequence of this hypothesis, the luminous efficacy of diffuse solar radiation is assumed to be the same for both horizontal and inclined surfaces.

Suggested Citation

  • Robledo, L. & Soler, A., 2002. "A simple clear skies model for the luminous efficacy of diffuse solar radiation on inclined surfaces," Renewable Energy, Elsevier, vol. 26(2), pages 169-176.
    • Handle: RePEc:eee:renene:v:26:y:2002:i:2:p:169-176
    DOI: 10.1016/S0960-1481(01)00129-X
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    References listed on IDEAS

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    1. Soler, A. & Robledo, L., 2000. "Global luminous efficacies on vertical surfaces for all sky types," Renewable Energy, Elsevier, vol. 19(1), pages 61-64.
    2. Robledo, Luis & Soler, Alfonso, 2000. "Luminous efficacy of direct solar radiation for clear skies," Energy, Elsevier, vol. 25(8), pages 689-701.
    3. Robledo, Luis & Soler, Alfonso, 2001. "Luminous efficacy of direct solar radiation for all sky types," Energy, Elsevier, vol. 26(7), pages 669-677.
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    Cited by:

    1. Salazar, Germán A. & Hernández, Alejandro L. & Saravia, Luis R., 2010. "Practical models to estimate horizontal irradiance in clear sky conditions: Preliminary results," Renewable Energy, Elsevier, vol. 35(11), pages 2452-2460.

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