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Investigation of solar declination

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  • Mihelić-Bogdanić, Alka
  • Budin, Rajka
  • Filipan, Veljko

Abstract

A new expression for solar declination angle calculation has been developed using data for four years of periodical changes. The accuracy of the proposed formula related to astronomical ephemerides is obtained using the method of the minimum sum of square errors. The calculated values vary between 1.285 and 2.776° for the selected whole year while the value for four years is 6.686°. The mean bias error differs between −0.009 and −0.050°. The standard deviation is 0.128 and 0.181, respectively. The equation proposed in this study can easily be used for solar declination computation for each day of a selected year.

Suggested Citation

  • Mihelić-Bogdanić, Alka & Budin, Rajka & Filipan, Veljko, 1996. "Investigation of solar declination," Renewable Energy, Elsevier, vol. 7(3), pages 271-277.
    • Handle: RePEc:eee:renene:v:7:y:1996:i:3:p:271-277
    DOI: 10.1016/0960-1481(95)00135-2
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