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Solar radiation for Shiraz, Iran: a comparative study for two periods

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  • Yaghoubi, M.A.
  • Sabzevari, A.

Abstract

Instantaneous solar radiation data read from the chart of global solar radiation on a horizontal surface as well as sunshine hours in Shiraz during two periods (1980–1983 and 1988–1990) are analysed and compared with solar conditions in the early 1970s. It is apparent from the recorded data and subsequent analysis that while this area still possesses a relatively high abundance of sunshine, there has been a gradual decay in clearness index. Frequency of clear sky days, the average daily irradiation and the mean cumulative annual irradiation for the two periods under study are presented and a decrease in solar radiation received on a horizontal surface due to down grading of Shiraz from the clear sky conditions enjoyed in the 1960s and 1970s is demonstrated.

Suggested Citation

  • Yaghoubi, M.A. & Sabzevari, A., 1993. "Solar radiation for Shiraz, Iran: a comparative study for two periods," Renewable Energy, Elsevier, vol. 3(6), pages 725-729.
    • Handle: RePEc:eee:renene:v:3:y:1993:i:6:p:725-729
    DOI: 10.1016/0960-1481(93)90079-V
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    Cited by:

    1. Yaghoubi, M.A. & Sabzevari, A., 1996. "Further data on solar radiation in Shiraz, Iran," Renewable Energy, Elsevier, vol. 7(4), pages 393-399.
    2. Mehrenjani, Javad Rezazadeh & Gharehghani, Ayat & Ahmadi, Samareh & Powell, Kody M., 2023. "Dynamic simulation of a triple-mode multi-generation system assisted by heat recovery and solar energy storage modules: Techno-economic optimization using machine learning approaches," Applied Energy, Elsevier, vol. 348(C).

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