General Information
    • ISSN: 1793-821X (Print)
    • Abbreviated Title: J. Clean Energy Technol.
    • Frequency: Quarterly
    • DOI: 10.18178/JOCET
    • Editor-in-Chief: Prof. Haider F. Abdul Amir
    • Executive Editor: Ms. Jennifer Zeng
    • Abstracting/ Indexing:  INSPEC (IET), Electronic Journals Library, Chemical Abstracts Services (CAS), Ulrich's Periodicals Directory, Google Scholar, ProQuest, CNKI.
    • E-mail:
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Universiti Malaysia Sabah, Malaysia.
I would like to express my appreciation to all the reviewers and editors, who have been working
very hard to ensure the quality of the journal. It's my honor to work with such a wonderful team.

JOCET 2017 Vol.5(5): 389-393 ISSN: 1793-821X
DOI: 10.18178/JOCET.2017.5.5.403

Estimation of Monthly Average Hourly Global Solar Radiation from the Daily Value in Çanakkale, Turkey

Özge Ayvazoğluyüksel and Ümmühan Başaran Filik
Abstract—Solar energy has come into prominence due to its sustainability, emission-free and ease of use considering the harmful nature of fossil resources in recent years. Accurate information on global radiation is essential to achieve the goal of planning and projection of a solar power system. Global solar radiation measurements provided by meteorology lack of reliability and some of the data are missing. At this point, global solar radiation estimation has an important role in designing energy systems that are based on solar energy. In this study, six different global radiation models are considered to estimate the monthly average hourly global radiation from the daily value in Çanakkale, which is located in the northwest of Turkey. The models are validated with hourly global radiation measurements provided by the Turkish State Meteorological Service. Based on the analysis of mean absolute bias error (MABE), root mean square error (RMSE), mean bias error (MBE) and t-statistical test, accuracy of the existing models is obtained. The results indicate that the Collares - Pereira and Rabl model modified by Gueymard (CPRG) is the most accurate one, and this model is proposed to obtain the hourly global radiation averaged over the months in elsewhere that has the similar climate with the northwest of Turkey.

Index Terms—Global solar radiation, hourly radiation estimation, CPRG model.

Ö. Ayvazoğluyüksel and Ü. Başaran Filik are with the Electrical and Electronics Engineering Department, Anadolu University, Eskişehir, Turkey (e-mail:,


Cite:Özge Ayvazoğluyüksel and Ümmühan Başaran Filik, "Estimation of Monthly Average Hourly Global Solar Radiation from the Daily Value in Çanakkale, Turkey," Journal of Clean Energy Technologies vol. 5, no. 5, pp. 389-393, 2017.

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