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ORIGINAL RESEARCH article
Front. Energy Res.
Sec. Solar Energy
Volume 13 - 2025 | doi: 10.3389/fenrg.2025.1478555
Solar radiation estimation on an inclined surface by sky models in Afar region, Ethiopia
Provisionally accepted- 1 Samara University, Semera, Ethiopia
- 2 Department of physics, Samara Unversity, Samara Ethiopia, Samara, Ethiopia
- 3 Department of Chemical Engineering , Wachamo Unversity, Ethiopia, Hossana, Ethiopia
- 4 School of New Energy, North China Electrical power University, Beijing, China
The aim of this study is to estimate solar radiation on an inclined by sky models. Two anisotropic (direction dependant ) sky models and two isotropic (regardless of the direction) models were used for 12.11°N (latitude) and 40.63°E (longitude) in the Afar region. The model's output was compared to sample statistical test data from the Ethiopian Meteorological Institute. Outperforms all other isotropic and anisotropic models.We found that the Hay and Davies model (HD) received the highest incident solar radiation throughout the course of the year. Finally, the model that has been proposed for the estimation of solar radiation events on a tilted surface is the isotropic, Liu, and Jordan model (LJ), which has the least statistical errors out of all the models and shows good agreement with the estimated data.
Keywords: Isotropic, Anisotropic, solar irradiances, Afar region, Tilted surface, Statistical test
Received: 10 Aug 2024; Accepted: 26 Feb 2025.
Copyright: © 2025 Alemu, Anshebo and Dessie. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence:
Anshebo Getachew Alemu, Samara University, Semera, Ethiopia
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