Solar radiation estimation on a tilted surface using sky models in the Afar region of Ethiopia
The aim of this study is to estimate solar radiation on an inclined surface using sky models. Two anisotropic (direction dependent) and two isotropic (independent of direction) sky models were used for 12.11°N (latitude) and 40.63°E (longitude) in the Afar region of Ethiopia. The sky model outputs w...
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Frontiers Media S.A.
2025-04-01
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| Series: | Frontiers in Energy Research |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fenrg.2025.1478555/full |
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| author | Anshebo Getachew Alemu Teketel Alemu Anshebo Bizuayehu Bogale Dessie |
| author_facet | Anshebo Getachew Alemu Teketel Alemu Anshebo Bizuayehu Bogale Dessie |
| author_sort | Anshebo Getachew Alemu |
| collection | DOAJ |
| description | The aim of this study is to estimate solar radiation on an inclined surface using sky models. Two anisotropic (direction dependent) and two isotropic (independent of direction) sky models were used for 12.11°N (latitude) and 40.63°E (longitude) in the Afar region of Ethiopia. The sky model outputs were compared to sample statistical test data from the Ethiopian Meteorological Institute and found to exceed expectations in all cases. We found that the Hay and Davies model predicted the highest incident solar radiation throughout the year. Finally, the model that we propose for estimation of solar radiation events on a tilted surface is the Liu and Jordan (LJ) isotropic model, which has the fewest statistical errors out of all the models evaluated in this study and shows good agreement with the estimated data. |
| format | Article |
| id | doaj-art-d30b5e326d4a4e6aadf03b5e4d0dae70 |
| institution | DOAJ |
| issn | 2296-598X |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Energy Research |
| spelling | doaj-art-d30b5e326d4a4e6aadf03b5e4d0dae702025-08-20T03:08:35ZengFrontiers Media S.A.Frontiers in Energy Research2296-598X2025-04-011310.3389/fenrg.2025.14785551478555Solar radiation estimation on a tilted surface using sky models in the Afar region of EthiopiaAnshebo Getachew Alemu0Teketel Alemu Anshebo1Bizuayehu Bogale Dessie2Department of Physics, Samara University of Applied Science, Samara, EthiopiaDepartment of Chemical Engineering, Wachamo University, Hossana, EthiopiaDepartment Electrical and Computer Engineering, Samara University of Applied Science, Samara, EthiopiaThe aim of this study is to estimate solar radiation on an inclined surface using sky models. Two anisotropic (direction dependent) and two isotropic (independent of direction) sky models were used for 12.11°N (latitude) and 40.63°E (longitude) in the Afar region of Ethiopia. The sky model outputs were compared to sample statistical test data from the Ethiopian Meteorological Institute and found to exceed expectations in all cases. We found that the Hay and Davies model predicted the highest incident solar radiation throughout the year. Finally, the model that we propose for estimation of solar radiation events on a tilted surface is the Liu and Jordan (LJ) isotropic model, which has the fewest statistical errors out of all the models evaluated in this study and shows good agreement with the estimated data.https://www.frontiersin.org/articles/10.3389/fenrg.2025.1478555/fullisotropic sky modelanisotropic sky modelsolar irradianceAfar regiontilted surfacestatistical test |
| spellingShingle | Anshebo Getachew Alemu Teketel Alemu Anshebo Bizuayehu Bogale Dessie Solar radiation estimation on a tilted surface using sky models in the Afar region of Ethiopia Frontiers in Energy Research isotropic sky model anisotropic sky model solar irradiance Afar region tilted surface statistical test |
| title | Solar radiation estimation on a tilted surface using sky models in the Afar region of Ethiopia |
| title_full | Solar radiation estimation on a tilted surface using sky models in the Afar region of Ethiopia |
| title_fullStr | Solar radiation estimation on a tilted surface using sky models in the Afar region of Ethiopia |
| title_full_unstemmed | Solar radiation estimation on a tilted surface using sky models in the Afar region of Ethiopia |
| title_short | Solar radiation estimation on a tilted surface using sky models in the Afar region of Ethiopia |
| title_sort | solar radiation estimation on a tilted surface using sky models in the afar region of ethiopia |
| topic | isotropic sky model anisotropic sky model solar irradiance Afar region tilted surface statistical test |
| url | https://www.frontiersin.org/articles/10.3389/fenrg.2025.1478555/full |
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