Sensitivity of global solar irradiance to transposition models: assessing risks associated with model discrepancies
Küçük Resim Yok
Tarih
2024-12-29
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Estimating solar irradiance is essential for solar energy systems evaluations, energy audit of buildings and. Global and sky-diffuse horizontal irradiances are measured by meteorological stations and satellites. Global horizontal solar irradiance is converted into a global tilted solar irradiance using transposition models (TMs). Despite its importance, many sites—especially isolated rural areas in need of sustainable energy sources—have a conspicuous dearth of information regarding these models. Significant errors can occur when choosing the incorrect TM for feasibility assessments or determining the optimum tilt angles (β) for solar collectors. A novel theory (Risky Index theory) for determining the least risky TM is introduced in this work. To evaluate and validate the proposed theory, eight commonly used TMs from literature, database platforms and software were chosen and tested on 133 sites with various climatic and geographical conditions in the Northern Hemisphere. The study concludes that risk index (RI) is <10 % for all models when the collector is facing south with low tilt angles (β<40°). However, for 40°< β<60° the RI rises above 15 %, and it becomes significant (RI<50 %) as β becomes close to vertical plane. The least risky TM was determined for each site. The results matched satisfactorily with other researchers’ outputs without exceeding 3.5 % of error. A unique TM has been recommended for the entire world corresponding to each interval of β.
Açıklama
Anahtar Kelimeler
Anisotropic models, Global solar irradiance, Isotropic models, Risk index, Transposition models
Kaynak
e-Prime - Advances in Electrical Engineering, Electronics and Energy
WoS Q Değeri
Scopus Q Değeri
Q3
Cilt
11
Sayı
Künye
Yasser F. Nassar, Hala J. El-Khozondar, Mohamed M. Khaleel, Abdussalam A. Ahmed, Abdulgader H. Alsharif, Monaem Elmnifi, Mark Amoah Nyasapoh, Sensitivity of global solar irradiance to transposition models: assessing risks associated with model discrepancies,
e-Prime - Advances in Electrical Engineering, Electronics and Energy, Volume 11, 2025,
100887, ISSN 2772-6711, https://doi.org/10.1016/j.prime.2024.100887.
