2026-04-22T18:36:39Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/45322024-05-14T09:46:02Zcom_10259_4393com_10259_5086com_10259_2604col_10259_4394

Pérez Burgos, Ana Mª 436 600 0000-0002-6404-5078 Diez Mediavilla, Montserrat 154 500 0000-0002-4957-9530 Alonso Tristán, Cristina 23 500 0000-0003-4733-7391 Rodríguez Amigo, María del Carmen 474 500 0000-0002-4639-4979 2017-07-17T09:01:10Z 2017-07-17T09:01:10Z 2017-03 1941-7012 http://hdl.handle.net/10259/4532 10.1063/1.4981798 Direct solar irradiance has to be determined for the design of many energy applications such as photovoltaic systems and concentration systems, and the generation of solar potential maps for energy use. Knowledge of the accurate values of radiation components in a local area will allow optimal sizing of solar energy conversion systems. The estimated values of direct solar irradiance from models are still necessary at those sites where no measurements are available. In this work, different models used for the estimation of the direct component of solar irradiance are analyzed. First, an evaluation of the performance of eight existing original models was performed from which three were selected. Second, the selected models were calibrated to adapt them to our studied geographical area, which is the important aspect of this work, and an assessment of performance improvements for locally adapted models is reported. Experimental data consisted of hourly horizontal global, direct, and diffuse solar irradiance values, provided by the National Meteorological Agency in Spain (AEMET) for Madrid. Long-term data series, corresponding to a total period of time of 32 years (1980–2011), have been used in this study. Only clear sky models were treated at present. The three selected models were adapted to the specific location of Madrid, and root mean square error (RMSE) and mean-biased error were determined. By comparing the performance in the direct horizontal irradiance estimation from existing original and the corresponding locally adapted models, it is found that the values of RMSE decreased from 9.9% to 5.7% for the Louche model, from 7.8% to 7.4% for the Robledo-Soler model, and finally from 8.8% to 6.7% for the European Solar Radiation Atlas model. Thus, significant improvements can be reached when parametric models are locally adapted. In our case, it is up to approximately 4% for the Louche model. It is expected that calibrated algorithms presented in this work will be applicable to regions of similar climatic characteristics. Spanish Government (grant ENE2011-27511) and the Department of Culture and Education of the Regional Government of Castilla y León, Spain (grant BU358A12-2) application/pdf eng AIP Publishing Journal of renewable and sustainable energy. 2017, V. 9, n. 2, 023703 http://dx.doi.org/10.1063/1.4981798 info:eu-repo/grantAgreement/MINECO/ENE2011-27511 info:eu-repo/grantAgreement/JCyL/BU358A12-2 Electrotecnia Electrical engineering Analysis of solar direct irradiance models under clear-skies: Evaluation of the improvements for locally adapted models info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion info:eu-repo/semantics/openAccess THUMBNAIL Pérez-JRSEBH_2017.pdf.jpg Pérez-JRSEBH_2017.pdf.jpg IM Thumbnail image/jpeg 4892 https://riubu.ubu.es/bitstream/10259/4532/4/P%c3%a9rez-JRSEBH_2017.pdf.jpg e0a637413cc63da5b0c37782ee631c6c MD5 4 ORIGINAL Pérez-JRSEBH_2017.pdf Pérez-JRSEBH_2017.pdf application/pdf 1339071 https://riubu.ubu.es/bitstream/10259/4532/1/P%c3%a9rez-JRSEBH_2017.pdf 9562a0b9d8aeab878705463e9d2de04c MD5 1 LICENSE license.txt license.txt text/plain; charset=utf-8 999 https://riubu.ubu.es/bitstream/10259/4532/2/license.txt b295bcbce42e2caabeb0c623d3860c06 MD5 2 TEXT Pérez-JRSEBH_2017.pdf.txt Pérez-JRSEBH_2017.pdf.txt Extracted text text/plain 51181 https://riubu.ubu.es/bitstream/10259/4532/3/P%c3%a9rez-JRSEBH_2017.pdf.txt 0a1ff2629faf4632990a94e11f579ba4 MD5 3 10259/4532 oai:riubu.ubu.es:10259/4532 2024-05-14 11:46:02.908 Repositorio Institucional de la Universidad de Burgos bubrep@ubu.es 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