Estimation of daily global solar radiation from measured temperatures at Cañada de Luque, Córdoba, Argentina

Almorox Alonso, Javier and Bocco, Mónica and Willington, Enrique (2013). Estimation of daily global solar radiation from measured temperatures at Cañada de Luque, Córdoba, Argentina. "Renewable Energy", v. 60 ; pp. 382-387. ISSN 0960-1481. https://doi.org/10.1016/j.renene.2013.05.033.

Description

Title: Estimation of daily global solar radiation from measured temperatures at Cañada de Luque, Córdoba, Argentina
Author/s:
  • Almorox Alonso, Javier
  • Bocco, Mónica
  • Willington, Enrique
Item Type: Article
Título de Revista/Publicación: Renewable Energy
Date: December 2013
ISSN: 0960-1481
Volume: 60
Subjects:
Faculty: E.T.S.I. Agrónomos (UPM) [antigua denominación]
Department: Edafología [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Solar radiation is the most important source of renewable energy in the planet; it's important to solar engineers, designers and architects, and it's also fundamental for efficiently determining irrigation water needs and potential yield of crops, among others. Complete and accurate solar radiation data at a specific region are indispensable. For locations where measured values are not available, several models have been developed to estimate solar radiation. The objective of this paper was to calibrate, validate and compare five representative models to predict global solar radiation, adjusting the empirical coefficients to increase the local applicability and to develop a linear model. All models were based on easily available meteorological variables, without sunshine hours as input, and were used to estimate the daily solar radiation at Cañada de Luque (Córdoba, Argentina). As validation, measured and estimated solar radiation data were analyzed using several statistic coefficients. The results showed that all the analyzed models were robust and accurate (R2 and RMSE values between 0.87 to 0.89 and 2.05 to 2.14, respectively), so global radiation can be estimated properly with easily available meteorological variables when only temperature data are available. Hargreaves-Samani, Allen and Bristow-Campbell models could be used with typical values to estimate solar radiation while Samani and Almorox models should be applied with calibrated coefficients. Although a new linear model presented the smallest R2 value (R2 = 0.87), it could be considered useful for its easy application. The daily global solar radiation values produced for these models can be used to estimate missing daily values, when only temperature data are available, and in hydrologic or agricultural applications.

More information

Item ID: 20202
DC Identifier: http://oa.upm.es/20202/
OAI Identifier: oai:oa.upm.es:20202
DOI: 10.1016/j.renene.2013.05.033
Official URL: http://www.sciencedirect.com/science/article/pii/S0960148113002784
Deposited by: Memoria Investigacion
Deposited on: 23 Sep 2013 17:03
Last Modified: 31 Dec 2015 23:56
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