New methodology of solar radiation evaluation using free access databases in specific locations

Pagola, Iñigo; Gastón, Martín; Fernández-Peruchena, Carlos M.; Moreno-Tejera, Sara; Ramírez, Lourdes

doi:10.1016/j.renene.2010.04.034

Cited by 17 publications

(12 citation statements)

References 6 publications

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“…For estimating the long term values of solar radiation, two main methodologies are used: the weighted mean of different databases [7,8], and the use of long series of solar irradiance insolation data estimated by satellite, or from Numerical Weather Prediction Models.…”

Section: Current Methodologies For the Generation Of High-frequency Dmentioning

confidence: 99%

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Generation of Series of High Frequency DNI Years Consistent with Annual and Monthly Long-term Averages using Measured DNI Data

2014

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Section: Current Methodologies For the Generation Of High-frequency Dmentioning

confidence: 99%

“…Since KSI(%) is below 100% when frequency distributions are close to each other [7], for our purposes any value of KSI(%) below 100 is considered to be a proof that the synthetic years cannot be statistically distinguished from the real high-frequency years measured at the location.…”

Section: Testing the Validity Of The New Proposed Methodology For Genmentioning

confidence: 99%

Generation of Series of High Frequency DNI Years Consistent with Annual and Monthly Long-term Averages using Measured DNI Data

2014

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“…Land-measured daily irradiation is collected from the Agroclimatic Information System for Irrigation (SIAR) [24] a free-download database operating since 1999, covering the majority of the irrigated area of Spain [25][26][27][28][29]. This network belongs to the Ministry of Agriculture, Food and Environment of Spain, as a tool to predict and study meteorological variables for agriculture.…”

Section: Siarmentioning

confidence: 99%

Comparative assessment of global irradiation from a satellite estimate model (CM SAF) and on-ground measurements (SIAR): A Spanish case study

Antoñanzas-Torres

Cañizares²,

David

2013

Renewable and Sustainable Energy Reviews

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An analysis and comparison of daily and yearly solar irradiation from the satellite CM SAF database and a set of 301 stations from the Spanish SIAR network is performed using data of 2010 and 2011. This analysis is completed with the comparison of the estimations of effective irradiation incident on three different tilted planes (fixed, two axis tracking, north-south horizontal axis) using irradiation from these two data sources. Finally, a new map of yearly values of irradiation both on the horizontal plane and on inclined planes is produced mixing both sources with geostatistical techniques (kriging with external drift, KED)The Mean Absolute Difference (MAD) between CM SAF and SIAR is approximately 4% for the irradiation on the horizontal plane and is comprised between 5% and 6% for the irradiation incident on the inclined planes. The MAD between KED and SIAR, and KED and CM SAF is approximately 3% for the irradiation on the horizontal plane and is comprised between 3% and 4% for the irradiation incident on the inclined planes.The methods have been implemented using free software, available as supplementary material, and the data sources are freely available without restrictions.

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“…These databases are available as a result of international and national projects, such as NASA-SSE [9] by the Atmospheric Science Data Center, which is an example of public domain data source, SoDa [10] by Mines ParisTech that offer free data to some extent only, and Meteonorm [11] by Meteotest as a commercial data source. These databases contain different kinds of solar data [12]:…”

Section: Introductionmentioning

confidence: 99%

Management and exploitation of direct normal irradiance resources for concentrating solar collectors: Algeria as a case study

Mecibah

Boukelia

Benyahia³

2014

Int J Energy Environ Eng

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The use of concentrating solar collectors which are used in solar thermal power plant and concentrated photovoltaic systems implies that these systems only work with the direct normal irradiance (DNI). Unfortunately, DNI ground-based measurements are rarely available at the location of interest, this lack of DNI data contrasts with the availability of global and diffuse horizontal irradiance data (GHI, DHI). Nowadays, several spatial databases that estimate DNI have been developed; however, these databases present uncertainty and provide different values of DNI. In this present study, a proposed methodology for estimating the hourly, monthly mean daily, monthly and annual direct normal irradiance DNI in the presence or absence of measured global and diffuse horizontal irradiances. When applying the proposed method for calculation of DNI for three Algerian ground stations (Algiers, Ghardaia, and Tamanrasset), we obtained better performances than those of the five spatial databases' data, especially for the monthly values. The methodology seems to give a very appropriate way for management and exploitation of DNI resources for the design and analysis of concentrating photovoltaic and thermal systems; and can be applicable to other worldwide locations using empirical equations with new correlation coefficients for estimating direct normal irradiance.

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New methodology of solar radiation evaluation using free access databases in specific locations

Cited by 17 publications

References 6 publications

Generation of Series of High Frequency DNI Years Consistent with Annual and Monthly Long-term Averages using Measured DNI Data

Generation of Series of High Frequency DNI Years Consistent with Annual and Monthly Long-term Averages using Measured DNI Data

Comparative assessment of global irradiation from a satellite estimate model (CM SAF) and on-ground measurements (SIAR): A Spanish case study

Management and exploitation of direct normal irradiance resources for concentrating solar collectors: Algeria as a case study

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