This paper describes the results of an intercomparison of spectroradiometers for global (GNI) and direct (DNI) normal incidence irradiance in the visible (VIS) and near infrared (NIR) spectral regions together with an assessment of the impact these results may have on the estimation of the short circuit current (Isc) calibration of photovoltaic devices and on the spectral mismatch calculation. The intercomparison was conducted in the framework of the European project Apollon with the additional participation of external partners from the Italian project for the long term monitoring of solar radiation for photovoltaics. Six institutions and six spectroradiometer systems, representing different technologies and manufacturers, were involved. All instruments were mounted on high accuracy solar trackers to measure GNI and, for a restricted sub-group of four instruments, DNI when equipped with proper collimators. Prior to the intercomparison all participating partners calibrated their own instrument(s) according to their usual procedures in order to verify the entire measuring and traceability chain.
GALLEANO Roberto;
ZAAIMAN Willem;
VIRTUANI Alessandro;
PAVANELLO Diego;
MORABITO Paolo;
MINUTO Alessandro;
SPENA Angelo;
BARTOCCI Simona;
FUCCI Raffaele;
LEANZA Gianni;
FASANARO Daniela;
CATENA Mario;
2014-10-10
WILEY-BLACKWELL
JRC74094
1062-7995,
http://onlinelibrary.wiley.com/doi/10.1002/pip.2361/abstract,
https://publications.jrc.ec.europa.eu/repository/handle/JRC74094,
10.1002/pip.2361,
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