Comparison of measurement techniques for the determination of circumsolar irradiance | Zendy

Stefan Wilbert | Zendy; Robert PitzPaal | Zendy; J. Jaus | Zendy

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Comparison of measurement techniques for the determination of circumsolar irradiance

Author(s) -

Stefan Wilbert,

Robert PitzPaal,

J. Jaus

Publication year - 2013

Publication title -

aip conference proceedings

Language(s) - English

Resource type - Conference proceedings

SCImago Journal Rank - 0.177

H-Index - 75

eISSN - 1551-7616

pISSN - 0094-243X

DOI - 10.1063/1.4822222

Subject(s) - photometer , sun photometer , radiation , irradiance , aeronet , remote sensing , environmental science , solar irradiance , optics , meteorology , physics , aerosol , geology

Depending on the present atmospheric conditions a considerable part of the direct solar radiation can be scattered into the circumsolar region closely surrounding the solar disk. This forward scatteredradiation, the circumsolar radiation, is widely detected by pyrheliometers, while concentrating solar collectors can only use a concentrator specific fraction of it. This lower response to circumsolar radiation can lead to systematic overestimations of the collector performance. We use a Sun and Aureole Measurement system (SAM) combined with AERONET sun photometer measurements to determine the circumsolar radiation, and compare the results to a newly developed 2-channel pyrheliometer instrument BPI-CSR460

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