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Measurement of Solar Radiance Profiles with the Sun and Aureole Measurement Systems

Wilbert, Stefan and Reinhardt, Bernhard and DeVore, J and Röger, Marc and Pitz-Paal, Robert and Gueymard, Christian A. and Buras, R. (2013) Measurement of Solar Radiance Profiles with the Sun and Aureole Measurement Systems. Journal of Solar Energy Engineering (135). American Society of Mechanical Engineers (ASME). doi: 10.1115/1.4024244. ISSN 0199-6231.

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Official URL: http://solarenergyengineering.asmedigitalcollection.asme.org/


Due to forward scattering of direct sunlight in the atmosphere, the circumsolar region closely surrounding the solar disk looks very bright. The radiation coming from this region, the circumsolar radiation, is in large part included in common direct normal irradiance (DNI) measurements, but only partially intercepted by the receivers of focusing collectors. This effect has to be considered in the performance analysis of concentrating collectors in order to avoid overestimation of the intercepted irradiance. At times, the overestimation reaches more than 10% for highly concentrating systems even for sky conditions with relevant DNI above 200 W/m2. The amount of circumsolar radiation varies strongly with time, location and sky conditions. However, no representative sunshape measurements exist for locations that are now of particular interest for concentrating solar power (CSP) or concentrating photovoltaics (CPV). A new sunshape measurement system is developed and analyzed in this study. The system consists of the sun and aureole measurement instrument (SAM), an AERONET sun photometer and postprocessing software. A measurement network is being created with the presented system. The uncertainty of this system is significantly lower than what was obtained with previous devices. In addition, the spectral optical properties of circumsolar radiation are determined. As a result, the necessary information for CSP and CPV systems, and a basis for the development of modeling methods for circumsolar radiation, can now be achieved.

Item URL in elib:https://elib.dlr.de/85174/
Document Type:Article
Title:Measurement of Solar Radiance Profiles with the Sun and Aureole Measurement Systems
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Wilbert, StefanUNSPECIFIEDhttps://orcid.org/0000-0003-3573-3004UNSPECIFIED
Gueymard, Christian A.Solar Consulting Services, New Smyrna Beach, FL, USAUNSPECIFIEDUNSPECIFIED
Buras, R.Meteorologisches Institut MünchenUNSPECIFIEDUNSPECIFIED
Date:November 2013
Journal or Publication Title:Journal of Solar Energy Engineering
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
Publisher:American Society of Mechanical Engineers (ASME)
Series Name:ASME
Keywords:circumsolar radiation, sunshape, DNI, SMARTS, atmospheric scattering, aerosols
HGF - Research field:Energy
HGF - Program:Renewable Energies
HGF - Program Themes:Concentrating Solar Systems (old)
DLR - Research area:Energy
DLR - Program:E SF - Solar research
DLR - Research theme (Project):E - Qualifizierung (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Solar Research > Qualifizierung
Deposited By: Kruschinski, Anja
Deposited On:15 Nov 2013 16:13
Last Modified:29 Nov 2023 12:07

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