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Solar-blind pyrometric temperature measurement under concentrated solar irradiation

Pfänder, Markus and Hernandez, Daniel and Neumann, Andreas and Lüpfert, Eckhard and Wojciech, Lipiński and Tschudi, Hans-Rudolf and Ballestrín, Jesús (2006) Solar-blind pyrometric temperature measurement under concentrated solar irradiation. In: 13th International symposium on concentrated solar power and chemical energy technologies. SolarPACES 2006, Seville, Spain.

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The surface temperature distribution of high temperature solar materials is a key parameter in concentrating solar thermal applications. As contact thermometry is often not appropriate in the presence of high-flux solar irradiation, pyrometric techniques can be adopted. However, depending on the optical properties of the sample, special measurement treatments are required to eliminate the bias in the pyrometric measurement resulting from the single and multiple surface reflections of incoming solar radiation. Several pyrometric methodologies for particular applications have been reported in literature. In this paper a more general approach to this technique and its adaptation for the use in high temperature solar receivers is presented. The measurement requirements including the necessity and type of a selective filter are obtained from the analysis of the spectral bi-directional reflectance and the operational range of temperature. According to these conditions a classification of materials encountered in solar receivers is given and adequate measurement methodologies are suggested for each type of receiver and temperature range.

Document Type:Conference or Workshop Item (Speech, Paper)
Title:Solar-blind pyrometric temperature measurement under concentrated solar irradiation
AuthorsInstitution or Email of Authors
Pfänder, MarkusUNSPECIFIED
Hernandez, DanielUNSPECIFIED
Neumann, AndreasUNSPECIFIED
Lüpfert, EckhardUNSPECIFIED
Wojciech, LipińskiUNSPECIFIED
Tschudi, Hans-RudolfUNSPECIFIED
Ballestrín, JesúsUNSPECIFIED
Date:June 2006
Journal or Publication Title:13th International symposium on concentrated solar power and chemical energy technologies
Refereed publication:Yes
In ISI Web of Science:No
Keywords:solar blind, solar thermal high temperature, pyrometric temperature measurement, error budget analysis, diffusivity factor
Event Title:SolarPACES 2006
Event Location:Seville, Spain
Event Type:international Conference
HGF - Research field:Energy
HGF - Program:Renewable Energies
HGF - Program Themes:E SF - Solar research (old)
DLR - Research area:Energy
DLR - Program:E SF - Solar research
DLR - Research theme (Project):E - Solare Hochtemperatursysteme (old)
Location: other
Institutes and Institutions:Institute of Technical Thermodynamics > Solar Research
Deposited By: Markus Pfänder
Deposited On:04 Jan 2007
Last Modified:27 Apr 2009 13:04

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