Pyrometric Temperature Measurement on Solar Thermal High Temperature Receivers
Pfänder, Markus and Lüpfert, Eckhard and Heller, Peter (2006) Pyrometric Temperature Measurement on Solar Thermal High Temperature Receivers. Journal of Solar Energy Engineering, 128 (3), pp. 285-292.
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Official URL: http://scitation.aip.org/ASMEJournals/Solar/
The knowledge of the absorber surface temperature distribution is essential for efficient operation and further development of solar thermal high temperature receivers. However, the concentrated solar radiation makes it difficult to determine the temperature on irradiated surfaces. Contact thermometry is not appropriate and pyrometric measurements are distorted by the reflected solar radiation. The measurement in solar-blind spectral ranges offers a possible solution by eliminating the reflected solar radiation from the measurement signal. The paper shows that besides the incoming solar radiation and the absorber emittance, the bi-directional reflection properties and the temperature of the object are determining for the required selectivity of the spectral filter. Atmospheric absorption affects the solar blind pyrometric measurements in absorption bands of CO2 and water vapor. The deviation of temperature measurement due to atmospheric absorption is quantified and the possibilities and limitations of accounting for the atmospheric absorption with models based on radiation transfer calculations are discussed.
|Title:||Pyrometric Temperature Measurement on Solar Thermal High Temperature Receivers|
|Journal or Publication Title:||Journal of Solar Energy Engineering|
|In ISI Web of Science:||Yes|
|Page Range:||pp. 285-292|
|Keywords:||solar blind, pyrometric temperature measurement, solar thermal, high temperature, atmospheric absorption|
|HGF - Research field:||Energy|
|HGF - Program:||Renewable Energies|
|HGF - Program Themes:||E SF - Solar research|
|DLR - Research area:||Energy|
|DLR - Program:||E SF - Solar research|
|DLR - Research theme (Project):||E - Solare Hochtemperatursysteme (old)|
|Institutes and Institutions:||Institute of Technical Thermodynamics > Solar Research|
|Deposited By:||Markus Pfänder|
|Deposited On:||21 Aug 2006|
|Last Modified:||27 Apr 2009 13:01|
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