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Recovery of true heated body temperature via integral-spectral characteristics of thermal radiation

Authors
  • Rusin, S. P.1
  • 1 Russian Academy of Sciences, Institute for High Energy Densities of Association for High Temperatures, Moscow, Russia , Moscow (Russia)
Type
Published Article
Journal
Thermophysics and Aeromechanics
Publisher
Nauka/Interperiodica
Publication Date
Jan 01, 2006
Volume
13
Issue
1
Pages
115–124
Identifiers
DOI: 10.1134/S1531869906010138
Source
Springer Nature
Keywords
License
Yellow

Abstract

The method of determining the true temperature of an opaque body via a heated thermal radiation spectrum recorded in spectral bands of particular width is considered. The accuracy of true temperature estimation versus a number of unknown parameters of a body emissivity model and quantity and the width of spectral bands as well are investigated by means of the “quasi-real” experiments. The solution for the polynomial emissivity model (example for platinum) is unstable even in the case of input data given with computer accuracy if the number of unknown parameters exceeds ten. It is shown that an essential increase in the accuracy of the body true temperature recovery can be achieved by processing the repeated experiments.

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