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Proceedings Paper

Simplified analysis of the relation between the type of enclosure and temperature coefficient of the output signal of thermal converters
Author(s): Marian Kampik
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Paper Abstract

The output signal of the thermal converter should be insensitive to ambient temperature changes. In practice, however, a thermal converter always features a nonzero temperature coefficient of the output signal. This coefficient is determined mainly by the dependence of the heat transfer process on the ambient temperature. The main goal of this paper is to analyze the effect of different enclosures on particular and total temperature coefficients. Three types of enclosure are considered: high-volume enclosure filled with a ga sat pressure close to the atmospheric, low-volume enclosure filled with a gas at pressure close to the atmospheric and low-volume partially evacuated enclosure at internal pressure of some 1 X 10-4 Pa. The analytical expression for both the thermal conductances and their corresponding temperature coefficients are presented. Example numerical results for a prototype of the converter are also included.

Paper Details

Date Published: 8 August 2001
PDF: 11 pages
Proc. SPIE 4516, Optoelectronic and Electronic Sensors IV, (8 August 2001); doi: 10.1117/12.435938
Show Author Affiliations
Marian Kampik, Silesian Univ. of Technology (Poland)

Published in SPIE Proceedings Vol. 4516:
Optoelectronic and Electronic Sensors IV

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