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Home Archives Thermal Letter Officers Future meetings Assembly for International Heat Transfer Conferences

ISBN Print: 0-89116-909-1

ISSN: 2377-424X

International Heat Transfer Conference 9
August, 19-24, 1990 , Jerusalem, Israel

A NEW THERMAL METHOD FOR GAS ANALYSIS BASED ON THE SEEBECK EFFECT

Get access DOI: 10.1615/IHTC9.2760
pages 141-145

Abstract

Detection of the thermal conductivity for a gas or a liquid by means of the Seebeck effect is shown both by a theoretical approach and by experiments. The method is based upon heat transfer between the hot junction of a thermocouple heated by an electric current and the surrounding fluid. From the measured Seebeck emf related to the junction temperature, an unknown gas can be identified. A good sensitivity to gas mixtures such as He-N2 is pointed out and some other features for possible sensing devices based upon the present new method are proposed.
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