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RESEARCH PAPERS

A Dual-Element Transducer for Measuring High Gas-Stream Temperatures

[+] Author and Article Information
W. H. Giedt

University of California, Berkeley, Calif.; Advanced Technology Laboratories

J. T. Chambers

Advanced Technology Laboratories, Mountain View, Calif.

J. Heat Transfer 87(3), 397-402 (Aug 01, 1965) (6 pages) doi:10.1115/1.3689122 History: Received September 18, 1964

Abstract

An experimental evaluation of a dual-element transducer for measuring gas stream temperatures is described. Temperatures are inferred from simultaneous temperature-time measurements of two elements of identical geometry but unequal thermal capacity. The major effort was devoted to measurements in medium-temperature streams to prove the feasibility of the method. The accuracy of the results was within ±6 percent for measurements from 1950 to 2250 deg F, which was the best experimental accuracy predicted by an earlier analysis of the concept. A limited number of measurements were made in an oxyacetylene flame. The indicated flame temperatures were 4700 and 4789 deg F which agree within 5 percent with measurements made by sodium-line-reversal techniques for equivalent combustion conditions. A gas-stream temperature profile measurement is also presented.

Copyright © 1965 by ASME
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