Acoustic Temperature Profile Measurement Technique for Large Combustion Chambers

[+] Author and Article Information
S. P. Venkateshan, P. Shakkottai, E. Y. Kwack, L. H. Back

Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109

J. Heat Transfer 111(2), 461-466 (May 01, 1989) (6 pages) doi:10.1115/1.3250699 History: Received May 01, 1988; Online October 20, 2009


Measurement of times of flight of sound waves can be used to determine temperatures in a gas. This paper describes a system, based on this principle, that is capable of giving the temperature profile in a nonisothermal gas volume, for example, prevalent in a large furnace. The apparatus is simple, rugged, accurate, and capable of being automated for process control applications. It is basically an acoustic waveguide where the outside temperature profile is transferred to a chosen gas contained inside the guide.

Copyright © 1989 by ASME
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