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A thin-film thermocouple for transient heat transfer measurements in ceramic-coated combustion chambers

โœ Scribed by Dennis N. Assanis; Francis A. Friedmann


Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
768 KB
Volume
20
Category
Article
ISSN
0735-1933

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โœฆ Synopsis


A chromel-alumel overlapping thin-film thermocouple (TFTC) has been developed for transient heat transfer measurements in ceramic-coated combustion chambers. The TFTC was first evaluated using various metallurgical techniques, and calibrated against a standard thermocouple. Subsequently, the TFTC was tested in a diesel engine combustion chamber operating at 1900 rpm and full load. A mean temperature of 613 K with a cyclic swing of 55 K was measured for a ceramic-coated chamber surface. Calculations showed a dramatic reduction in transient heat flux into the surface with the application of the ceramic coating.


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