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RESEARCH PAPERS: Analytical and Experimental Techniques

The Effect of Imprecisions in Thermal Sensor Location and Boundary Conditions on Optimal Sensor Location and Experimental Accuracy

[+] Author and Article Information
A. F. Emery, T. D. Fadale

Department of Mechanical Engineering, University of Washington, Seattle, WA 98195-2600

J. Heat Transfer 119(4), 661-665 (Nov 01, 1997) (5 pages) doi:10.1115/1.2824169 History: Received September 03, 1996; Revised May 12, 1997; Online December 05, 2007

Abstract

Optimal sensor locations and the information content obtained when estimating thermal parameters using the inverse method are significantly affected by uncertainties in sensor position and in the system parameters. This paper describes the effects of these uncertainties. It is shown that the effect of sensor location uncertainties can be reduced by placing temperature sensors in locations of minimum heat flux. In transient experiments, the uncertainties in the boundary conditions have the greatest effect at points of high heat flux and cause the optimal sensor locations to move from the boundary with the highest convective heat transfer coefficient to the boundary with the lowest in an abrupt manner.

Copyright © 1997 by The American Society of Mechanical Engineers
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