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Development of Interferometric Temperature Measurement Procedures for Microfluid Flow

[+] Author Affiliations
D. Newport, J. Garvey, T. Dalton, V. Egan

University of Limerick, Limerick, Ireland

M. Whelan

Institute for Health and Consumer Protection, Ispra, VA, Italy

Paper No. ICMM2003-1106, pp. 809-815; 7 pages
doi:10.1115/ICMM2003-1106
From:
  • ASME 2003 1st International Conference on Microchannels and Minichannels
  • 1st International Conference on Microchannels and Minichannels
  • Rochester, New York, USA, April 24–25, 2003
  • Conference Sponsors: Nanotechnology Institute
  • ISBN: 0-7918-3667-3
  • Copyright © 2003 by ASME

abstract

In order to understand heat transfer processes at the microscale, detailed temperature measurements are required. This paper begins with a review of the current state-of-the art in fluid temperature measurement at the microscale. At present, fluid temperature profiles are not measured, with verification of predicted heat transfer performance being based on global measurements. The paper describes a potential full-field technique based on micro-interferometry. The accuracy of extracting temperature data from small phase difference intensity maps is discussed, with particular reference to the high levels of signal to noise as would be found in a micro-scale flow. Benchmark optical experiments quantifying the effect of noise on phase evaluation are described and the paper concludes with an outline of the achievable resolution for a given channel length and fluid.

Copyright © 2003 by ASME

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