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A Hybrid Method for Measuring Heat Flux

J. Heat Transfer  -- March 2010 --  Volume 132,  Issue 3, 031602 (8 pages)
doi:10.1115/1.4000051

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Author(s):
David O. Hubble
Department of Mechanical Engineering, AEThER Laboratory, Virginia Polytechnic Institute and State University, 114R Randolph Hall, Blacksburg, VA 24061

Tom E. Diller, Professor, Fellow ASME
Department of Mechanical Engineering, Virginia Polytechnic Institute and State University, 114R Randolph Hall, Blacksburg, VA 24061
The development and evaluation of a novel hybrid method for obtaining heat flux measurements is presented. By combining the spatial and temporal temperature measurements of a heat flux sensor, the time response, accuracy, and versatility of the sensor is improved. Sensors utilizing the hybrid method are able to make heat flux measurements on both high and low conductivity materials. It is shown that changing the thermal conductivity of the backing material four orders of magnitude causes only an 11% change in sensor response. The hybrid method also increases the time response of heat flux sensors. The temporal response is shown to increase by up to a factor of 28 compared with a standard spatial sensor. The hybrid method is tested both numerically and experimentally on both high and low conductivity materials and demonstrates significant improvement compared with operating the sensor as a spatial or temporal sensor alone.

©2010 American Society of Mechanical Engineers

History: Received 15 February 2009; revised 20 July 2009; published 28 December 2009
doi: http://dx.doi.org/10.1115/1.4000051

KEYWORDS and PACS

Keywords
PACS
  • 47.80.-v
    Instrumentation and measurement methods in fluid dynamics
  • 07.07.Df
    Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing
  • 66.25.+g
    Thermal conduction in nonmetallic liquids
  • 47.27.T-
    Turbulent transport processes
  • YEAR: 2010

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PUBLICATION DATA

Coden:
JHTRAO
ISSN:
0022-1481 (print)   1528-8943 (online)
Publisher:
AIP is a member of CrossRef ASME

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