Methodological and experimental aspects of the estimation of transient heat transfer coefficients in quenching experiments, using inverse heat transfer methods, were addressed and investigated. Beck’s method was used for the estimation of the transient heat transfer coefficient history from interior transient temperature measurements during quenching. Experiments involved plunging a high-purity copper sphere into cooling baths without boiling. The sphere was instrumented with several interior thermocouples for measuring the transient temperature response during quenching. Water and ethylene glycol were investigated. The early transient values of the heat transfer coefficient history were found to be about 100–120 percent higher than the values predicted using well-known empirical correlations for free convection. The later time values were in good agreement with those predicted with empirical correlations. The transient inverse technique has the capability of estimating early transients and subsequent quasi-steady-state values of heat transfer coefficient in a single transient experiment.
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November 1990
Research Papers
Investigation of Transient Heat Transfer Coefficients in Quenching Experiments
A. M. Osman,
A. M. Osman
Heat Transfer Group, Department of Mechanical Engineering, Michigan State University, East Lansing, MI 48824
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J. V. Beck
J. V. Beck
Heat Transfer Group, Department of Mechanical Engineering, Michigan State University, East Lansing, MI 48824
Search for other works by this author on:
A. M. Osman
Heat Transfer Group, Department of Mechanical Engineering, Michigan State University, East Lansing, MI 48824
J. V. Beck
Heat Transfer Group, Department of Mechanical Engineering, Michigan State University, East Lansing, MI 48824
J. Heat Transfer. Nov 1990, 112(4): 843-848 (6 pages)
Published Online: November 1, 1990
Article history
Received:
December 7, 1988
Revised:
February 22, 1990
Online:
May 23, 2008
Citation
Osman, A. M., and Beck, J. V. (November 1, 1990). "Investigation of Transient Heat Transfer Coefficients in Quenching Experiments." ASME. J. Heat Transfer. November 1990; 112(4): 843–848. https://doi.org/10.1115/1.2910490
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