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ISSN Online: 2377-424X

ISBN Print: 0-85295-345-3

International Heat Transfer Conference 10
August, 14-18, 1994, Brighton, UK

A CORRELATION FOR THE THERMAL CONTACT CONDUCTANCE OF INTERSTITIAL METALLIC FOILS

Get access (open in a dialog) DOI: 10.1615/IHTC10.730
pages 337-342

Sinopsis

In many industrial applications; the thermal contact conductance must be increased to improve the overall thermal efficiency of a system. One technique which increases the thermal conductance is the use of metallic foils between the surfaces in contact. The addition of the foil, however, increases the complexity of the thermal analysis due to the foil thickness, hardness, conductivity, and surface finish. As a consequence, most studies of the thermal conductance of metallic foils have been experimental. This study uses experimental data for four metallic foils (aluminum, tin, lead, and copper) inserted between aluminum 6061-T6 surfaces in contact in a vacuum environment. The 221 thermal contact conductance data points for the metallic foils can be linked to the thermal contact conductance of the bare joints as a function of the hardness, the thermal conductivity of the foil and bare joint materials, and the finish of the bare joint surfaces. The physical behavior of the foil-solid system has been successfully correlated.