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Research Papers

Development of an Experimental Procedure for Thermal Contact Resistance Estimation at the Glass/Metal Contact Interface

[+] Author and Article Information
B. Abdulhay

School of Engineering,
Energy, and Thermo-Fluids Research Group,
Lebanese International University,
P. O. Box 146404, Mazraa,
Beirut, Lebanon;
LTN, UMR CNRS 6607,
BP 50609, La Chantrerie,
44306 Nantes Cedex 3, France
e-mail: bakri.abdulhay@liu.edu.lb

B. Bourouga

LTN, UMR CNRS 6607,
BP 50609, La Chantrerie,
44306 Nantes Cedex 3, France

F. Alzetto

Saint Gobain,
R&D – 39 quai Lucien Lefranc,
Aubervilliers Cedex 93303, France

C. Challita

School of Engineering,
Energy and Thermo-Fluids Research Group,
Lebanese International University,
P. O. Box 146404, Mazraa,
Beirut, Lebanon

1Corresponding author.

Manuscript received February 14, 2013; final manuscript received August 19, 2013; published online December 10, 2013. Assoc. Editor: Ting Wang.

J. Thermal Sci. Eng. Appl 6(2), 021006 (Dec 10, 2013) (9 pages) Paper No: TSEA-13-1034; doi: 10.1115/1.4025568 History: Received February 14, 2013; Revised August 19, 2013

In this paper, an experimental device is designed and developed in order to estimate thermal conditions at the glass/metal contact interface. This device is made of two parts: The upper part contains the tool (piston) made of bronze and a heating device to raise the temperature of the piston to 700 °C. The lower part is composed of a lead crucible and a glass sample. The assembly is provided with a heating system, an induction furnace of 6 kW for heating the glass up to 950 °C. The developed experimental procedure has permitted the estimation of the thermal contact resistance (TCR) using a developed measurement principle based on the inverse technique developed by Beck et al. (1985, Inverse Heat Conduction: III Posed Problems, Wiley Inter-science, New York). The semitransparent character of the glass has been taken into account by an additional radiative heat flux and an equivalent thermal conductivity. After the set-up tests, reproducibility experiments for a specific contact pressure have been carried out. Results show a good repeatability of the registered and estimated parameters such as the piston surface temperature, heat flux density, and TCR. The estimated value of TCR reaches 2 × 10−3 K m2/W with a maximum dispersion that does not exceed 6%.

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Figures

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Fig. 1

The measurement principle

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Fig. 4

Radiative flux density in the glass at different time values

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Fig. 11

Schematic view of thermocouples location

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Fig. 9

The lower part of the experimental device

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Fig. 10

The Integrality of the experimental device

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Fig. 5

Schematic view of the experimental device

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Fig. 6

2D Axisymmetric model developed on Comsol®

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Fig. 7

Schematic draw of the upper part of the experimental device

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Fig. 8

The upper part of the experimental device

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Fig. 12

Temperatures registered by thermocouple “tc4” and standard deviation

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Fig. 13

Estimated heat flux density

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Fig. 14

Estimated TCR at the glass/bronze metal contact interface

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Fig. 15

Uncertainty analysis of the estimated heat flux density

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