This paper addresses the methodology to estimate the effective thermal conductivity of the wiring board, where the metal wiring network is very complicated and then the thermal conductivity of the metal wiring is more than 1000 times higher than that of the resign board. Based on the concept of analogy between the electric and the thermal resistance network, two types of estimation equations are derived by dividing the composite system parallel or perpendicular to the heated/cooled surface. When the ratio of higher to lower thermal conductivities is less than 10, the estimated values by these equations agree with each other. However, the difference is clearly found between them when the ratio is larger than 100. The estimated values are moreover compared with the exact solutions, which are obtained by numerical simulation of heat transfer using Microsoft Excel, and then the applicability of the present estimation methodology is discussed. It is found that the thermal resistance network obtained by dividing the composite system perpendicular to the heated/cooled surface is effective to estimate the effective thermal conductivity of the composite system.
Skip Nav Destination
2010 14th International Heat Transfer Conference
August 8–13, 2010
Washington, DC, USA
Conference Sponsors:
- Heat Transfer Division
ISBN:
978-0-7918-4938-5
PROCEEDINGS PAPER
Theoretical Investigation on Effective Thermal Conductivity of a Disk-Shaped Composite System Available to Purchase
Yasushi Koito,
Yasushi Koito
Kumamoto University, Kumamoto, Japan
Search for other works by this author on:
Toshio Tomimura,
Toshio Tomimura
Kumamoto University, Kumamoto, Japan
Search for other works by this author on:
Shuichi Torii
Shuichi Torii
Kumamoto University, Kumamoto, Japan
Search for other works by this author on:
Yasushi Koito
Kumamoto University, Kumamoto, Japan
Toshio Tomimura
Kumamoto University, Kumamoto, Japan
Shuichi Torii
Kumamoto University, Kumamoto, Japan
Paper No:
IHTC14-22870, pp. 585-592; 8 pages
Published Online:
March 1, 2011
Citation
Koito, Y, Tomimura, T, & Torii, S. "Theoretical Investigation on Effective Thermal Conductivity of a Disk-Shaped Composite System." Proceedings of the 2010 14th International Heat Transfer Conference. 2010 14th International Heat Transfer Conference, Volume 3. Washington, DC, USA. August 8–13, 2010. pp. 585-592. ASME. https://doi.org/10.1115/IHTC14-22870
Download citation file:
12
Views
Related Proceedings Papers
Related Articles
Investigations of the Thermal Spreading Effects of Rectangular Conduction Plates and Vapor Chamber
J. Electron. Packag (September,2007)
Thermal Performance Optimization of Radio Frequency Packages for Wireless Communication
J. Electron. Packag (December,2004)
Related Chapters
What Property Do We Measure
Heat Transmission Measurements in Thermal Insulations
Thermal Design of a Miniature Guarded Hot Plate Apparatus
Insulation Materials: Testing and Applications, 3rd Volume
Conductors in Electrostatic Equilibrium
Introduction to Classical Electrodynamics 1