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Thermal Analysis of Phase Change Materials With Embedded Graphite Nanofibers for Thermal Management of Electronics

[+] Author Affiliations
Thomas C. Kopec, Randy D. Weinstein, Amy S. Fleischer, Elizabeth D'Addio, Carol A. Bessel

Villanova University

Paper No. IMECE2006-13685, pp. 77-82; 6 pages
doi:10.1115/IMECE2006-13685
From:
  • ASME 2006 International Mechanical Engineering Congress and Exposition
  • Heat Transfer, Volume 3
  • Chicago, Illinois, USA, November 5 – 10, 2006
  • Conference Sponsors: Heat Transfer Division
  • ISBN: 0-7918-4786-1 | eISBN: 0-7918-3790-4
  • Copyright © 2006 by ASME

abstract

Phase change materials (PCMs) exhibit excellent thermal storage capacity due to their high latent heat of transformation and have been successfully utilized in small volumes for transient thermal management of electronics. However, their low thermal diffusivity makes it difficult to utilize large volumes of PCMs for transient thermal management of high power density systems. To improve the thermal performance of a paraffin PCM, high thermal conductivity graphite nanofibers are embedded into the paraffin PCM. The thermal effects of graphite fiber loading levels, measured in weight percent, are examined for a 131 cm3 volume cubic system with power loads of 3 and 7 W. It is found that the thermal response of the system improves with increased fiber loading levels.

Copyright © 2006 by ASME

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