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Flash Boiling and Desorption From a Macroporous Carbon-Boron-Nitrogen Foam

[+] Author Affiliations
Jeffrey D. Engerer, Galen R. Jackson, Rajib Paul, Timothy S. Fisher

Purdue University, West Lafayette, IN

Paper No. IMECE2013-64884, pp. V06BT07A071; 9 pages
doi:10.1115/IMECE2013-64884
From:
  • ASME 2013 International Mechanical Engineering Congress and Exposition
  • Volume 6B: Energy
  • San Diego, California, USA, November 15–21, 2013
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-5629-1
  • Copyright © 2013 by ASME

abstract

This paper presents a tunable cooling technology befitting fast transient thermal events. In this approach, the rapid depressurization of the working fluid triggers coincident flash-boiling and desorption events, thereby achieving very high cooling rates for short periods of time. Carbon-boron-nitrogen foam, derived through the chemical modification of a highly graphitized carbon precursor, is utilized because of its excellent thermal conductivity, adsorptive properties and open macroporous structure. Preliminary results indicate a bulk fluid temperature change of 45 °C in less than one second, with a corresponding 26 °C temperature drop of the baseplate during a controlled ten-second flash boiling process with no external heating.

Copyright © 2013 by ASME

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