0

Full Content is available to subscribers

Subscribe/Learn More  >

Impact of Moisture on the Thermal Properties of Nanoparticle-Based Materials

[+] Author Affiliations
Muftah O. Elsahati

University of Benghazi, Benghazi, Lybia

Robert F. Richards

Washington State University, Pullman, WA

Paper No. HT2017-4876, pp. V002T13A001; 8 pages
doi:10.1115/HT2017-4876
From:
  • ASME 2017 Heat Transfer Summer Conference
  • Volume 2: Heat Transfer Equipment; Heat Transfer in Multiphase Systems; Heat Transfer Under Extreme Conditions; Nanoscale Transport Phenomena; Theory and Fundamental Research in Heat Transfer; Thermophysical Properties; Transport Phenomena in Materials Processing and Manufacturing
  • Bellevue, Washington, USA, July 9–12, 2017
  • Conference Sponsors: Heat Transfer Division
  • ISBN: 978-0-7918-5789-2
  • Copyright © 2017 by ASME

abstract

Nanoparticle packed beds are of interest because of their extremely low thermal conductivities. However, thermal nanoparticle packed beds exposed to ambient air show unusual increases in conductivity. The causes for that increase in conductivity are examined with experimental measurements. Sorption isotherms and thermal conductivity measurements for 20 nm and 200 nm silica nanoparticle packed beds exposed to a range of humidity are presented. Both nanoparticle beds demonstrate hygroscopic behavior, absorbing significant amounts of moisture upon exposure to humid air. The thermal conductivity of the nanoparticle beds are shown to increase monotonically with relative humidity. More than an order of magnitude increase in conductivity is seen, with a large increase at very low humidity. The measurements illuminate the effects of moisture on the thermal properties of nanoparticle-based materials.

Copyright © 2017 by ASME

Figures

Tables

Interactive Graphics

Video

Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In