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Heat generation associated with pressure-induced infiltration in a nanoporous silica gel

Published online by Cambridge University Press:  31 January 2011

Aijie Han ,
Venkata K. Punyamurtula  and
Yu Qiao
Aijie Han
Affiliation:
Department of Structural Engineering, University of California–San Diego, La Jolla, California 92093-0085
Venkata K. Punyamurtula
Affiliation:
Department of Structural Engineering, University of California–San Diego, La Jolla, California 92093-0085
Yu Qiao*
Affiliation:
Department of Structural Engineering, University of California–San Diego, La Jolla, California 92093-0085
*
a)Address all correspondence to this author. e-mail: yqiao@ucsd.edu
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Abstract

As a liquid moves in the nanopores of a silica gel, because of the hysteresis of sorption behavior, significant energy dissipation can take place. Through a calometric measurement, the characteristics of associated heat generation are investigated. The temperature variation increases with the mass of silica gel, which consists of a reversible part and an irreversible part. The residual temperature change is about 30% to 60% of the maximum temperature increase and can be accumulated as multiple loading cycles are applied.

Keywords

AbsorptionFluidicsNanostructure
Type
Articles
Information
Journal of Materials Research , Volume 23 , Issue 7 , July 2008 , pp. 1902 - 1906
Copyright
Copyright © Materials Research Society 2008

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