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.
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Acknowledgments
This work was supported by the Army Research Office under Grant No. W911NF-05-1-0288. The authors are also grateful to Professor Vistasp M. Karbhair and Dr. Guijun Xian for the help with the measurement of specific heat.
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Han, A., Punyamurtula, V.K. & Qiao, Y. Heat generation associated with pressure-induced infiltration in a nanoporous silica gel. Journal of Materials Research 23, 1902–1906 (2008). https://doi.org/10.1557/JMR.2008.0236
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DOI: https://doi.org/10.1557/JMR.2008.0236