Moisture Transport in Silica Gel Packed Beds - II. Experimental Study

Ahmad A. Pesaran, Anthony F. Mills

Research output: Contribution to journalArticlepeer-review

121 Scopus Citations


Experiments have been performed to obtain the transient response of a thin adiabatic packed bed of silica gel after a step change in inlet air conditions. Comparisons are made with predictions using a solid-side resistance model and a pseudo-gas-side controlled model and better agreement obtained with the former model. An apparent dynamic hysteresis for adsorption/desorption with microporous silica gel is clearly in evidence, which could be due to a solid-side effective diffusion coefficient which decreases with increasing moisture content, or to a lesser extent to a hysteresis in the adsorption isotherm itself.

Original languageAmerican English
Pages (from-to)1051-1060
Number of pages10
JournalInternational Journal of Heat and Mass Transfer
Issue number6
StatePublished - 1987
Externally publishedYes

Bibliographical note

Work performed by Solar Energy Research Institute, Golden, Colorado, and School of Engineering and Applied Science, University of California, Los Angeles, California

NREL Publication Number

  • ACNR/JA-252-9519


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