Drying of a porous spherical rock for compressed air energy storage

Abraham Dayan, Joseph Flesh, Craig Saltiel*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

14 Scopus citations


A model for compressed hot air storage in a sedimentary porous rock composed of spherical rock is presented. During charging, the rock loses moisture and a dry spherical shell develops around a moist zone. The transient heat conduction, convection and mass transfer that take place during charging and discharging are simulated using a moving-grid numerical methodology for both the wet and dry zones. A process of evaporation/condensation moves the boundary between the two zones. The model is verified using data from a concrete drying experiment. A parametric study is conducted to demonstrate the sensitivity of the system to various parameters.

Original languageEnglish
Pages (from-to)4459-4468
Number of pages10
JournalInternational Journal of Heat and Mass Transfer
Issue number19-20
StatePublished - Sep 2004


  • Compressed air energy storage
  • Drying
  • Heat and mass transfer
  • Porous media


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