Theoretical Equilibrium Moisture Content of Wood Under Vacuum


  • Zhangjing Chen
  • Fred M. Lamb


Equilibrium moisture content, vacuum drying


Under vacuum drying, there is an equilibrium moisture content corresponding to the vacuum drying conditions, that is, temperature and pressure. Theoretical methods to calculate equilibrium moisture content were developed based on the Hailwood-Horobin sorption theory. The equilibrium moisture contents at pressures from 5 to 760 mm Hg and temperatures from 0 to 100°C were calculated and tabulated in this paper. These equilibrium moisture contents can serve as an aid in the vacuum drying control.


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