Conjugate heat and mass transfer process within porous media with dielectric cores in microwave freeze drying

Hongwei Wu, Zhi Tao, Guohua Chen, Hongwu Deng, Guoqiang Xu, Shuiting Ding

Research output: Journal article publicationJournal articleAcademic researchpeer-review

33 Citations (Scopus)


A conjugate heat and mass transfer model was developed for microwave freeze drying within porous media with dielectric cores. The set of transient governing equations developed was solved numerically using finite volume method with variable time-steps. Analysis of numerical results may lead to following main conclusions: (1) by carefully choosing the loss factor and size of the dielectric cores could dramatically reduce the drying time, (2) the size and the loss factor ε″ of the dielectric core are the two important parameters influencing the drying process, (3) there may be two sublimation fronts in existence within the porous media.
Original languageEnglish
Pages (from-to)2921-2928
Number of pages8
JournalChemical Engineering Science
Issue number14
Publication statusPublished - 1 Jul 2004
Externally publishedYes


  • Dehydration
  • Loss factor
  • Modelling
  • Sublimation front

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

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