Microwave drying at various conditions modeled using the reaction engineering approach

Aditya Putranto, Xiao Dong Chen*

*Corresponding author for this work

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

One of the most significant process intensification schemes in drying is microwave drying. Modeling the process of microwave drying is very useful. The lumped reaction engineering approach (REA) is now coupled with appropriate equations for modeling microwave heating. Here, a slight modification of the equilibrium activation energy is needed since the product temperature is higher than the ambient temperature. Unlike the diffusion-based approach, the REA drying parameters were generated from minimum number of drying runs. It has been found that the modifications lead to excellent agreements between the predicted and experimental data. The results of modeling match well with the experimental data. The overall model is accurate to describe the moisture content and temperature profiles. Comparisons with the diffusion-based approach indicate that the REA can achieve comparable or even better agreement toward the experimental data. This exercise has demonstrated that a simple combination of the lumped reaction engineering approach and the microwave energy absorption is versatile in predicting the microwave drying process accurately; thus, this worked example will be illustrative for future needed studies.

Original languageEnglish
Pages (from-to)1654-1663
Number of pages10
JournalDrying Technology
Volume34
Issue number14
Early online date22 Mar 2016
DOIs
Publication statusPublished - 25 Oct 2016
Externally publishedYes

Keywords

  • Food drying
  • heat and mass transfer
  • mathematical modeling
  • microwave drying
  • reaction engineering approach
  • relative activation energy

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Physical and Theoretical Chemistry

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