Heat and mass transfer coefficients in drying of starch based food systems

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Abstract

Experiments were conducted to measure the temperature and moisture content of starch and starch-fructose samples during drying. A two-dimensional finite element model was developed. An exhaustive parameter estimation technique was applied in conjunction with the model and drying data to estimate the moisture filtration coefficient k(p) and the surface heat and mass transfer coefficients, h(q) and h(m). Minimization of the deviation between experimental and simulation data resulted in a k(p) value of 0.51*10-7 kg.m/N.h and 0.52*10-7kg.m/N.h for the starch and starch-fructose samples. Corresponding values of h were 15.8 W/m2K and 21.2 W/m2K and that of h(m) were 1.12*10-6 m/s and 0.94*10-6 m/s respectively.

Original languageEnglish (US)
Pages (from-to)323-327
Number of pages5
JournalJournal of food science
Volume64
Issue number2
DOIs
StatePublished - Jan 1 1999
Externally publishedYes

Keywords

  • Finite element
  • Heat transfer
  • Mass transfer
  • Modeling
  • Starch

ASJC Scopus subject areas

  • Food Science

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