"3D layered thermography" method to map the temperature distribution of a free flowing bulk in case of microwave drying

Akos Kelen, Sandor Ress, Tibor Nagy, Erzsebet Pallai-Varsanyi, Klara Pintye-Hodi

Research output: Article

15 Citations (Scopus)

Abstract

Microwave drying is getting more and more popular even in the highly regulated pharmaceutical field. In spite of its uniqueness there is a rightful resistance because of the non-homogeneous electric field that cause non-homogeneous temperature distribution. The dielectric and thermal properties of any complex workload are rarely known, and moreover, they change during a drying process, which makes experimental tests essential to complete any mathematical modelling. To get a 3D overview of a free-flowing bulk the workload was divided with Teflon layers to form cross-sectional surfaces. After dissipation of microwave energy, IR thermocartograms were taken and temperature distribution was evaluated even quantitatively. The "3D layered thermography" method offers reliable and workload-specific information via simple executable technique for the optimization of a microwave processes.

Original languageEnglish
Pages (from-to)1015-1021
Number of pages7
JournalInternational Journal of Heat and Mass Transfer
Volume49
Issue number5-6
DOIs
Publication statusPublished - márc. 1 2006

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

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