Experimantal indication of microwave distribution in 3D

A. Kelen, S. Ress, T. Nagy, E. Pallai, K. Pintye-Hódi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Microwave vacuum drying is getting more and more popular thanks to its known advantageous features. In practice the best uniformity of power density and the shortest drying time are sought simultaneously, thus the drying method is close to its secure limit. Control and monitoring of a running process remains unsolved but even experimental mapping is rather circuitous. The dielectric and thermal properties of a complex pharmaceutical composition are rarely known, and moreover, they change during a drying process, which makes accurate mathematical modelling rather uncertain. For that very reason preliminary tests can never be neglected. The aim of our study is to experimentally map and evaluate the heat distribution quantitatively. To get a 3D overview of a freeflowing bulk, the workload was divided with Teflon layers to form cross-sectional surfaces. After dissipation of microwave energy, IR thermocartograms were taken and the temperature distribution was evaluated quantitatively. The " 3D layered thermography" method offers reliable and workloadspecific information, via a simple executable technique, for optimization of a microwave assisted drying process.

Original languageEnglish
Title of host publicationProceedings of the 10th International Conference on Microwave and High Frequency Heating
PublisherMicrowave Application Group
Pages63-66
Number of pages4
ISBN (Electronic)8890180420, 9788890180422
Publication statusPublished - 2005
Event10th International Conference on Microwave and High Frequency Heating 2005 - Modena, Italy
Duration: Sep 12 2005Sep 15 2005

Other

Other10th International Conference on Microwave and High Frequency Heating 2005
CountryItaly
CityModena
Period9/12/059/15/05

Fingerprint

drying
indication
microwaves
teflon (trademark)
dielectric properties
radiant flux density
temperature distribution
dissipation
thermodynamic properties
heat
vacuum
optimization
energy

Keywords

  • Drying
  • Homogeneity
  • Microwave
  • Pharmaceutical
  • Thermography

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Kelen, A., Ress, S., Nagy, T., Pallai, E., & Pintye-Hódi, K. (2005). Experimantal indication of microwave distribution in 3D. In Proceedings of the 10th International Conference on Microwave and High Frequency Heating (pp. 63-66). Microwave Application Group.

Experimantal indication of microwave distribution in 3D. / Kelen, A.; Ress, S.; Nagy, T.; Pallai, E.; Pintye-Hódi, K.

Proceedings of the 10th International Conference on Microwave and High Frequency Heating. Microwave Application Group, 2005. p. 63-66.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Kelen, A, Ress, S, Nagy, T, Pallai, E & Pintye-Hódi, K 2005, Experimantal indication of microwave distribution in 3D. in Proceedings of the 10th International Conference on Microwave and High Frequency Heating. Microwave Application Group, pp. 63-66, 10th International Conference on Microwave and High Frequency Heating 2005, Modena, Italy, 9/12/05.
Kelen A, Ress S, Nagy T, Pallai E, Pintye-Hódi K. Experimantal indication of microwave distribution in 3D. In Proceedings of the 10th International Conference on Microwave and High Frequency Heating. Microwave Application Group. 2005. p. 63-66
Kelen, A. ; Ress, S. ; Nagy, T. ; Pallai, E. ; Pintye-Hódi, K. / Experimantal indication of microwave distribution in 3D. Proceedings of the 10th International Conference on Microwave and High Frequency Heating. Microwave Application Group, 2005. pp. 63-66
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