Modeling of microwave heating in a cylindrical cavity system: Effect of rotation and sample location on temperature uniformity


Altin O., ERDOĞDU F., Skipnes D., Skåra T.

10th International Conference on Simulation and Modelling in the Food and Bio-Industry, FOODSIM 2018, Ghent, Belçika, 8 - 12 Nisan 2018, ss.277-282 identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Basıldığı Şehir: Ghent
  • Basıldığı Ülke: Belçika
  • Sayfa Sayıları: ss.277-282
  • Anahtar Kelimeler: Cavity geometry, Microwave heating, Rotational effects, Temperature uniformity
  • Ankara Üniversitesi Adresli: Evet

Özet

© 2018 EUROSIS-ETI.In conventional thermal processing, heat transfer is generally carried out by conduction and convection, and significant temperature non-uniformity within the sample is observed. Longer processing times are also required with extensive use of energy. Microwave (MW) heating is an innovative thermal process and accepted to provide volumetric heating compared to the conventional processes by reducing the required process time and energy. However, non-uniform electromagnetic field within the MW cavity leads to a non-uniform temperature distribution within the product. In this study, sample temperature distribution during MW heating was examined as a function of sample location within the MW cavity and rotation rates applied to the sample during the process. In addition, compared to the generaly approaches in the literature, a cylindrical cavity was considered. The developed mathematical model was experimentally validated with a comparatively uniform electric field distribution within the cylindrical microwave cavity, and experimental results demonstrated that the location of the sample and the rotational effects significantly influenced the sample temperature distribution. The results of this study is expected to be further used for industrial system design and optimization purposes.