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Dynamic model for controlled uniform processing under microwave heating by using a heat exchanger
Author(s) -
Teng Yuping,
Peng Shu,
Hong Tao,
Tang Zhengming,
Huang Kama
Publication year - 2021
Publication title -
international journal of rf and microwave computer‐aided engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.335
H-Index - 39
eISSN - 1099-047X
pISSN - 1096-4290
DOI - 10.1002/mmce.22654
Subject(s) - mechanics , dielectric heating , microwave , materials science , heat exchanger , internal heating , tube (container) , joule heating , thermal conduction , temperature control , heating element , heating system , electric heating , microwave heating , dielectric , thermodynamics , mechanical engineering , composite material , optoelectronics , engineering , physics , telecommunications
The development of microwave heating technology promotes the improvement of industry quality and efficiency, but the drawbacks of microwave heating, such as uneven heating, prevent its wide application in industry. In this paper, a double‐layer ring tube is proposed for improving the heating uniformity and achieving the target temperature. The gap between the inner and outer tubes is evenly divided into four regions, and the cooling liquid flows through the gap to control the temperature of the heating target placed in the inner tube. Maxwell's equation, heat conduction equation, Navier‐Stokes equation and the mass conservation equation are coupled to simulate the heating process, and the experimental data and simulation data are compared to verify the correctness of the model. Meanwhile, the heating uniformity of structure with or without heating exchanger is compared, and the effect of different fluid velocities, different sizes of the reactor and different dielectric constant of heating target on the heating performance is discussed.