Impact of thermal shielding on heating efficiency of SiC in single mode microwave resonant cavity

0579162 - FZÚ 2024 RIV US eng C - Conference Paper (international conference)
Cichoň, Stanislav - Machač, J.
Impact of thermal shielding on heating efficiency of SiC in single mode microwave resonant cavity.
22TH INTERNATIONAL CONFERENCE COMPUTATIONAL PROBLEMS OF ELECTRICAL ENGINEERING (CPEE 2021). New York: IEEE, 2021, s. 1-4. ISBN 978-1-7281-8430-2.
[International Conference on Computational Problems of Electrical Engineering (CPEE) /22./. Hrádek u Sušice (CZ), 15.09.2021-17.09.2021]
Institutional support: RVO:68378271
Keywords : microwave heating * single mode resonator * heating efficiency * silicon carbide
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
https://ieeexplore.ieee.org/xpl/conhome/9585223/proceeding

Microwave heating of a susceptor in the form of SiC disc was simulated in a single mode resonant cavity. The microwave applicator consisted of a waveguide of rectangular cross section WR340 excited by dominant TE10 mode at the industrial frequency 2.45 GHz. Heating efficiency was investigated in two principal configurations represented by 1) an exposed susceptor and 2) a susceptor surrounded with thermal shielding in the form of three coaxial tubes of microwave transparent ceramics. It was found that a relatively high value of the real part of dielectric permittivity of the insulation ceramics leads to a non-negligible modification of the field pattern inside the cavity. This could significantly improve heating efficiency. Consequently, for the design of an efficient microwave applicator, actual sample as well as insulation geometry and dielectric properties should be highly regarded. The analysis has been supported by experiment.
Permanent Link: https://hdl.handle.net/11104/0348024