Susceptor based design strategies for enhancing microwave hybrid heating capability via experimental analysis, 3D multi-physics simulation and parametric optimization

IF 4.9 2区工程技术 Q1 ENGINEERING, MECHANICAL

International Journal of Thermal Sciences Pub Date : 2023-10-04 DOI:10.1016/j.ijthermalsci.2023.108674

A. Mohanty, D.K. Patel, S.K. Panigrahi

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引用次数: 0

Abstract

Microwave processing has gained remarkable recognition based upon volumetric processing that is energy efficient. Susceptor-assisted microwave heating is a fast-emerging technology because of its advantages over traditional microwave processing. Susceptor help to speed up microwave processing by offering two-way heating with less heat loss from the material's surface. The present investigation brings out ways (theoretical, simulation and experimental) to select appropriate susceptor material by considering different types of microwaves absorbing material (alumina, yttria stabilized zirconia, boron nitride and silicon carbide) for efficient microwave heating. Theoretical analysis (dielectric properties, penetration depth, absorption loss and reflection loss) suggests silicon carbide (SiC) to be the most suitable susceptor. COMSOL Multiphysics based simulation in conjunction with experimental results were utilized for critical understanding of SiC susceptor heating. The influence of physical parameters: microwave input power, microwave frequency, placement of susceptor inside cavity and dimension of susceptor on electric field distribution and temperature profile of SiC susceptor are also investigated and presented in detail. Among all susceptor materials, SiC exhibited highest heating rate in similar operating parameters. The temperature obtained for SiC susceptor during microwave heating without casket (80 °C) was significantly lower than that with casket insulation (1003 °C). A susceptor of 10 mm thickness with cross-section of 625 mm² was found to be the optimum dimension for SiC susceptor. The maximum temperature obtained by the SiC susceptor was 658 °C, 1003 °C, 1182 °C and 1380 °C for input power of 800 W, 1200 W, 1600 W and 2000 W respectively. Simulation data were validated with experimental results. The results exhibit a good agreement between simulation results and experimental data.

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基于感受器的设计策略，通过实验分析、三维多物理模拟和参数优化提高微波混合加热能力

基于高效节能的体积处理，微波处理已经获得了显著的认可。感受器辅助微波加热是一种新兴的技术，因为它比传统的微波处理具有优势。Susceptor通过提供双向加热，减少材料表面的热量损失，有助于加快微波处理。本研究提出了通过考虑不同类型的微波吸收材料（氧化铝、氧化钇稳定的氧化锆、氮化硼和碳化硅）进行有效微波加热来选择合适的感受器材料的方法（理论、模拟和实验）。理论分析（介电性能、穿透深度、吸收损耗和反射损耗）表明碳化硅（SiC）是最合适的感受器。基于COMSOL Multiphysics的模拟和实验结果被用于对SiC感受器加热的关键理解。还详细研究和介绍了微波输入功率、微波频率、基座在腔体内的位置和基座的尺寸等物理参数对SiC基座的电场分布和温度分布的影响。在所有感受器材料中，SiC在相似的操作参数下表现出最高的加热速率。在没有棺材的微波加热过程中，SiC基座获得的温度（80°C）显著低于有棺材绝缘的温度（1003°C）。发现具有625mm2横截面的10mm厚度的基座是SiC基座的最佳尺寸。当输入功率分别为800W、1200W、1600W和2000W时，SiC基座获得的最高温度分别为658℃、1003℃、1182℃和1380℃。仿真数据与实验结果进行了验证。仿真结果与实验数据吻合较好。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Thermal Sciences 工程技术-工程：机械

CiteScore

8.10

自引率

11.10%

发文量

531

审稿时长

55 days

期刊介绍： The International Journal of Thermal Sciences is a journal devoted to the publication of fundamental studies on the physics of transfer processes in general, with an emphasis on thermal aspects and also applied research on various processes, energy systems and the environment. Articles are published in English and French, and are subject to peer review. The fundamental subjects considered within the scope of the journal are: * Heat and relevant mass transfer at all scales (nano, micro and macro) and in all types of material (heterogeneous, composites, biological,...) and fluid flow * Forced, natural or mixed convection in reactive or non-reactive media * Single or multi–phase fluid flow with or without phase change * Near–and far–field radiative heat transfer * Combined modes of heat transfer in complex systems (for example, plasmas, biological, geological,...) * Multiscale modelling The applied research topics include: * Heat exchangers, heat pipes, cooling processes * Transport phenomena taking place in industrial processes (chemical, food and agricultural, metallurgical, space and aeronautical, automobile industries) * Nano–and micro–technology for energy, space, biosystems and devices * Heat transport analysis in advanced systems * Impact of energy–related processes on environment, and emerging energy systems The study of thermophysical properties of materials and fluids, thermal measurement techniques, inverse methods, and the developments of experimental methods are within the scope of the International Journal of Thermal Sciences which also covers the modelling, and numerical methods applied to thermal transfer.