Microwave processing: fundamentals and applications |
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| Affiliation: | 1. I3N and Physics Department, University of Aveiro, 3810-193 Aveiro, Portugal;2. Porcelanas da Costa Verde S.A., 3844-909, Vagos, Portugal;3. Technological Centre for Ceramic and Glass Industries, 3025-307 Coimbra, Portugal;4. Centre for Mechanical Technology and Automation (TEMA), Department of Mechanical Engineering, University of Aveiro, 3810-193 Aveiro, Portugal;1. UIET, Panjab University, Chandigarh 160014 India;2. Chitkara University Institute of Engineering and Technology, Chitkara University, Punjab 140401, India |
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| Abstract: | In microwave processing, energy is supplied by an electromagnetic field directly to the material. This results in rapid heating throughout the material thickness with reduced thermal gradients. Volumetric heating can also reduce processing times and save energy. The microwave field and the dielectric response of a material govern its ability to heat with microwave energy. A knowledge of electromagnetic theory and dielectric response is essential to optimize the processing of materials through microwave heating. The fundamentals of electromagnetic theory, dielectric response, and applications of microwave heating to materials processing, especially fiber composites, are reviewed in this article. |
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