On the effect of resonant microwave fields on temperature distribution in time and space

Microwave assisted chemistry has become a popular research topic within the framework of process intensification. The physics of microwave heating are fundamentally different from those found in conventional processing systems. Heating occurs fast, but non-uniformly in hard-to-predict patterns. In t...

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Bibliographic Details
Published in:International journal of heat and mass transfer 2012-06, Vol.55 (13-14), p.3800-3811
Main Authors: Sturm, Guido S.J., Verweij, Martin D., van Gerven, Tom, Stankiewicz, Andrzej I., Stefanidis, Georgios D.
Format: Article
Language:English
Subjects:
Applied sciences
Chemical engineering
Electromagnetic energy
Exact sciences and technology
Heat and mass transfer. Packings, plates
Heat transfer
Microwaves
Reactors
Resonance
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Summary:Microwave assisted chemistry has become a popular research topic within the framework of process intensification. The physics of microwave heating are fundamentally different from those found in conventional processing systems. Heating occurs fast, but non-uniformly in hard-to-predict patterns. In this study it is shown that these complexities are caused by the resonant nature of the microwave fields present in heating devices. This is demonstrated by means of experiments and modeling concerning heating of water-filled vials in single mode resonant microwave equipment. The results evince highly non-uniform, transient and irregularly behaving heating processes.
ISSN:0017-9310
1879-2189
DOI:10.1016/j.ijheatmasstransfer.2012.02.065