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Homogeneous dielectric heating in large microwave ovens by excitation of multiple eigenmodes at their resonance frequencies

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Homogeneous dielectric heating in large microwave ovens by excitation of multiple eigenmodes at their resonance frequencies

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dc.contributor.author Neumaier, Dominik es_ES
dc.contributor.author Sanseverino, Sabrina es_ES
dc.contributor.author Link, Guido es_ES
dc.contributor.author Jelonnek, John es_ES
dc.date.accessioned 2019-11-11T13:21:28Z
dc.date.available 2019-11-11T13:21:28Z
dc.date.issued 2019-10-15
dc.identifier.isbn 9788490487198
dc.identifier.uri http://hdl.handle.net/10251/130717
dc.description.abstract [EN] The proper use of microwave heating can significantly increase the production cycle time and energy efficiency in industrial heating processes compared to conventional heating methods. The main challenge of this technique is to improve the temperature uniformity in the product exposed to standing waves inside the microwave oven. In opposite to the magnetron, solid-state amplifiers (SSA) offer the possibility to increase the homogeneity by changing the amplitude, frequency and phase with the help of intelligent control methods [1]. In this work, the variation of the frequency and the amplitude of the SSA is considered. The multimode microwave oven used in the experiment has an industrial size of 535 mm x 510 mm x 395 mm (Figure 1). The SSA was operated in the frequency range from 2.4 GHz to 2.5 GHz. It consisted of a new 300 W solid state microwave source from HBH microwave GmbH, Germany. An antenna system was developed based on numerical simulation with CST Microwave Studio. The positions of four loop antennas were optimized to excite at least 90 % of the possible 32 eigenmodes [2] of the unloaded cavity. At the roof of the cavity, an IR camera was installed to observe the temperature distribution of the load during heating. A sheet of paper was used as the thermal load. It was placed on a PTFE plate as a sample holder. Figure 1 exemplary illustrates the comparison of the simulated power distribution with the measured temperature distribution for two representative eigenmodes. As can be expected from the figures, an optimized combination of different modes will lead to a significantly improved temperature uniformity in the material. Latest results obtained with different type of loads will be presented. es_ES
dc.description.sponsorship The authors acknowledge the financial support by the Federal Ministry for Economic Affairs and Energy of Germany in the project ZF4204602PR6. es_ES
dc.format.extent 8 es_ES
dc.language Inglés es_ES
dc.publisher Editorial Universitat Politècnica de València es_ES
dc.relation BMWI/ZF4204602PR6
dc.relation.ispartof AMPERE 2019. 17th International Conference on Microwave and High Frequency Heating es_ES
dc.rights Reconocimiento - No comercial - Sin obra derivada (by-nc-nd) es_ES
dc.subject Energy Production by Microwaves es_ES
dc.subject Microwave CVD es_ES
dc.subject EM Modelling es_ES
dc.subject Microwave Material interaction es_ES
dc.subject Dielectric Properties es_ES
dc.subject Dielectric Properties Measurement es_ES
dc.subject Solid State Microwave es_ES
dc.subject Microwave Processing es_ES
dc.subject Microwave Chemistry es_ES
dc.subject Microwave applicators design es_ES
dc.title Homogeneous dielectric heating in large microwave ovens by excitation of multiple eigenmodes at their resonance frequencies es_ES
dc.type Capítulo de libro es_ES
dc.type Comunicación en congreso es_ES
dc.identifier.doi 10.4995/AMPERE2019.2019.9877
dc.rights.accessRights Abierto es_ES
dc.description.bibliographicCitation Neumaier, D.; Sanseverino, S.; Link, G.; Jelonnek, J. (2019). Homogeneous dielectric heating in large microwave ovens by excitation of multiple eigenmodes at their resonance frequencies. En AMPERE 2019. 17th International Conference on Microwave and High Frequency Heating. Editorial Universitat Politècnica de València. 166-173. https://doi.org/10.4995/AMPERE2019.2019.9877 es_ES
dc.description.accrualMethod OCS es_ES
dc.relation.conferencename Ampere 2019 es_ES
dc.relation.conferencedate Septiembre 09-12,2019 es_ES
dc.relation.conferenceplace Valencia, Spain es_ES
dc.relation.publisherversion http://ocs.editorial.upv.es/index.php/AMPERE2019/AMPERE2019/paper/view/9877 es_ES
dc.description.upvformatpinicio 166 es_ES
dc.description.upvformatpfin 173 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.relation.pasarela OCS\9877 es_ES
dc.contributor.funder Bundesministerium für Wirtschaft und Energie, Alemania


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