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Journal of Enhanced Heat Transfer
Fator do impacto: 0.562 FI de cinco anos: 0.605 SJR: 0.175 SNIP: 0.361 CiteScore™: 0.33

ISSN Imprimir: 1065-5131
ISSN On-line: 1026-5511

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Journal of Enhanced Heat Transfer

DOI: 10.1615/JEnhHeatTransf.v5.i3.10
pages 139-163

Enhanced Electric Field Effect on a Flame

Maija Zake
Institute of Physics, University of Latvia, Salaspils-1, Miera Street, 32, LV-2169, Latvia
Modris Purmals
Institute of Physics, University of Latvia, Salaspils, Latvia
Mara Lubane
Institute of Physics, University of Latvia, Salaspils, Latvia

RESUMO

The results of a laboratory and both industrial experimental investigations of the interaction between a propane flame and external radial electric field are presented in this paper. The effect of the radial electric field on a flame is found by the local measurements of a flame temperature, composition and radiation of gas compounds. It is obtained that the external electric field and flame interaction markedly affects processes of a free electron and ion transfer in a field direction. The intensification of a free electron transfer results in a more intensive excitation, dissociation and chemical interaction of gas compounds, while an intensification of a transfer of positive ions by an external field results in an enhanced heat and mass transfer in a field direction. In fact, the processes of interrelated heat and mass transfer are accompanied by the deformation of a radial and longitudinal distribution of a flame temperature and composition. The optimal conditions of a field and flame interaction for achieving an increase in a heat efficiency of district heating boiler houses with simultaneous reduction of NOx and CO emission in atmospheric pollutants are examined.


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