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Journal of Enhanced Heat Transfer
Fator do impacto: 1.406 FI de cinco anos: 1.075 SJR: 0.287 SNIP: 0.653 CiteScore™: 1.2

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

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Journal of Enhanced Heat Transfer

DOI: 10.1615/JEnhHeatTransf.v2.i1-2.100
pages 87-93

Incorporation of EHD Enhancement in Heat Exchangers

Y. Xu
National Refrigeration and Air Conditioning Products, Inc. Brantford, Ont., N3T 5Y6, Canada
R. K. Al-Dadah
School of Engineering Systems and Design, South Bank University, London, SE1 OAA, UK
Tassos G. Karayiannis
Department of Mechanical and Aerospace Engineering Brunel University London, Uxbridge, UP8 3PH, UK
P. H. G. Allen
School of Engineering Systems and Design, South Bank University, London, SE1 OAA, UK; The City University, London, EC1V OHB, England

RESUMO

This paper presents some new thinking about the possible effects of the electrode geometry on the electrohydrodynamic (EHD) enhancement of two phase heat transfer, especially boiling heat transfer. A hypothesis on the dependence of the enhancement effect on the geometry of the EHD electrode system in two phase heat transfer is made. For boiling, a conceptual model regarding the effect of EHD force on the bubble movement and hence enhancement effect is built. Furthermore, a semi-symmetrical electrode geometry is suggested to assess the hypothesis. The outcome of this study can hopefully form the basis of design of practical EHD heat exchangers.


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