This study describes the effect of an electric field on nucleate boiling and critical heat flux (CHF) in pool boiling. A dielectric liquid of AE-3000 was used as the working fluid. A heating surface was polished to a surface roughness of 0.05 μm. A microsized electrode, in which slits were provided, was designed to generate a nonuniform electric field and produce electrohydrodynamic (EHD) effects with the application of high dc voltages. The obtained results confirmed CHF enhancement as the EHD effects increased CHF to 86.2 W/cm2 with a voltage of −3000 V, which was four times greater than pool boiling in the absence of the electrode. The usual traveling wave on the bubble interface, induced by the Kelvin–Helmholtz instability, was modified by adding the EHD effects. The traveling wave model exhibits the essential features of the phenomenon and shows good agreement with the experimental data.
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Effect of Electric Field Distribution Generated in a Microspace on Pool Boiling Heat Transfer
Ichiro Kano
Ichiro Kano
Mem. ASME
Graduate School of Science and Engineering,
e-mail: kano@yz.yamagata-u.ac.jp
Graduate School of Science and Engineering,
Yamagata University
,Yonezawa, Yamagata 992-8510
, Japan
e-mail: kano@yz.yamagata-u.ac.jp
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Ichiro Kano
Mem. ASME
Graduate School of Science and Engineering,
e-mail: kano@yz.yamagata-u.ac.jp
Graduate School of Science and Engineering,
Yamagata University
,Yonezawa, Yamagata 992-8510
, Japan
e-mail: kano@yz.yamagata-u.ac.jp
Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received July 10, 2013; final manuscript received June 16, 2014; published online July 15, 2014. Assoc. Editor: Ali Khounsary.
J. Heat Transfer. Oct 2014, 136(10): 101501 (9 pages)
Published Online: July 15, 2014
Article history
Received:
July 10, 2013
Revision Received:
June 16, 2014
Citation
Kano, I. (July 15, 2014). "Effect of Electric Field Distribution Generated in a Microspace on Pool Boiling Heat Transfer." ASME. J. Heat Transfer. October 2014; 136(10): 101501. https://doi.org/10.1115/1.4027881
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