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Effect of electric field generated by micro-scaled-electrode on pool boiling

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2 Author(s)
Kano, I. ; Grad. Sch. of Sci. & Eng., Yamagata Univ., Yamagata, Japan ; Takahashi, Y.

This paper describes results from an experimental study of the effect of an electro-hydro-dynamics (EHD) and of an electrostatic force on the critical heat flux (CHF) in pool boiling. Dielectric liquid of HFE-7100(3M), which has a boiling point of 59.8°C, was selected as a working fluid. In order to generate high electric fields with the application of low voltages, a micro patterned electrode with an array of planar comb finger was made by micro-electro-mechanical-systems (MEMS) technology. The electrode had ten slits whose width was 400μm between electrode pairs so as to remove vapor bubbles from a heat transfer surface by the electro static force. A cooling device fabricated with the electrode was evaluated by different applied voltages. As a result, the application of voltage enhanced heat transfer.

Published in:

Industry Applications Society Annual Meeting (IAS), 2012 IEEE

Date of Conference:

7-11 Oct. 2012