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Vapor bubble evolution on a heated surface containing open microchannels
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作者:Forster, Christopher J. ; Glezer, Ari ; Smith, Marc K. Publication: American Physical Society, 64th Annual Meeting of the APS Division of Fluid Dynamics, November 20-22, 2011, abstract id. R3.007 Pub Date: November 2011 Power electronics require cooling technologies capable of high heat fluxes at or below the operating temperatures of these devices. Boiling heat transfer is an effective choice for such cooling, but it is limited by the critical heat flux (CHF), which is typically near 125 W/cm2 for pool boiling of water on a flat plate at standard pressure and gravity. One method of increasing CHF is to incorporate an array of microchannels into the heated surface. Microchannels have been experimentally shown to improve CHF, and the goal of this study is to determine the primary mechanisms associated with the microchannels that allow for the increased CHF. |
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