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Abstract
Experimental study on self-oscillation two-phase flow in microchannel has been performed. A single winding flow path consists of 20 turns microchannels fabricated on a silicon wafer the size of which was 30mm×33mm. Test fluid was R141b and the liquid fractions were 0, 61.9, 72.4 and 81.2%. Flow oscillation was observed when the bottom of channels was heated and the top cooled. The effective thermal conductivity during the flow oscillation was by 3.3 times as large as that without oscillation at the maximum case.
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