Abstract
A simple design micro-heat pipe was proposed. It was composed of 20.0×20.0mm square flow circuit which had two adjacent narrow-sides (1.0×1.0mm^2 or 0.5×1.0mm^2) and two adjacent wide-sides (5.0×1.0mm^2 or 2.5×1.0mm^2). A heating spot was at the narrow side and a cooling spot was at the wide side. Working fluid was ethanol. The flow circuit was placed horizontally. It was confirmed that heat transport from the narrow-side heating spot to the wide-side cooling spot was produced in the micro heat pipe. An analysis of a flow mechanism was performed by solving a simple flow equation based on the flow resistance. It was proved that one-way circulation flow could be formed in the flow circuit. Predicted flow velocities were close to measured velocities. The heat transport efficiency per unit mass of the proposed micro heat pipe was much better than the heat conduction-type heat transport device of any metallic plate.
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