关键词: 平板微热管, 传热性能, 槽道结构, 工质, 有限元仿真

Abstract: In order to explore the influence of channel cross-section shape and working medium on the performance of flat plate micro heat pipe, the thermal properties of three kinds of flat plate micro heat pipe, such as rectangular groove, trapezoidal groove and regular hexagonal groove, are simulated by Comsol multi-physical field finite element simulation software. For the flat plate heat pipe with working medium of water and ethanol, by comparing the temperature of the center point on the lower surface of the heat pipe under three different heating powers of 30 W, 40 W and 50 W, it is concluded that the regular hexagonal channel structure has better heat transfer performance than the rectangular channel and trapezoidal channel structure. Moreover, in the same channel structure, using water as working medium is more conducive to the heat conduction of flat micro heat pipe than ethanol.

Key words: flatplatemicroheatpipe, heattransferperformance, channelstructure, workingmedium, fieldfiniteelementsimulation