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首页> 外文期刊>Experimental Thermal and Fluid Science: International Journal of Experimental Heat Transfer, Thermodynamics, and Fluid Mechanics >Experimental investigation on capillary force of composite wick structure by IR thermal imaging camera
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Experimental investigation on capillary force of composite wick structure by IR thermal imaging camera

机译:红外热像仪对复合芯结构毛细力的实验研究

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摘要

A novel sintered–grooved composite wick structures has been developed for two-phase heat transfer devices. With ethanol as the working fluid, risen meniscus test is conducted to study the capillary force of wick structures. Infrared (IR) thermal imaging is used to identify and locate the liquid meniscus. The effects of sintered layer, V-grooves and powder size on capillary force are explored. The results show that the capillary force of composite wick structures is larger than that of grooved and sintered ones. Interaction wetting between groove and sintered powder happens during the liquid rise in composite wick, which provides an additional source of capillary force. It exhibits a variation of capillary force of composite wicks with different powder size due to the difference of open pore size and quantity in sintered porous matrix.
机译:已经开发出一种新颖的烧结槽复合芯结构,用于两相传热装置。以乙醇为工作液,进行弯月面上升试验,研究芯吸结构的毛细作用力。红外(IR)热成像用于识别和定位液体弯月面。探索了烧结层,V型槽和粉末尺寸对毛细作用力的影响。结果表明,复合芯吸结构的毛细力大于沟槽和烧结芯吸的毛细力。凹槽和烧结粉末之间的相互作用会在复合芯吸液上升期间发生,这提供了毛细作用力的另一个来源。由于开孔尺寸和烧结多孔基体数量的差异,它表现出具有不同粉末尺寸的复合芯的毛细作用力的变化。

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