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首页> 外文期刊>Military operations research >Development of nickel bi-porous wicks for miniature loop heat pipe applications
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Development of nickel bi-porous wicks for miniature loop heat pipe applications

机译：开发用于微型回路热管的镍双孔灯芯

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摘要

Purpose - Miniature loop heat pipes (MLHPs) are highly efficient passive heat transfer devices, which have considerable advantages over conventional heat pipes. Currently, miniature LHPs with ammonia and water as working fluids have been developed and utilized in electronics cooling within temperature range of 50℃-70℃ at any orientation in 1 -g conditions. Design/methodology/approach - The authors studied the standard procedure for the development of bi-porous nickel wicks and their characterization. Three different shaped nickel powders were studied, and best fitting nickel powder for electronics cooling application was reported. The manufacturing of bi-porous wick structures was analyzed with parameters such as porosity, permeability, capillary pressure and effective thermal conductivity for efficient performance of MLHP. Findings - The study investigated the sintering process for number of samples to identify effective sample for the particular application. It is found that carbonyl nickel powder (type 287) with particle size of 2.6-3.3 (im gives promising results. Permeability and porosity were found to be highest in this case. Originality/value - It is found that carbonyl nickel powder type with particle size gives promising results. Permeability and porosity was found to be highest in this case.
机译：目的-微型回路热管（MLHP）是高效的被动式传热设备，与传统的热管相比具有相当大的优势。目前，已经开发出了以氨和水为工作液的微型LHP，并已将其用于电子冷却中，温度范围为50℃-70℃，在1 g条件下的任何取向。设计/方法/方法-作者研究了开发双孔镍芯的标准程序及其特性。研究了三种不同形状的镍粉，并报道了最适合电子冷却应用的镍粉。使用多孔性，渗透性，毛细压力和有效导热率等参数对双孔芯结构的制造进行了分析，以实现MLHP的高效性能。调查结果-该研究调查了样品数量的烧结过程，以识别适用于特定应用的有效样品。已发现粒径为2.6-3.3的羰基镍粉（287型）给出了可喜的结果。在这种情况下，渗透率和孔隙率最高。独创性/价值-发现带有颗粒的羰基镍粉类型尺寸给出了可喜的结果，在这种情况下，渗透率和孔隙率最高。

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