Heat transfer performance of porous titanium

IF 3.1 2区 材料科学 Q1 METALLURGY & METALLURGICAL ENGINEERING
Shi-feng Liu , An Li , Yao-jia Ren , Dong-feng Li , Zhao-hui Zhang
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引用次数: 3

Abstract

Porous titanium fibre materials with different structural parameters were prepared by vacuum sintering method. The thickness, porosity and wire diameter of prepared materials were investigated to understand the effects of structural parameters on pool heat transmission performance of titanium fibre porous material. As a result, better heat transfer performance is obtained when overheating is less than 10 °C. In addition, when the wire diameter is smaller, the heat transfer is better. However, when superheating is above 10 °C, heat transfer performance can be improved by increasing the wire diameter. Moreover, thickness influences the superficial area of the prepared material and affects the thermal resistance when bubbles move inside the material; superficial area and thermal resistance are the two key factors that jointly impact the heat transfer in relation to the thickness of the materials. Experimental results also show that the materials of 3 mm in thickness exhibit the best performance for heat transmission. Furthermore, changes in porosity affect the nucleation site density and the resistance to bubble detachment; however, the nucleation site density and the resistance to bubble detachment conflict with each other. In summary, the titanium fibre porous material with a 50% porosity exhibits suitable heat transfer performance.

多孔钛的传热性能
采用真空烧结法制备了不同结构参数的多孔钛纤维材料。研究制备材料的厚度、孔隙率和丝径,了解结构参数对钛纤维多孔材料池传热性能的影响。因此,当过热小于10℃时,传热性能较好。此外,线径越小,传热效果越好。然而,当过热超过10°C时,可以通过增加线径来改善传热性能。此外,当气泡在材料内部运动时,厚度影响所制备材料的表面积并影响热阻;表面面积和热阻是影响材料厚度传热的两个关键因素。实验结果还表明,厚度为3mm的材料传热性能最好。孔隙率的变化影响成核部位密度和气泡脱离阻力;然而,成核点密度与气泡脱离阻力之间存在矛盾。综上所述,孔隙率为50%的钛纤维多孔材料具有合适的传热性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
4.30
自引率
0.00%
发文量
2879
审稿时长
3.0 months
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