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銅纖維多孔表面孔結(jié)構(gòu)對(duì)池沸騰換熱性能的影響
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西北有色金屬研究院金屬多孔材料國(guó)家重點(diǎn)實(shí)驗(yàn)室,西北有色金屬研究院金屬多孔材料國(guó)家重點(diǎn)實(shí)驗(yàn)室,西北有色金屬研究院金屬多孔材料國(guó)家重點(diǎn)實(shí)驗(yàn)室,西北有色金屬研究院金屬多孔材料國(guó)家重點(diǎn)實(shí)驗(yàn)室,西北有色金屬研究院金屬多孔材料國(guó)家重點(diǎn)實(shí)驗(yàn)室,西北有色金屬研究院金屬多孔材料國(guó)家重點(diǎn)實(shí)驗(yàn)室,西北有色金屬研究院金屬多孔材料國(guó)家重點(diǎn)實(shí)驗(yàn)室,西北有色金屬研究院金屬多孔材料國(guó)家重點(diǎn)實(shí)驗(yàn)室

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國(guó)家青年科學(xué)基金項(xiàng)目（51201139）；陜西省科技統(tǒng)籌創(chuàng)新工程計(jì)劃項(xiàng)目(2012KTZB03-01-04)


The influence of Cu fiber porous surface structure on boiling heat transfer
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State key Lab of porous metal materials,Northwest institute for nonferrous metal research,Xi’an,State key Lab of porous metal materials,Northwest institute for nonferrous metal research,Xi’an,State key Lab of porous metal materials,Northwest institute for nonferrous metal research,Xi’an,State key Lab of porous metal materials,Northwest institute for nonferrous metal research,Xi’an,State key Lab of porous metal materials,Northwest institute for nonferrous metal research,Xi’an,State key Lab of porous metal materials,Northwest institute for nonferrous metal research,Xi’an,State key Lab of porous metal materials,Northwest institute for nonferrous metal research,Xi’an,State key Lab of porous metal materials,Northwest institute for nonferrous metal research,Xi’an

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    摘要:

    本文分別以30 μm、50 μm、100 μm和160 μm四種直徑的紫銅纖維氈與紫銅基板構(gòu)成的多孔材料為研究對(duì)象，針對(duì)紫銅纖維氈孔隙度分別為90%、80%和75%下，四種直徑的纖維多孔材料池沸騰換熱性能進(jìn)行了檢測(cè)，并與紫銅基板池沸騰換熱性能進(jìn)行對(duì)比。研究結(jié)果表明：紫銅纖維多孔材料具有良好的強(qiáng)化池沸騰換熱性能，當(dāng)過(guò)熱度ΔT <20oC時(shí)，紫銅纖維多孔材料換熱性能是紫銅基板換熱性能的2~5倍；當(dāng)紫銅纖維氈孔隙度為90%時(shí)，多孔材料的換熱性能隨著纖維直徑的減小而增強(qiáng)；當(dāng)纖維直徑為160μm時(shí)，多孔材料的換熱性能隨著纖維氈孔隙度的減小而增強(qiáng)。紫銅纖維多孔材料池沸騰換熱性能受多孔材料內(nèi)部汽化核心數(shù)目、汽泡溢出阻力和毛細(xì)吸力等多種因素的影響。因此，在不同的工作條件下，纖維多孔材料具有不同的最佳孔結(jié)構(gòu)參數(shù)。

    Abstract:

    In this paper, the pool boiling heat transfer performances of copper fiber porous materials which were composited with four different fiber diameters (i.e 30μm, 50μm, 100μm and 160μm) and copper plane plate were investigated under the atmospheric pressure. The experiment results show that the heat transfer performances of the copper fiber porous materials with the porosity of 90%, 80% and 75% are much better than that of the Cu plane plate when the superheat is below 20oC. The heat transfer performance of the copper fiber porous materials is enhanced as decreasing the fiber diameter when the porosity of copper fiber felt was 90%. When the fiber diameter is 160μm, the heat transfer performance is enhanced as decreasing porosity of copper fiber felt. There are many factors which can affect the pool boiling heat transfer, such as the number of active evaporation core, the resistance of bubble overflow and the fiber capillary attraction, and so on. Then, there should be different optimal pore structures under different working conditions.

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支浩,湯慧萍,朱紀(jì)磊,王建忠,敖慶波,馬軍,李愛(ài)軍,許忠國(guó).銅纖維多孔表面孔結(jié)構(gòu)對(duì)池沸騰換熱性能的影響[J].稀有金屬材料與工程,2018,47(2):667~671.[Zhi Hao, Tang Huiping, Zhu Jilei, Wang Jianzhong, Ao Qingbo, Ma Jun, Li Aijun, Xu Zhongguo. The influence of Cu fiber porous surface structure on boiling heat transfer[J]. Rare Metal Materials and Engineering,2018,47(2):667~671.]
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  • 收稿日期:2015-12-17
  • 最后修改日期:2016-09-18
  • 錄用日期:2016-09-21
  • 在線發(fā)布日期: 2018-03-15
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