期刊文献+

吸附作用在纳米颗粒悬浮液换热强化中的试验与机理研究 被引量:3

EFFECT OF SURFACE ADSORPTION ON HEAT TRANSFER ENHANCEMENT FOR LIQUID WITH NANO-PARTICLE SUSPENSIONS
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摘要 本文通过测量SiO_2纳米颗粒在不同工质、不同浓度的悬浮液在不同温度下的导热系数,结合了液氮冷冻、切割并在断面上复形的技术,并利用电镜观察了纳米颗粒在液体中的分布、团聚和液体与之的亲和性。着重分析了纳米颗粒悬浮液中SiO_2纳米颗粒与液体的亲和性对悬浮液导热性能影响的机理。文中提出了SiO_2纳米颗粒的表面吸附层和在作布朗运动时出现”微对流”而使悬浮液换热强化。 By measuring the effective thermal conductivity, taking photos of the distribution of the nano-particles in liquid, we try to analyze the interfacial phenomena between nano-particles suspended in liquid, the 'micro convection' could enhance the heat transfer performance.
出处 《工程热物理学报》 EI CAS CSCD 北大核心 2003年第4期664-666,共3页 Journal of Engineering Thermophysics
基金 国家自然科学基金(No.59995550-3)
关键词 纳米颗粒悬浮液 布朗运动 吸附层 换热强化 Nano-particle suspension Brown motion affinity heat-conduction enhancement
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参考文献10

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同被引文献33

  • 1帅美琴,施明恒,李强.纳米颗粒悬浮液池内泡状沸腾机理[J].东南大学学报(自然科学版),2006,36(5):785-789. 被引量:8
  • 2彭小飞,俞小莉,夏立峰,余凤芹.纳米流体有效热导率预测[J].化工学报,2007,58(2):299-303. 被引量:18
  • 3王补宣.工程传热传质学(下册)[M].北京:科学出版社,2002..
  • 4骆仲泱,倪明江,余春江,等.纳米流体太阳能窗式集热器:中国,200610053634.9[P].2006-09-27.
  • 5Polidori G, Fohanno S, Nguyen C T. A Note on heat transfe rmodeling of newtonian nanofluids in laminar free convection[J]. International Journal of Thermal Sciences, 2007, 46(8): 739-744.
  • 6Wang X, Xu X, Choi U S. Thermal conductivity of nanoparticle-fluid mixture[J]. J Thermophysics and Heat Transfer, 1999, 13(4): 474-480.
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