摘要
对使用三种水基纳米流体作为工质的铜丝平板热管的传热特性进行了实验研究。使用的纳米流体分别是平均粒径20nm的Cu纳米颗粒、平均粒径50nm的Cu纳米颗粒和平均粒径50nm的CuO纳米颗粒的水基悬浮液(简称水基20nm Cu、50nm Cu、50nm CuO纳米流体),着重分析了纳米流体种类,纳米颗粒质量分数、运行温度或工作压力对热管传热特性的影响。研究结果表明,使用纳米流体作为工质可以显著提高热管的传热特性;在不同运行温度条件下,不同的纳米流体均在质量分数1.0%时具有最佳传热效果;纳米流体是一种适用于铜丝平板热管的新型工质。
An experimental study was carried out to investigate the thermal performance of the copper wire-bonded flat heat pipes that employ three types of nanofluid as working fluid.The Cu nanoparticle 20 nm in mean diameter,The Cu nanoparticle in mean diameter of 20 nm and 50 nm and the CuO nanoparticle in mean diameter of 50nm Water-based suspensions(20 nm Cu nanofluid,50 nm Cu nanofluid,50 nm CuO nanofluid) were used in the study.The influences of working fluid,concentration of nanofluid,working temperature or pressure on the thermal performance of heat pipe were investigated emphatically.Experimental results showed that using nanofluid as working fluid can improve the heat pipe heat transfer performance;The best heat transfer performance of heat pipe is achieved when the concentration is 1.0%,even in different operation temperature conditions and using different nanofluid.Nanofluid is a kind of new working fluid to the copper wire-bonded flat heat pipe.
出处
《热科学与技术》
CAS
CSCD
北大核心
2012年第1期89-94,共6页
Journal of Thermal Science and Technology
关键词
纳米流体
平板热管
传热强化
nanofluid
flat heat pipe
enhanced heat transfer
