化工学报 ›› 2009, Vol. 60 ›› Issue (6): 1373-1379.

• 传递现象 • 上一篇    下一篇

功能热流体强化脉动热管的热输送特性

林梓荣;汪双凤;张伟保;陈金建   

  1. 华南理工大学传热强化与过程节能教育部重点实验室
  • 出版日期:2009-06-05 发布日期:2009-06-05

Heat-transport capability of pulsating heat pipe 
enhanced by functional thermal fluids

LIN Zirong; WANG Shuangfeng; ZHANG Weibao; CHEN Jinjian   

  • Online:2009-06-05 Published:2009-06-05

摘要:

考察了以水为工质,在不同的加热功率和不同的充液率情况下,脉动热管在不同加热方式(垂直底部加热和水平一侧加热)时的热输送特性。固定充液率,对比了脉动热管采用不同工质(微胶囊流体、氧化铝纳米流体、水)在不同加热功率、不同放置加热方式下的热输送特性。结果发现:功能热流体(微胶囊流体、氧化铝纳米流体)作为脉动热管的工质都起到强化热输送能力的作用,均优于水。垂直底部加热时,1%微胶囊流体作为工质的脉动热管的热输送能力较优,水平一侧加热时,0.1%氧化铝纳米流体较优,但微胶囊流体稳定性要比氧化铝纳米流体好。

关键词:

脉动热管, 纳米流体, 微胶囊流体, 热输送特性

Abstract:

Experimental investigation was conducted to explore the heattransport capability of pulsating heat pipe (PHP) working with different working fluidsThe heat transfer characteristics of PHP with water as working fluid were studied under different liquid filling rates, different heat loads and different inclination angles (0°and 90°).The heattransport capabilities of pulsating heat pipes with different working fluids (FS39E microcapsule fluid, water, Al2O3 nanofluid) were comparedThe results showed that the heattransport capability of PHP could be enhanced by using functional thermal fluids (FS39E microcapsule fluid and Al2O3 nano-fluid) as working fluid under specific conditionWhen using vertical bottom heating mode (inclination angle=90°), 1% FS-39E microcapsule fluid was the better working fluidWhen using horizontal heating mode (inclination angle=0°), 0.1% Al2O3 nanofluid was the better working fluidBut the stability of microcapsule fluid was much better than Al2O3 nanofluid

Key words:

脉动热管, 纳米流体, 微胶囊流体, 热输送特性