功能热流体强化脉动热管的热输送特性

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。

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

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