在本研究中,采用控制热流密度的方法对放置于毛细管中的细小加热丝在液氮中的传热特性进行了实验研究,在实验中详细研究了毛细管直径尺寸d(0.24—3.8mm)和位置倾角θ(0°-90°)对传热特性的影响。实验结果表明毛细管的直径尺寸和位置倾角对传热性能有很大的影响,在一定的范围内对传热具有强化作用。
The characteristics of the boiling heat transfer of liquid nitrogen in the capillary tubes are experimentally investigated in the present study. It is found that the diameter size (0.24-3.8 mm) and the inclination angle (0°~90°) of the capillary tubes have important effects on the boiling heat transfer which can be enhanced in a certain parameter range.