论文部分内容阅读
用沉浸法研究了金属小球以较高速度沉浸入饱和液氮时的淬冷沸腾传热特性。实验用了14个直径为0.1~3.0mm的小球,小球运动速度为2~6m/s,在液氮中的运动距离(称为沉浸距离)为50cm。实验发现,沉浸样品的直径减小和沉浸速度增大,均导致沸腾曲线急剧向右上方移动,同时也讨论了沉浸距离对沸腾的影响。
The immersion method was used to study the quenching and boiling heat transfer characteristics of metal spheres immersed in saturated liquid nitrogen at higher velocity. The experiment used 14 beads with a diameter of 0.1-3.0 mm, the velocity of the ball was 2-6 m / s, and the distance of movement in liquid nitrogen (called the immersion distance) was 50 cm. The experimental results show that the decrease of the diameter of the immersion sample and the increase of the immersion speed all lead to the boiling curve moving sharply to the upper right and the influence of the immersion distance on the boiling.