An Experimental Study on Flashing Phenomenon of Liquid Nitrogen.
An Experimental Study on Flashing Phenomenon of Liquid Nitrogen.
复制标题
液氮闪蒸现象的实验研究。
DOI：
10.1299/kikaib.58.1498
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发表时间：
1992
期刊：
影响因子：
--
通讯作者：
I. Tokura
中科院分区：
文献类型：
--
作者：
S. Yokoyama;Y. Hanaoka;I. Tokura
本研究的目的是阐明低温液氮在快速减压下闪蒸现象的基本特征。利用带窗的低温恒温器进行了液氮闪蒸实验。实验结果表明，低温区产生的气泡在液氮中生长和上升时，会发生快速降压后的压力恢复过程。根据初始液体温度对应的饱和压力，预测了容器内的局部最小压力和压力恢复。局部最小压力很大程度上取决于初始温度，而不是减压速率。
The aim of this study is to clarify the fundamental features of the flashing phenomenon of cryogenic liquid nitrogen under rapid depressurization. Liquid nitrogen flashing experiments have been carried out using a cryostat with windows. From these experimental results, it is shown that a pressure recovery process after rapid depressurization occurs when bubbles generated in the lowtemperature region grow and rise in liquid nitrogen. Furthermore, local minimum pressure and pressure recovery within the vessel are predicted by saturated pressure corresponding to initial liquid temperature. The local minimum pressure depends strongly on initial temperature rather than on the rate of depressurization.