Transient heat transfer characteristics of liquid helium
Transient heat transfer characteristics of liquid helium
复制标题
液氦瞬态传热特性
DOI：
10.2221/jcsj.11.117
复制
发表时间：
1975
期刊：
影响因子：
--
通讯作者：
O. Tsukamoto
中科院分区：
文献类型：
--
作者：
O. Tsukamoto
研究了液氦的瞬态传热特性。测量了脉冲加热的临界燃尽热流密度，给出了临界燃尽热流密度与热脉冲长度之间的经验关系式。通过观察真空蒸发法在被加热表面上制备的铅膜温度传感器的超温转变来检测烧毁，讨论了脉冲加热的沸腾传热机理，导出了临界烧毁热流密度与热脉冲长度的理论关系式。经验数据很好地满足了理论关系。
The transient heat transfer characteristics of liquid helium are investigated. The critical burnout heat fluxes for pulsive heating are measured, and empirical relations between the critical burnout heat flux and the length of the heat pulse are given. The burnout is detected by observing the super-to-normal transition of the temperature sensor which is a thin lead film prepared on the heated surface by vacuum evaporation.The mechanism of boiling heat transfer for pulsive heating is discussed, and theoretical relations between the critical burnout heat flux and the length of the heat pulse are derived. The empirical data satisfy the theoretical relations fairly well.