首页|Explosive boiling of liquid nitrogen in a long thin tube and its application to the detection of a local temperature rise
Explosive boiling of liquid nitrogen in a long thin tube and its application to the detection of a local temperature rise
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NSTL
Elsevier
To promote the commercial use of high-temperature superconducting devices， the ability to detect temperature anomalies easily and reliably and thereby protect the devices is important。 In particular， a sudden local temperature increase due to a superconducting-to-normal transition can damage a device。 In the present study， we propose a method to detect explosive boiling of superheated liquid nitrogen sealed in a long thin tube using a pressure gauge connected to the end of the tube。 Experiments using a stainless-steel tube with an inner diameter of 1 mm and a maximum length of 50 m under various conditions showed that the local temperature rise caused explosive boiling at a temperature slightly below the superheat limit of 110 K for liquid nitrogen; the results also showed that the rapid pressure increase was transmitted to the end of the tube at approximately the speed of sound (similar to 830 m/s)。 The proposed method of placing a thin tube along high-temperature superconducting conductors or cryogenic structures can be used to easily detect a local temperature rise。
High temperature superconducting deviceLocal temperature rise detectionExplosive boilingLiquid nitrogenSuperheated liquidHOMOGENEOUS NUCLEATIONSUPERHEATLIMITSWATER
NSTL
Elsevier
