Experimental study on fast chill-down technique of cryogenic micro-fin pipe

被引：0
|
作者：
Wang L. [1 ]
Cheng C. [2 ]
Li Z. [1 ]
Li Y. [1 ]
机构：
[1] Institute of Refrigeration and Cryogenic Engineering, Xi’an Jiaotong University, Xi’an
[2] Shanghai Institute of Space Propulsion, Shanghai Engineering Research Center of Space Engine, Shanghai
来源：
Huazhong Keji Daxue Xuebao (Ziran Kexue Ban)/Journal of Huazhong University of Science and Technology (Natural Science Edition) | 2024年 / 52卷 / 01期
关键词：
boiling heat transfer; cryogenic quenching; fast fueling; inverse annular flow; micro-fin pipe;
D O I：
10.13245/j.hust.240477
中图分类号：
学科分类号：
摘要：
To guide the development of cryogenic propellant rapid filling technology for launch vehicle, the mechanism of inversed annular flow pattern stability on accelerating pipeline chill-down progress was explored．A cryogenic chill-down test platform was established to evaluate the performance of micro-fin tube by comparing quenching behaviors of straight tube and micro-fin tube cases. It was found that adopting micro-fin tube could reach the time cost by over 60%．In the smooth tube case，the highest heat flux was about 22 kW/m2． Comparatively，the highest heat flux in the micro-fin tube case even reached about 45 kW/m2．Moreover，in the micro-fin tube case，the wall temperature appeared an approximately-linear decreasing tendency in the whole process． The mechanism of micro-fin tube is that a radial velocity component could be induced by introducing the micro-fin structure，and this radial strike acts on the liquid-vapor interface directly，bringing about an interface fluctuation or interface breakup，so that an earlier liquid-wall contact could be caused．Moreover，when employing a high inlet flow rate condition，a micro-fin tube with large fin interval should be suggested since the flow resistance could be reduced remarkably on the premise of heat transfer enhancement． © 2024 Huazhong University of Science and Technology. All rights reserved.
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页码：1 / 7
页数：6
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