Analysis of a new self-pressurization model for cryogenic fluid tank

27th International Cryogenics Engineering Conference and International Cryogenic Materials Conference 2018

Wang, Guopeng^1^2 ; Li, Jianguo^1 ; Zhao, Yanan^1 ; Hong, Guotong^1^2

Key Laboratory of Space Energy Conversion Technologies, Technical Institute of Physics and Chemistry CAS, Beijing

100190, China^1

University of Chinese Academy of Sciences, Beijing

100190, China^2

关键词: Cryogenic fluids;    Fill level;    High fills;    Liquid Phase;    Lumped parameter method;    One dimension;    Self pressurization;    Vapour-phase;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/502/1/012064/pdf
DOI  :  10.1088/1757-899X/502/1/012064

来源: IOP

【 摘 要 】

In order to analyse the self-pressurization of the cryogenic fluid tank more accurately and further understand the law of the cryogenic fluid storage, a new self-pressurization model considering the temperature gradient of the vapour is presented. This model uses one-dimension method to deal with the vapour phase and lumped parameter method to deal with the liquid phase. Another two classical self-pressurization models are used to compare with this model. Based on this model, the comparison between the computation and the experimental results is conducted. The calculated results show that when the tank is in low fill level, the computation is in agreement with the experiment, but in high fill level the difference increases. Experimental results indicate that the new model can properly predict the pressurization curves of the tank.Published under licence by IOP Publishing Ltd.