中南大学学报（自然科学版）2025，Vol.56Issue(4)：1628-1638,11.DOI:10.11817/j.issn.1672-7207.2025.04.031
二氧化碳小流量供给下的自生增压过程建模
Modeling of self-pressurization process with low flow supply of carbon dioxide
摘要
Abstract
To study the self-pressurization process with low flow supply of carbon dioxide,a new non-thermal equilibrium self-pressurization mathematical model based on the quality to characterize gasification rate of liquid-phase carbon dioxide was proposed.The carbon dioxide self-pressurization supply test platform was established,and three tests with different initial conditions for low flow supply of carbon dioxide were conducted.The results of the mathematical model calculations were compared with the experimental results.The effects of initial temperature(from 278.15 K to 308.15 K)and filling density(800 kg/m3 to 1000 kg/m3)on the effective supply rate of liquid-phase carbon were studied.The results indicate that the mathematical model calculations of pressure and temperature are in good agreement with the experimental results,validating the accuracy of the model.In the modeling process,the heat exchange between the storage tank and carbon dioxide should be considered,while the heat flux between liquid-phase and gas-phase carbon dioxide is relatively small and can be neglected in the modeling.Higher initial temperature of carbon dioxide and lower filling density can result in higher gasification mass during the carbon dioxide supply process,reducing the effective supply rate.关键词
二氧化碳/小流量供给/自生增压/干度Key words
carbon dioxide/low flow supply/self-pressurization/quality分类
通用工业技术引用本文复制引用
熊宇,鲁寨军,甘宁..二氧化碳小流量供给下的自生增压过程建模[J].中南大学学报（自然科学版）,2025,56(4):1628-1638,11.基金项目
湖南省科技创新计划项目(2023RC1026)(Project(2023RC1026)supported by the Science and Technology Innovation Program of Hunan Province) （2023RC1026）
