压力容器2025，Vol.42Issue(10)：62-67,6.DOI:10.3969/j.issn.1001-4837.2025.10.006
进液温度对超低温储罐静态蒸发率影响分析
Effect of inlet fluid temperature on the evaporation rate of cryogenic tank
摘要
Abstract
The static evaporation rate(SER)of cryogenic storage tanks is a key indicator for evaluating thermal insulation performance.Using a 120 m³ vacuum-insulated cryogenic storage tank(at-269 ℃)as the test subject,experiments were conducted according to the GB/T 18443.5-2010,monitoring temperature,pressure,and vapor-phase flow rate.Quantitative relationships between temperature and saturated vapor pressure,latent heat of vaporization,and density were fitted based on literature data.The results show that when the inlet temperature increased from 4.2 K to 5.2 K,the saturated vapor pressure increased by 123%,the latent heat of vaporization approached zero,the density decreased by 28%,and the SER rose from 0.33%to 1.31%—A trend validated through on-site measurements.These findings indicate that liquid phase stability deteriorates under high-temperature non-standard operating conditions,and traditional testing methods may significantly underestimate actual evaporation losses,necessitating system pressure and fluid physical property corrections.This study,for the first time,systematically reveals the temperature sensitivity mechanism of ultra-cryogenic storage tanks.The proposed correction model along with recommendations for dynamic monitoring provides important insights for evaluating and optimizing the insulation performance of cryogenic storage tanks,thereby promoting the standardization and precision of cryogenic storage and transportation technologies.关键词
超低温储罐/静态蒸发率/温度/压力/潜热Key words
cryogenic storage tank/static evaporation rate/temperature/pressure/latent heat分类
机械制造引用本文复制引用
郭超,徐鸿,李建江,韩占方,周文志,刘峰..进液温度对超低温储罐静态蒸发率影响分析[J].压力容器,2025,42(10):62-67,6.基金项目
中国石油天然气集团有限公司关键核心攻关项目(2021ZG13) （2021ZG13）
中国石油天然气集团有限公司攻关性应用性科技专项(2023ZZ30) （2023ZZ30）
