理化检验-物理分册2026，Vol.62Issue(5)：18-22,5.DOI:10.11973/lhjy-wl260007
液氮替代液氢的绝热性能检测方法
Detection method of thermal insulation performance of liquid nitrogen instead of liquid hydrogen
摘要
Abstract
Aiming at the problems of high cost,limited supply and high safety risk of liquid hydrogen in the detection of thermal insulation performance of liquid hydrogen cylinders,according to the thermal insulation structure and heat leakage mechanism of liquid hydrogen cylinders,the theoretical derivation and experimental research on the ratio of liquid hydrogen to liquid nitrogen evaporation rate were carried out from the aspects of theoretical basis,evaporation rate conversion method and influencing factors of liquid nitrogen instead of liquid hydrogen detection technology.Taking 1 m3 liquid hydrogen cylinder as the research object,the evaporation rate comparison test was carried out by using liquid hydrogen and liquid nitrogen respectively.The results show that the ratio of liquid hydrogen evaporation rate to liquid nitrogen evaporation rate was 2.68～4.60 when the filling rate was less than 40.5％,and the ratio was positively correlated with the filling rate at low liquid level.The conversion value of evaporation rate when the filling rate was 50％was obtained by further fitting,which was basically consistent with the theoretical derivation results.It provided preliminary data support and reference for liquid nitrogen instead of liquid hydrogen to carry out thermal insulation performance testing.关键词
液氢气瓶/静态蒸发率/绝热性能检测/液氮替代法/漏热模型Key words
liquid hydrogen gas cylinder/static evaporation rate/thermal insulation performance testing/liquid nitrogen substitution method/heat leakage model分类
通用工业技术引用本文复制引用
夏莉,于晓欢,刘金良,陈树军,付越..液氮替代液氢的绝热性能检测方法[J].理化检验-物理分册,2026,62(5):18-22,5.基金项目
广东省市场监督管理局科技项目(2023CT03) （2023CT03）
