集成氢仲正催化转化的蒸气冷却屏对液氢储罐自增压的影响

李科; 朱顺; 文键

doi:10.7652/xjtuxb202507017

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集成氢仲正催化转化的蒸气冷却屏对液氢储罐自增压的影响

—————————————————————— | 更新时间：2025-07-09

- 集成氢仲正催化转化的蒸气冷却屏对液氢储罐自增压的影响
- Effects of Vapor-Cooled Shields Integrated with Para-Ortho Hydrogen Catalytic Conversion on Self-Pressurization of Liquid Hydrogen Storage Tanks
- 西安交通大学学报 2025年59卷第7期页码：170-181
- 作者机构：
  
  西安交通大学能源与动力工程学院， 710049，西安
- 作者简介：
  
  李科（1992—），男，助理教授；
  文键，女，教授，博士生导师。
- 基金信息：
  
  国家自然科学基金重大资助项目(52495001);中国博士后基金资助项目(2022M722518);陕西省自然科学基础研究计划资助项目(S2024-JC-QN-2738)
- DOI：10.7652/xjtuxb202507017
  中图分类号： TB657
- 收稿：2024-10-17，
  
  网络首发：2025-03-11，
  
  纸质出版：2025-07-10
- 稿件说明：
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李科, 朱顺, 文键. 集成氢仲正催化转化的蒸气冷却屏对液氢储罐自增压的影响[J]. 西安交通大学学报, 2025,59(7):170-181.

LI Ke, ZHU Shun, WEN Jian. Effects of Vapor-Cooled Shields Integrated with Para-Ortho Hydrogen Catalytic Conversion on Self-Pressurization of Liquid Hydrogen Storage Tanks[J]. Journal of Xi’an Jiaotong University, 2025, 59(7): 170-181.
李科, 朱顺, 文键. 集成氢仲正催化转化的蒸气冷却屏对液氢储罐自增压的影响[J]. 西安交通大学学报, 2025,59(7):170-181. DOI： 10.7652/xjtuxb202507017.

LI Ke, ZHU Shun, WEN Jian. Effects of Vapor-Cooled Shields Integrated with Para-Ortho Hydrogen Catalytic Conversion on Self-Pressurization of Liquid Hydrogen Storage Tanks[J]. Journal of Xi’an Jiaotong University, 2025, 59(7): 170-181. DOI： 10.7652/xjtuxb202507017.

摘要

为了有效提升液氢储罐的绝热性能，构建了真空多层绝热液氢储罐的瞬态传热传质模型，并研究了集成氢仲正催化转化的蒸气冷却屏的影响。引入蒸气消耗因子

、休眠期延长因子

等无量纲参数分别量化蒸气消耗量和储罐休眠期；定义单位因子

为

与

之比，表征蒸气冷却屏屏蔽漏热的能力。对比分析了有无仲正催化转化时蒸气冷却屏无量纲位置、质量流量和开启时刻等参数对储罐休眠期的影响。结果表明：

和

均随蒸气冷却屏无量纲位置的增大而先增大后减小；当

为0.012 8且蒸气冷却屏无量纲位置是0.167时，加入仲正催化转化相比未加入时的两个指标的增幅最大，为22.77%；随着蒸气冷却屏质量流量的减小，两个指标均先增大后减小；当蒸气冷却屏无量纲位置和蒸气冷却屏质量流量均较小时，加入仲正催化转化后两个指标的增幅较大；两个指标随着蒸气冷却屏开启时刻的推迟而先增大后减小；在

和蒸气冷却屏无量纲位置分别为0.025 6和0.233的条件下，蒸气冷却屏开启时刻设置为第40.51 d时，加入仲正催化转化后

的增幅最大为22.32%。

Abstract

To effectively improve the thermal insulation performance of liquid hydrogen storage tanks

a transient heat and mass transfer model for vacuum multilayer insulated liquid hydrogen storage tanks is developed

and the effect of integrating a vapor-cooled shield with ortho-para hydrogen catalytic conversion is investigated. Dimensionless parameters

including the vapor consumption factor (

) and the dormancy period extension factor (

)

are introduced to quantify vapor consumption and tank dormancy period

respectively. A unit factor (

)

defined as the ratio of

is used to characterize the heat-leak shielding capability of the vapor-cooled shield. A comparative analysis is conducted on the effects of key parameters

such as the dimensionless position of the vapor-cooled shield

mass flow rate

and activation timing

on the tank dormancy period

with and without ortho-para catalytic conversion. The results indicate that: Both

and

initially increase and then decrease as the dimensionless position of the vapor-cooled shield increases; when

=0.012 8 and the dimensionless position of the vapor-cooled shield is

0.167

the inclusion of ortho-para catalytic conversion yields the maximum improvement in both metrics (22.77%) compared to the non-catalytic case; as the mass flow rate of the vapor-cooled shield decreases

both metrics first increase and then decrease; the improvement in both metrics is more pronounced when the dimensionless position and mass flow rate of the vapor-cooled shield are relatively small; both metrics initially increase and then decrease with delayed activation of the vapor-cooled shield; under conditions where

=0.025 6 and the dimensionless position of the vapor-cooled shield is 0.233

activating the shield at 40.51 d achieves the maximum improvement of 22.32% in

with ortho-para catalytic conversion.

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