Structural Design and Thermal Insulation Performance Simulation of Vapor-Cooled Shields for Liquid Hydrogen Storage Tank
To provide accurate guidance for the design of multilayer insulation (MLI) combined with vapor-cooled shield (VCS) structures in liquid hydrogen storage tank, a three-dimensional steady-state model of MLI/VCS was established. The temperature field of VCS in both parallel and spiral arrangements and...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Journal of Refrigeration Magazines Agency Co., Ltd.
2025-01-01
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| Series: | Zhileng xuebao |
| Subjects: | |
| Online Access: | http://www.zhilengxuebao.com/thesisDetails?columnId=110038430&Fpath=home&index=0 |
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| Summary: | To provide accurate guidance for the design of multilayer insulation (MLI) combined with vapor-cooled shield (VCS) structures in liquid hydrogen storage tank, a three-dimensional steady-state model of MLI/VCS was established. The temperature field of VCS in both parallel and spiral arrangements and the influence of VCS tube diameter, number/length, radiation shield thickness, and vapor mass flow rate on the thermal insulation performance of the tank have been investigated. A comparative analysis of thermal insulation performance between two arrangements was conducted. The results show that for the parallel arrangement, increasing the tube diameter, number of tubes, and mass flow rate improves the tank's insulation performance. For the spiral arrangement, increasing the tube diameter and flow rate follows the same trend as the parallel vertical tubes, whereas the effect of tube length on insulation performance depends on the vapor mass flow rate. The radiation shield thickness has a minor impact on the insulation performance. The relative superiority of the two VCS pipes configurations in terms of insulation performance is also influenced by the venting vaper mass flow rate. In practical engineering applications, the appropriate VCS pipes arrangement should be selected based on the venting method and venting capacity. |
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| ISSN: | 0253-4339 |