Optimum Design and Efficiency Evaluation of Hydrogen Liquefication Turbo-expander

LI Hongkun; CHE Xunjian; YU Shipeng; CAI Weihua

doi:10.19805/j.cnki.jcspe.2025.240479

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Optimum Design and Efficiency Evaluation of Hydrogen Liquefication Turbo-expander

更新时间：2026-02-02

- Optimum Design and Efficiency Evaluation of Hydrogen Liquefication Turbo-expander
- Chinese Journal of Power Engineering Vol. 45, Issue 3, Pages: 481-488(2025)
- 作者机构：
  
  东北电力大学能源与动力工程学院,吉林,吉林,132012
- 作者简介：
- 基金信息：
- DOI：10.19805/j.cnki.jcspe.2025.240479
  CLC： TQ116.2;TQ050.2
- Published Online：15 March 2025，
  
  Published：2025
- 稿件说明：
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李洪坤,车勋建,宇世鹏,蔡伟华. 氢液化透平膨胀机的优化设计与效率评价动力工程学报, 2025, 45(3): 481-488 https://doi.

org/10.19805/j.cnki.jcspe.2025.240479
李洪坤,车勋建,宇世鹏,蔡伟华. 氢液化透平膨胀机的优化设计与效率评价动力工程学报, 2025, 45(3): 481-488 https://doi. DOI： 10.19805/j.cnki.jcspe.2025.240479.

org/10.19805/j.cnki.jcspe.2025.240479 DOI：

摘要

为了开展基于平均线模型的氢透平膨胀机优化设计

采用遗传算法获得最优性能下的设计参数

探讨了流动系数、负载系数、质量流量和转速等关键参数对氢透平膨胀机性能的影响。结果表明:采用最优设计参数后

氢透平膨胀机的效率提高了3.08%;在不同工况下质量流量和转速变化对氢透平膨胀机效率有显著影响;在最优透平膨胀机结构下

当质量流量在0~0.5 kg/s范围内时

此时氢透平膨胀机效率均高于70%

可实现氢透平膨胀机的高效运行。

Abstract

In order to optimize the design of hydrogen turbo-expander based on the mean-line model

a genetic algorithm (GA) was used to obtain the design parameters under optimal performance. The effects of critical parameters such as flow coefficient

load coefficient

mass flow rate and rotational speed on the performance of hydrogen turbine expander were investigated. Results show that the efficiency of the hydrogen turbo-expander is improved by 3.08% after adopting the optimal design parameters. The variation of mass flow rate and rotational speed has significant influence on hydrogen turbo-expander efficiency. Under the optimal turbo-expander geometry

when the mass flow rate is in the range of 0 to 0.5 kg/s

the efficiency of the hydrogen turbo-expander is above 70%

which can realize efficient operation of the hydrogen turbo-expander.

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references

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