Conceptual design of a high efficiency large capacity hydrogen liquefier
Abstract
The aim of this paper is to propose a hydrogen liquefier with very high efficiency. One important theoretical tool is the exergy analysis of the single process step as well as the overall cycle. This will be needed for the choice of the optimum hydrogen feed pressure as well as for the handling of the ortho-para conversion. Modern helium refrigerators are being built with up to 10 expansion turbines placed strategically in the cycle to obtain overall optimum efficiency. We are proposing to do the same for the hydrogen liquefier and to choose a helium-neon mixture as refrigerant, which allows the use the best available compression system. The preliminary design of the plant shows that a thermodynamic efficiency of the total plant in the order of 60% is feasible. This results in an overall power requirement of 5 to 7 kW-h per kg of liquid hydrogen, depending on the pressure of the feed and the temperature of the product. These values for the power consumption are recommended as bench marks for future studies on large scale hydrogen liquefaction.
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Quack et al. developed an ethane-propane Joule-Brayton pre-cooling Claude process using helium-neon as a refrigerant in the cryogenic module, and the system showed a specific energy consumption of 5-7 kWh_el/kg-H2.
“Quack et al. [102] developed an ethane-propane Joule-Brayton precooling Claude process using helium-neon as a refrigerant in the cryogenic module, and the system showed a specific energy consumption of 5 kWh el /kg-H 2 -7 kWh el /kg-H 2 .”
From 5917. https://doi.org/10.3390/en14185917. - (2021) · cites this paper as [102]
Using H2 as refrigerant has drawbacks including inability to decrease temperature below the H2 boiling point, high SEC of compressors, and high penetration in equipment due to low molecular mass and low system efficiency.
“Its application includes drawbacks such as the inability to decrease the temperature below the H2 boiling point, the high SEC of compressors, and high penetration in equipment structure due to low molecular mass and low system efficiency.165,194”
From Strategies To Improve the Performance of Hydrogen Storage Systems by Liquefaction Methods: A Comprehensive Review (2023) · cites this paper as [165]
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Cited by 121
- Authors
- Quack, H.
- Affiliations
- Technische Universität Dresden (DE)
- Corresponding author
- Quack, H.
- Venue
- AIP Conference Proceedings
- Publisher
- AIP
- Published
- 2002
- Volume
- 613
- Pages
- 255-263
- ISSN
- 0094-243X (ISSN-L)
- OpenAlex
- W1620037480
- Cited by
- 121
- References
- 0
- Citations by year
- 2026: 4 · 2025: 23 · 2024: 10 · 2023: 10 · 2022: 11 · 2021: 13 · 2020: 3 · 2019: 11 · 2018: 4 · 2017: 10 · 2016: 1 · 2015: 2 · 2014: 2 · 2013: 3 · 2012: 1
- FWCI
- 0.60
- Type
- conference paper
- Language
- en
- Open access
- closed
- Locations
- AIP conference proceedings (publishedVersion)
- Topics
- Physical Sciences › Engineering › Aerospace Engineering › Spacecraft and Cryogenic Technologies
- Physical Sciences › Engineering › Mechanical Engineering › Advanced Thermodynamic Systems and Engines
- Physical Sciences › Engineering › Mechanical Engineering › Thermodynamic and Exergetic Analyses of Power and Cooling Systems
- Keywords
- hydrogen liquefier, hydrogen liquefaction, exergy analysis, ortho-para conversion, helium refrigeration, expansion turbine, thermodynamic efficiency, power consumption, large-scale hydrogen production
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