Helium refrigeration system for hydrogen liquefaction applications
Open accessAbstract
Liquid hydrogen around 20 K is used as cold moderator for generating "cold neutron beam" in nuclear research reactors. A cryogenic helium refrigeration system is the core upon which such hydrogen liquefaction applications are built. A thermodynamic process based on reversed Brayton cycle with two stage expansion using high speed cryogenic turboexpanders (TEX) along with a pair of compact high effectiveness process heat exchangers (HX), is well suited for such applications. An existing helium refrigeration system, which had earlier demonstrated a refrigeration capacity of 470 W at around 20 K, is modified based on past operational experiences and newer application requirements. Modifications include addition of a new heat exchanger to simulate cryogenic process load and two other heat exchangers for controlling the temperatures of helium streams leading out to the application system. To incorporate these changes, cryogenic piping inside the cold box is suitably modified. This paper presents process simulation, sizing of new heat exchangers as well as fabrication aspects of the modified cryogenic process piping.
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In a Brayton refrigeration system, helium is cooled down to a temperature lower than the hydrogen temperature.
“Helium-primarily used as a refrigerant, not as a liquefier-is cooled down to a temperature lower than the hydrogen temperature [72].”
From 5917. https://doi.org/10.3390/en14185917. - (2021) · cites this paper as [72]
The magnetocaloric effect can produce a low temperature of heat.
“Therefore, a low temperature of heat can be produced owing to this magnetocaloric effect [72].”
From 5917. https://doi.org/10.3390/en14185917. - (2021) · cites this paper as [72]
Sections 2 and 4.1 describe low-temperature cooling by a reverse-Brayton-cycle helium refrigerator, not by a magnetocaloric effect. Searches for “magnetocaloric effect” and “magnetic refrigeration” found no passage in our copy addressing that mechanism, so the attributed claim cannot be verified from this source. (LLM, conf=0.76)
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Research works printed but not linked: 5
- [1][1] Lopez RA and Gilbertb EP Neutron scattering: a natural tool for food science and technology research Trends in food Sci. and Technol 2009 Vol 20 (11) pp 576-86.
- [2][2] Axmann A, Böning K and Rottmann M FRM-II: The new German researchreactor Nuclear Engineering and Design 1997 Vol 178 (1) pp 127-33.
- [3][3] Singh T, ChakravartyA, Rajendran S, Goyal M, AnsariNA and Prasad P 2005 Development of helium liquefaction/refrigeration system at BARC Indian journal of cryogenics Special Issue Vol 1 pp 53-58.
- [4][4] Chakravarty A and Singh T 2011 High speed miniature cryogenic turboexpander impellers at BARC Indian journal of cryogenics Vol 36 No 1-4 pp 1-9.
- [6][6] The American society of mechanical engineersASME code for process piping B31 Process piping 2006 ASME B31.3.7 ICECICMC IOP Publishing IOP Conf.Series: Materials Science and Engineering 171 (2017) 012029 doi:10.1088/1757-899X/171/1/012029 Table: 1 Table 1 . Input performance parameters Table: 3 Table 3 . Physical parameters of the simulator HX.
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(2021) · doi:10.3390/en14185917 · Cited by 708 · see citing works
A novel hydrogen liquefaction process configuration with combined mixed refrigerant systems
Asadnia, M., & Mehrpooya, M. (2017) · International Journal of Hydrogen Energy · doi:10.1016/j.ijhydene.2017.04.260 · Cited by 207 · see citing works
Aasadnia, M., & Mehrpooya, M. (2018) · Journal of Cleaner Production · doi:10.1016/j.jclepro.2018.09.001 · Cited by 95 · see citing works
- Authors
- Kumar, J., Nair, Sr., Menon, R., Goyal, M., Ansari, N., Chakravarty, A., & Joemon, V
- Affiliations
- Bhabha Atomic Research Centre (IN)
- Venue
- IOP Conference Series: Materials Science and Engineering
- Publisher
- IOP Publishing
- Published
- 2017-02
- Volume
- 171
- Pages
- 012029
- ISSN
- 1757-8981 (ISSN-L)
- 1757-899X
- OpenAlex
- W2592992915
- Cited by
- 8
- References
- 0
- Citations by year
- 2025: 1 · 2023: 1 · 2022: 1 · 2021: 1 · 2019: 2 · 2018: 1 · 2017: 1
- FWCI
- 1.92
- Type
- conference paper
- Language
- en
- Open access
- diamond
- doi.org
- Licence
- Locations
- IOP Conference Series Materials Science and Engineering (publishedVersion, cc-by)
- Topics
- Physical Sciences › Engineering › Aerospace Engineering › Spacecraft and Cryogenic Technologies
- Physical Sciences › Engineering › Mechanical Engineering › Advanced Thermodynamic Systems and Engines
- Physical Sciences › Engineering › Biomedical Engineering › Superconducting Materials and Applications
- Keywords
- helium refrigeration system, hydrogen liquefaction, two-stage expansion, process heat exchangers, cold neutron beam, liquid hydrogen moderator, cryogenic piping, cold box, heat exchanger sizing
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