Methods and systems for hydrogen liquefaction
US11391511B1 · kind B1 · utility
2Cited by
20References
30Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 10, 2021 |
| Grant date | Jul 19, 2022 |
| Priority date | — |
| Expiry date | Aug 10, 2041 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25J2290/62
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Systems and methods for liquefying a gaseous hydrogen that include a first refrigeration stage and a second refrigeration stage. The first refrigeration stage includes a first heat exchanger configured to flow a first refrigerant to pre-cool the gaseous hydrogen. The second refrigeration stage includes a second heat exchanger configured to flow a second refrigerant to liquefy and sub-cool the hydrogen. The second refrigerant is split into two streams that flow through two compressor-expanders and multiple passes through the second heat exchanger before being recombined to repeat the second refrigeration stage circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.