| Issue |
E3S Web Conf.
Volume 518, 2024
9th International Conference on Energy Science and Applied Technology (ESAT 2024)
|
|
|---|---|---|
| Article Number | 01011 | |
| Number of page(s) | 5 | |
| DOI | https://doi.org/10.1051/e3sconf/202451801011 | |
| Published online | 17 April 2024 | |
Hydrogen Liquefaction Process with Mixed Refrigerant Pre-cooling
1 Guohua (Jiangsu) Wind Power Co., Ltd., Jiangsu, China
2 Aerospace Hydrogen Energy Technology Co., Ltd, Beijing, China
* Corresponding author: zlpbuaa@foxmail.com
A novel hydrogen liquefaction process based on precooled mixed refrigerant is proposed in this paper. The specific energy and the exergy loss are also analyzed. The feed gas with a temperature of 302K and a pressure of 2.012MPa is first precooled to 81K with mixed refrigerant. Three refrigerant cycles with hydrogen expanders and one with throttling valves are adopted to cool the gaseous hydrogen to 21K. The proportion of para-hydrogen of the product is 99%. The specific energy consumption of the process is 9.28 kW·h/kgLH2 and the exergy efficiency is 24.3%. Furthermore, the exergy analysis indicates that the exergy loss caused by heat exchangers, compressors and expanders weights the most.
© The Authors, published by EDP Sciences, 2024
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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