Nitrogen expander cycles for large capacity liquefaction of natural gas
- Authors
- Chang, H.-M.; Park, J.H.; Gwak, K.H.; Choe, K.H.
- Issue Date
- 2014
- Publisher
- American Institute of Physics Inc.
- Keywords
- Expander; Liquefaction; Lng; Mixed refrigerant; Nitrogen
- Citation
- AIP Conference Proceedings, v.1573, pp.1652 - 1657
- Journal Title
- AIP Conference Proceedings
- Volume
- 1573
- Start Page
- 1652
- End Page
- 1657
- URI
- https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/16385
- DOI
- 10.1063/1.4860905
- ISSN
- 0094-243X
- Abstract
- Thermodynamic study is performed on nitrogen expander cycles for large capacity liquefaction of natural gas. In order to substantially increase the capacity, a Brayton refrigeration cycle with nitrogen expander was recently added to the cold end of the reputable propane pre-cooled mixed-refrigerant (C3-MR) process. Similar modifications with a nitrogen expander cycle are extensively investigated on a variety of cycle configurations. The existing and modified cycles are simulated with commercial process software (Aspen HYSYS) based on selected specifications. The results are compared in terms of thermodynamic efficiency, liquefaction capacity, and estimated size of heat exchangers. The combination of C3-MR with partial regeneration and pre-cooling of nitrogen expander cycle is recommended to have a great potential for high efficiency and large capacity. ©2014 AIP Publishing LLC.
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Collections - College of Engineering > Department of Mechanical and System Design Engineering > 1. Journal Articles
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