Application of Fuel Cold Energy in CO2 Bog Reliquefaction System on Ammonia-Powered CO2 Carrier
A CO2 boiled off gas (CO2 BOG) reliquefaction system using liquid ammonia cold energy is designed to solve the problems of fuel cold energy waste and the large power consumption of the compressor in the process of CO2 BOG reliquefaction on an ammonia-powered CO2 carrier. Aspen HYSYS is used to simul...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Sciendo
2023-09-01
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| Series: | Polish Maritime Research |
| Subjects: | |
| Online Access: | https://doi.org/10.2478/pomr-2023-0036 |
| _version_ | 1797258269482287104 |
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| author | Lin Yiqun Lu Jie Li Boyang Li Yajing Yang Qingyong |
| author_facet | Lin Yiqun Lu Jie Li Boyang Li Yajing Yang Qingyong |
| author_sort | Lin Yiqun |
| collection | DOAJ |
| description | A CO2 boiled off gas (CO2 BOG) reliquefaction system using liquid ammonia cold energy is designed to solve the problems of fuel cold energy waste and the large power consumption of the compressor in the process of CO2 BOG reliquefaction on an ammonia-powered CO2 carrier. Aspen HYSYS is used to simulate the calculation, and it is found that the system has lower power consumption than the existing reliquefaction method. The temperature of the heat exchanger heater-1 heat flow outlet node (node C-4) is optimised, and it is found that, with the increase of the node C-4 temperature, the power consumption of the compressor gradually increases, and the liquefaction fraction of CO2 BOG gradually decreases. Under 85% conditions, when the ambient temperature is 0°C and the temperature of node C-4 is -9°C, the liquid fraction of CO2 BOG reaches the maximum, which is 74.46%, and the power of Compressor-1 is the minimum, which is 40.90 kW. According to this, the optimum temperature of node C-4 under various working conditions is determined. The exergy efficiency model is established, in an 85% ship working condition with the ambient temperature of 40°C, and the exergy efficiency of the system is the maximum, reaching 59.58%. Therefore, the CO2 BOG reliquefaction system proposed in this study could realise effective utilisation of liquid ammonia cold energy. |
| first_indexed | 2024-03-11T10:41:22Z |
| format | Article |
| id | doaj.art-09b1c083a9d24360bb5261edb67e9954 |
| institution | Directory Open Access Journal |
| issn | 2083-7429 |
| language | English |
| last_indexed | 2024-04-24T22:50:51Z |
| publishDate | 2023-09-01 |
| publisher | Sciendo |
| record_format | Article |
| series | Polish Maritime Research |
| spelling | doaj.art-09b1c083a9d24360bb5261edb67e99542024-03-18T10:29:29ZengSciendoPolish Maritime Research2083-74292023-09-01303223410.2478/pomr-2023-0036Application of Fuel Cold Energy in CO2 Bog Reliquefaction System on Ammonia-Powered CO2 CarrierLin Yiqun0Lu Jie1Li Boyang2Li Yajing3Yang Qingyong41College of Electromechanical Engineering, Qingdao University of Science and Technology, China1College of Electromechanical Engineering, Qingdao University of Science and Technology, China1College of Electromechanical Engineering, Qingdao University of Science and Technology, China1College of Electromechanical Engineering, Qingdao University of Science and Technology, China1College of Electromechanical Engineering, Qingdao University of Science and Technology, ChinaA CO2 boiled off gas (CO2 BOG) reliquefaction system using liquid ammonia cold energy is designed to solve the problems of fuel cold energy waste and the large power consumption of the compressor in the process of CO2 BOG reliquefaction on an ammonia-powered CO2 carrier. Aspen HYSYS is used to simulate the calculation, and it is found that the system has lower power consumption than the existing reliquefaction method. The temperature of the heat exchanger heater-1 heat flow outlet node (node C-4) is optimised, and it is found that, with the increase of the node C-4 temperature, the power consumption of the compressor gradually increases, and the liquefaction fraction of CO2 BOG gradually decreases. Under 85% conditions, when the ambient temperature is 0°C and the temperature of node C-4 is -9°C, the liquid fraction of CO2 BOG reaches the maximum, which is 74.46%, and the power of Compressor-1 is the minimum, which is 40.90 kW. According to this, the optimum temperature of node C-4 under various working conditions is determined. The exergy efficiency model is established, in an 85% ship working condition with the ambient temperature of 40°C, and the exergy efficiency of the system is the maximum, reaching 59.58%. Therefore, the CO2 BOG reliquefaction system proposed in this study could realise effective utilisation of liquid ammonia cold energy.https://doi.org/10.2478/pomr-2023-0036mmonia-powered co2 carrierliquid ammonia cold energyco2 bogreliquefaction systemaspen hysys |
| spellingShingle | Lin Yiqun Lu Jie Li Boyang Li Yajing Yang Qingyong Application of Fuel Cold Energy in CO2 Bog Reliquefaction System on Ammonia-Powered CO2 Carrier Polish Maritime Research mmonia-powered co2 carrier liquid ammonia cold energy co2 bog reliquefaction system aspen hysys |
| title | Application of Fuel Cold Energy in CO2 Bog Reliquefaction System on Ammonia-Powered CO2 Carrier |
| title_full | Application of Fuel Cold Energy in CO2 Bog Reliquefaction System on Ammonia-Powered CO2 Carrier |
| title_fullStr | Application of Fuel Cold Energy in CO2 Bog Reliquefaction System on Ammonia-Powered CO2 Carrier |
| title_full_unstemmed | Application of Fuel Cold Energy in CO2 Bog Reliquefaction System on Ammonia-Powered CO2 Carrier |
| title_short | Application of Fuel Cold Energy in CO2 Bog Reliquefaction System on Ammonia-Powered CO2 Carrier |
| title_sort | application of fuel cold energy in co2 bog reliquefaction system on ammonia powered co2 carrier |
| topic | mmonia-powered co2 carrier liquid ammonia cold energy co2 bog reliquefaction system aspen hysys |
| url | https://doi.org/10.2478/pomr-2023-0036 |
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