The Performance of Low-Pressure Seawater as a CO<sub>2</sub> Solvent in Underwater Air-Independent Propulsion Systems
Air-independent propulsion systems have improved the performance and decreased the vulnerability of underwater weapon systems. Reforming systems, however, generates large amounts of water and CO<sub>2</sub>. The recovery or separation of CO<sub>2</sub>, a residual gas compone...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2020-01-01
|
| Series: | Journal of Marine Science and Engineering |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2077-1312/8/1/22 |
| _version_ | 1819161450902454272 |
|---|---|
| author | Eun-Young Park Jungho Choi |
| author_facet | Eun-Young Park Jungho Choi |
| author_sort | Eun-Young Park |
| collection | DOAJ |
| description | Air-independent propulsion systems have improved the performance and decreased the vulnerability of underwater weapon systems. Reforming systems, however, generates large amounts of water and CO<sub>2</sub>. The recovery or separation of CO<sub>2</sub>, a residual gas component generated in vessels, entails considerable cost and energy consumption. It is necessary to understand the characteristics of the interaction between CO<sub>2</sub> and seawater under the conditions experienced by underwater weapon systems to design and optimize a CO<sub>2</sub> treatment process for dissolving CO<sub>2</sub> in seawater. In this study, numerical analysis was conducted using the derived experimental concentration and MATLAB. The diffusion coefficient was derived as a function of temperature according to the CO<sub>2</sub> dissolution time. Experiments on CO<sub>2</sub> dissolution in seawater were conducted. The concentration of CO<sub>2</sub> according to the reaction pressure and experimental temperature was obtained. The diffusion coefficient between CO<sub>2</sub> and seawater was found to be 6.3 × 10<sup>−5</sup> cm<sup>2</sup>/s at 25 °C and 7.24 × 10<sup>−5</sup> cm<sup>2</sup>/s at 32 °C. CO<sub>2</sub> concentration could be estimated accurately under vessel operating conditions using the derived CO<sub>2</sub> diffusion coefficients. Optimal design of the residual gas treatment process will be possible using the derived seawater−CO<sub>2</sub> diffusion coefficients under the actual operating conditions experienced by underwater weapon systems. |
| first_indexed | 2024-12-22T17:12:33Z |
| format | Article |
| id | doaj.art-44ece751e9cc48c08f77f5c2a6e8a4b1 |
| institution | Directory Open Access Journal |
| issn | 2077-1312 |
| language | English |
| last_indexed | 2024-12-22T17:12:33Z |
| publishDate | 2020-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Marine Science and Engineering |
| spelling | doaj.art-44ece751e9cc48c08f77f5c2a6e8a4b12022-12-21T18:19:01ZengMDPI AGJournal of Marine Science and Engineering2077-13122020-01-01812210.3390/jmse8010022jmse8010022The Performance of Low-Pressure Seawater as a CO<sub>2</sub> Solvent in Underwater Air-Independent Propulsion SystemsEun-Young Park0Jungho Choi1Department of Naval Architecture and Offshore Engineering, Dong-A University, Busan 49315, KoreaDepartment of Naval Architecture and Offshore Engineering, Dong-A University, Busan 49315, KoreaAir-independent propulsion systems have improved the performance and decreased the vulnerability of underwater weapon systems. Reforming systems, however, generates large amounts of water and CO<sub>2</sub>. The recovery or separation of CO<sub>2</sub>, a residual gas component generated in vessels, entails considerable cost and energy consumption. It is necessary to understand the characteristics of the interaction between CO<sub>2</sub> and seawater under the conditions experienced by underwater weapon systems to design and optimize a CO<sub>2</sub> treatment process for dissolving CO<sub>2</sub> in seawater. In this study, numerical analysis was conducted using the derived experimental concentration and MATLAB. The diffusion coefficient was derived as a function of temperature according to the CO<sub>2</sub> dissolution time. Experiments on CO<sub>2</sub> dissolution in seawater were conducted. The concentration of CO<sub>2</sub> according to the reaction pressure and experimental temperature was obtained. The diffusion coefficient between CO<sub>2</sub> and seawater was found to be 6.3 × 10<sup>−5</sup> cm<sup>2</sup>/s at 25 °C and 7.24 × 10<sup>−5</sup> cm<sup>2</sup>/s at 32 °C. CO<sub>2</sub> concentration could be estimated accurately under vessel operating conditions using the derived CO<sub>2</sub> diffusion coefficients. Optimal design of the residual gas treatment process will be possible using the derived seawater−CO<sub>2</sub> diffusion coefficients under the actual operating conditions experienced by underwater weapon systems.https://www.mdpi.com/2077-1312/8/1/22carbon dioxideco<sub>2</sub> dissolutionunderwater weapon systemsdiffusiondiffusion coefficient |
| spellingShingle | Eun-Young Park Jungho Choi The Performance of Low-Pressure Seawater as a CO<sub>2</sub> Solvent in Underwater Air-Independent Propulsion Systems Journal of Marine Science and Engineering carbon dioxide co<sub>2</sub> dissolution underwater weapon systems diffusion diffusion coefficient |
| title | The Performance of Low-Pressure Seawater as a CO<sub>2</sub> Solvent in Underwater Air-Independent Propulsion Systems |
| title_full | The Performance of Low-Pressure Seawater as a CO<sub>2</sub> Solvent in Underwater Air-Independent Propulsion Systems |
| title_fullStr | The Performance of Low-Pressure Seawater as a CO<sub>2</sub> Solvent in Underwater Air-Independent Propulsion Systems |
| title_full_unstemmed | The Performance of Low-Pressure Seawater as a CO<sub>2</sub> Solvent in Underwater Air-Independent Propulsion Systems |
| title_short | The Performance of Low-Pressure Seawater as a CO<sub>2</sub> Solvent in Underwater Air-Independent Propulsion Systems |
| title_sort | performance of low pressure seawater as a co sub 2 sub solvent in underwater air independent propulsion systems |
| topic | carbon dioxide co<sub>2</sub> dissolution underwater weapon systems diffusion diffusion coefficient |
| url | https://www.mdpi.com/2077-1312/8/1/22 |
| work_keys_str_mv | AT eunyoungpark theperformanceoflowpressureseawaterasacosub2subsolventinunderwaterairindependentpropulsionsystems AT junghochoi theperformanceoflowpressureseawaterasacosub2subsolventinunderwaterairindependentpropulsionsystems AT eunyoungpark performanceoflowpressureseawaterasacosub2subsolventinunderwaterairindependentpropulsionsystems AT junghochoi performanceoflowpressureseawaterasacosub2subsolventinunderwaterairindependentpropulsionsystems |