Entropy Analysis of Temperature Swing Adsorption for CO2 Capture Using the Computational Fluid Dynamics (CFD) Method
Carbon capture by adsorption is supposed to be an effective method to reduce CO2 emissions, among which Temperature Swing Adsorption (TSA) can utilize low-grade thermal energy even from renewable energy source. At present, TSA technology still has several challenges to be practical application, such...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-03-01
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| Series: | Entropy |
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| Online Access: | http://www.mdpi.com/1099-4300/21/3/285 |
| _version_ | 1828120155601764352 |
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| author | Zhihao Guo Shuai Deng Shuangjun Li Yahui Lian Li Zhao Xiangzhou Yuan |
| author_facet | Zhihao Guo Shuai Deng Shuangjun Li Yahui Lian Li Zhao Xiangzhou Yuan |
| author_sort | Zhihao Guo |
| collection | DOAJ |
| description | Carbon capture by adsorption is supposed to be an effective method to reduce CO2 emissions, among which Temperature Swing Adsorption (TSA) can utilize low-grade thermal energy even from renewable energy source. At present, TSA technology still has several challenges to be practical application, such as intensive energy-consumption and low energy-efficiency. Thermodynamics could be a powerful method to explore the energy conversion mechanism of TSA, among which entropy analysis could further provide a clear picture on the irreversible loss, even with a possible strategy of energy-efficient improvement. Based on the theory of non-equilibrium thermodynamics, the entropy analysis of TSA cycle is conducted, using the Computational Fluid Dynamics (CFD) method. The physical model and conservation equations are established and calculation methods for entropy generation are presented as well. The entropy generation of each process in cycle is analyzed, and the influence from the main parameters of desorption process is presented with optimization analysis. Finally, the performance of the cycle with regeneration is compared with that of the cycle without regeneration, and the method of reducing the entropy generation is obtained as well. This paper provides possible directions of performance improvement of TSA cycle with regards on energy utilization efficiency and the reduction of irreversible loss. |
| first_indexed | 2024-04-11T13:59:39Z |
| format | Article |
| id | doaj.art-c0bf3e8d06b2451db41463ffe6075f14 |
| institution | Directory Open Access Journal |
| issn | 1099-4300 |
| language | English |
| last_indexed | 2024-04-11T13:59:39Z |
| publishDate | 2019-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Entropy |
| spelling | doaj.art-c0bf3e8d06b2451db41463ffe6075f142022-12-22T04:20:09ZengMDPI AGEntropy1099-43002019-03-0121328510.3390/e21030285e21030285Entropy Analysis of Temperature Swing Adsorption for CO2 Capture Using the Computational Fluid Dynamics (CFD) MethodZhihao Guo0Shuai Deng1Shuangjun Li2Yahui Lian3Li Zhao4Xiangzhou Yuan5Key Laboratory of Efficient Utilization of Low and Medium Grade Energy (Tianjin University), Ministry of Education of China, Tianjin 300350, ChinaKey Laboratory of Efficient Utilization of Low and Medium Grade Energy (Tianjin University), Ministry of Education of China, Tianjin 300350, ChinaKey Laboratory of Efficient Utilization of Low and Medium Grade Energy (Tianjin University), Ministry of Education of China, Tianjin 300350, ChinaKey Laboratory of Efficient Utilization of Low and Medium Grade Energy (Tianjin University), Ministry of Education of China, Tianjin 300350, ChinaKey Laboratory of Efficient Utilization of Low and Medium Grade Energy (Tianjin University), Ministry of Education of China, Tianjin 300350, ChinaDepartment of Chemical and Biological Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, KoreaCarbon capture by adsorption is supposed to be an effective method to reduce CO2 emissions, among which Temperature Swing Adsorption (TSA) can utilize low-grade thermal energy even from renewable energy source. At present, TSA technology still has several challenges to be practical application, such as intensive energy-consumption and low energy-efficiency. Thermodynamics could be a powerful method to explore the energy conversion mechanism of TSA, among which entropy analysis could further provide a clear picture on the irreversible loss, even with a possible strategy of energy-efficient improvement. Based on the theory of non-equilibrium thermodynamics, the entropy analysis of TSA cycle is conducted, using the Computational Fluid Dynamics (CFD) method. The physical model and conservation equations are established and calculation methods for entropy generation are presented as well. The entropy generation of each process in cycle is analyzed, and the influence from the main parameters of desorption process is presented with optimization analysis. Finally, the performance of the cycle with regeneration is compared with that of the cycle without regeneration, and the method of reducing the entropy generation is obtained as well. This paper provides possible directions of performance improvement of TSA cycle with regards on energy utilization efficiency and the reduction of irreversible loss.http://www.mdpi.com/1099-4300/21/3/285carbon capturetemperature swing adsorptionCFDentropy generationheat regenerationnon-equilibrium thermodynamic |
| spellingShingle | Zhihao Guo Shuai Deng Shuangjun Li Yahui Lian Li Zhao Xiangzhou Yuan Entropy Analysis of Temperature Swing Adsorption for CO2 Capture Using the Computational Fluid Dynamics (CFD) Method Entropy carbon capture temperature swing adsorption CFD entropy generation heat regeneration non-equilibrium thermodynamic |
| title | Entropy Analysis of Temperature Swing Adsorption for CO2 Capture Using the Computational Fluid Dynamics (CFD) Method |
| title_full | Entropy Analysis of Temperature Swing Adsorption for CO2 Capture Using the Computational Fluid Dynamics (CFD) Method |
| title_fullStr | Entropy Analysis of Temperature Swing Adsorption for CO2 Capture Using the Computational Fluid Dynamics (CFD) Method |
| title_full_unstemmed | Entropy Analysis of Temperature Swing Adsorption for CO2 Capture Using the Computational Fluid Dynamics (CFD) Method |
| title_short | Entropy Analysis of Temperature Swing Adsorption for CO2 Capture Using the Computational Fluid Dynamics (CFD) Method |
| title_sort | entropy analysis of temperature swing adsorption for co2 capture using the computational fluid dynamics cfd method |
| topic | carbon capture temperature swing adsorption CFD entropy generation heat regeneration non-equilibrium thermodynamic |
| url | http://www.mdpi.com/1099-4300/21/3/285 |
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