Numerical modeling and investigation on the adsorption kinetics and thermal regulation effects of adsorbent coating for cryogenic storage
Cryogenic storage of liquefied natural gas (LNG) is exposed to environmental heat flux, highlighting the need for thermal regulation of LNG tanks to ensure storage safety and efficiency. Although cold insulation systems are equipped to mitigate heat leakage, auxiliary thermal management measures rem...
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Elsevier
2025-09-01
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| Series: | Case Studies in Thermal Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X25008937 |
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| author | Zhongdi Duan Shuo Feng Jianhu Wang Hongxiang Xue |
| author_facet | Zhongdi Duan Shuo Feng Jianhu Wang Hongxiang Xue |
| author_sort | Zhongdi Duan |
| collection | DOAJ |
| description | Cryogenic storage of liquefied natural gas (LNG) is exposed to environmental heat flux, highlighting the need for thermal regulation of LNG tanks to ensure storage safety and efficiency. Although cold insulation systems are equipped to mitigate heat leakage, auxiliary thermal management measures remain essential. This paper proposes a passive thermal regulation method for LNG tanks, which utilizes adsorbent coatings for thermal control by temperature swing desorption. A numerical model is developed to investigate the adsorption kinetics and thermal regulation effects of adsorbent coating on LNG thermodynamic responses. A coating sub-model is established by incorporating scalar equations of adsorption kinetics and thermal flux into the numerical model. The adsorption isotherms for boil-off gas under cryogenic conditions are established using D-A model based on fitting of cryogenic test data. Simulations indicate that the vapor temperature rise is suppressed by 21.3%, 55.4% and 85.4% when exposed to heat fluxes of 200 W/m2, 1,000 W/m2, and 10,000 W/m2, with a maximum heat adsorption ratio of 50.1%, 78.2%, and 90.1%, respectively. The adsorbent coating exhibits self-adaptive response to external heat flux, effectively suppressing temperature rise and pressure buildup, demonstrating its potential for passive thermal regulation under conventional cryogenic storage and emergency thermal invasion scenarios. |
| format | Article |
| id | doaj-art-bfc6322d16f949d2a69a7d7202191d22 |
| institution | DOAJ |
| issn | 2214-157X |
| language | English |
| publishDate | 2025-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj-art-bfc6322d16f949d2a69a7d7202191d222025-08-20T03:13:18ZengElsevierCase Studies in Thermal Engineering2214-157X2025-09-017310663310.1016/j.csite.2025.106633Numerical modeling and investigation on the adsorption kinetics and thermal regulation effects of adsorbent coating for cryogenic storageZhongdi Duan0Shuo Feng1Jianhu Wang2Hongxiang Xue3State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China; Key Laboratory of Marine Intelligent Equipment and System, Ministry of Education, Shanghai, 200240, China; School of Ocean & Civil Engineering, Shanghai Jiao Tong University, Shanghai, 200240, ChinaState Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China; Key Laboratory of Marine Intelligent Equipment and System, Ministry of Education, Shanghai, 200240, China; School of Ocean & Civil Engineering, Shanghai Jiao Tong University, Shanghai, 200240, ChinaState Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China; Key Laboratory of Marine Intelligent Equipment and System, Ministry of Education, Shanghai, 200240, China; School of Ocean & Civil Engineering, Shanghai Jiao Tong University, Shanghai, 200240, ChinaCorresponding author.; State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China; Key Laboratory of Marine Intelligent Equipment and System, Ministry of Education, Shanghai, 200240, China; School of Ocean & Civil Engineering, Shanghai Jiao Tong University, Shanghai, 200240, ChinaCryogenic storage of liquefied natural gas (LNG) is exposed to environmental heat flux, highlighting the need for thermal regulation of LNG tanks to ensure storage safety and efficiency. Although cold insulation systems are equipped to mitigate heat leakage, auxiliary thermal management measures remain essential. This paper proposes a passive thermal regulation method for LNG tanks, which utilizes adsorbent coatings for thermal control by temperature swing desorption. A numerical model is developed to investigate the adsorption kinetics and thermal regulation effects of adsorbent coating on LNG thermodynamic responses. A coating sub-model is established by incorporating scalar equations of adsorption kinetics and thermal flux into the numerical model. The adsorption isotherms for boil-off gas under cryogenic conditions are established using D-A model based on fitting of cryogenic test data. Simulations indicate that the vapor temperature rise is suppressed by 21.3%, 55.4% and 85.4% when exposed to heat fluxes of 200 W/m2, 1,000 W/m2, and 10,000 W/m2, with a maximum heat adsorption ratio of 50.1%, 78.2%, and 90.1%, respectively. The adsorbent coating exhibits self-adaptive response to external heat flux, effectively suppressing temperature rise and pressure buildup, demonstrating its potential for passive thermal regulation under conventional cryogenic storage and emergency thermal invasion scenarios.http://www.sciencedirect.com/science/article/pii/S2214157X25008937Liquefied natural gasThermodynamic responseTemperature swing desorptionCold preventionComputational fluid dynamics |
| spellingShingle | Zhongdi Duan Shuo Feng Jianhu Wang Hongxiang Xue Numerical modeling and investigation on the adsorption kinetics and thermal regulation effects of adsorbent coating for cryogenic storage Case Studies in Thermal Engineering Liquefied natural gas Thermodynamic response Temperature swing desorption Cold prevention Computational fluid dynamics |
| title | Numerical modeling and investigation on the adsorption kinetics and thermal regulation effects of adsorbent coating for cryogenic storage |
| title_full | Numerical modeling and investigation on the adsorption kinetics and thermal regulation effects of adsorbent coating for cryogenic storage |
| title_fullStr | Numerical modeling and investigation on the adsorption kinetics and thermal regulation effects of adsorbent coating for cryogenic storage |
| title_full_unstemmed | Numerical modeling and investigation on the adsorption kinetics and thermal regulation effects of adsorbent coating for cryogenic storage |
| title_short | Numerical modeling and investigation on the adsorption kinetics and thermal regulation effects of adsorbent coating for cryogenic storage |
| title_sort | numerical modeling and investigation on the adsorption kinetics and thermal regulation effects of adsorbent coating for cryogenic storage |
| topic | Liquefied natural gas Thermodynamic response Temperature swing desorption Cold prevention Computational fluid dynamics |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X25008937 |
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