Numerical simulation of ice plugging process using multi-jacket method in nuclear power pipes
Introduction: Ice plugs acts as isolate maintenance sections during pipeline repairs in nuclear power plants can effectively reduce maintenance costs, which is formed by the cooling of liquid nitrogen. The single-jacket freezing method takes a long time for the formation of ice plugs with a certain...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2024-01-01
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| Series: | Frontiers in Energy Research |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fenrg.2023.1323187/full |
| _version_ | 1797352579921870848 |
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| author | Wei Zhang Wei Zhang Ke Xu Ming-Lei Hu Hui-Jie Liang Hao Chen Li-Qun Wang Yong-Qiang Feng |
| author_facet | Wei Zhang Wei Zhang Ke Xu Ming-Lei Hu Hui-Jie Liang Hao Chen Li-Qun Wang Yong-Qiang Feng |
| author_sort | Wei Zhang |
| collection | DOAJ |
| description | Introduction: Ice plugs acts as isolate maintenance sections during pipeline repairs in nuclear power plants can effectively reduce maintenance costs, which is formed by the cooling of liquid nitrogen. The single-jacket freezing method takes a long time for the formation of ice plugs with a certain load-bearing capacity, increasing the liquid nitrogen consumption.Methods: In this study, a multiple-jacket method for the formation of ice plugs was proposed, and the numerical simulation using CFD (Computational Fluid Dynamics) was conducted. The effects of total jacket length and jacket number on freezing time and the consumption of liquid nitrogen were analyzed.Results and Discussion: Research indicated that the multiple-jacket method obtained a 11%∼15% decrease in freezing time and a 18%∼26% decrease in liquid nitrogen consumption than the single-jacket method. For the multiple-jacket method, the gap between the jackets presented a certain influence on the freezing time and liquid nitrogen consumption. As the gap between the jackets increases, there exist a small increase in the freezing time, but the liquid nitrogen consumption will be reduced by 2% to 5%. |
| first_indexed | 2024-03-08T13:18:54Z |
| format | Article |
| id | doaj.art-bf158949afbe4310b3e017879957f5e4 |
| institution | Directory Open Access Journal |
| issn | 2296-598X |
| language | English |
| last_indexed | 2024-03-08T13:18:54Z |
| publishDate | 2024-01-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Energy Research |
| spelling | doaj.art-bf158949afbe4310b3e017879957f5e42024-01-18T04:26:07ZengFrontiers Media S.A.Frontiers in Energy Research2296-598X2024-01-011110.3389/fenrg.2023.13231871323187Numerical simulation of ice plugging process using multi-jacket method in nuclear power pipesWei Zhang0Wei Zhang1Ke Xu2Ming-Lei Hu3Hui-Jie Liang4Hao Chen5Li-Qun Wang6Yong-Qiang Feng7China Nuclear Power Operation Management Co., Ltd., Hangzhou, ChinaUniversity of Science and Technology, Beijing, ChinaChina Nuclear Power Operation Management Co., Ltd., Hangzhou, ChinaChina Nuclear Power Operation Management Co., Ltd., Hangzhou, ChinaSchool of Energy and Power Engineering, Jiangsu University, Zhenjiang, Jiangsu, ChinaSchool of Energy and Power Engineering, Jiangsu University, Zhenjiang, Jiangsu, ChinaSchool of Energy and Power Engineering, Jiangsu University, Zhenjiang, Jiangsu, ChinaSchool of Energy and Power Engineering, Jiangsu University, Zhenjiang, Jiangsu, ChinaIntroduction: Ice plugs acts as isolate maintenance sections during pipeline repairs in nuclear power plants can effectively reduce maintenance costs, which is formed by the cooling of liquid nitrogen. The single-jacket freezing method takes a long time for the formation of ice plugs with a certain load-bearing capacity, increasing the liquid nitrogen consumption.Methods: In this study, a multiple-jacket method for the formation of ice plugs was proposed, and the numerical simulation using CFD (Computational Fluid Dynamics) was conducted. The effects of total jacket length and jacket number on freezing time and the consumption of liquid nitrogen were analyzed.Results and Discussion: Research indicated that the multiple-jacket method obtained a 11%∼15% decrease in freezing time and a 18%∼26% decrease in liquid nitrogen consumption than the single-jacket method. For the multiple-jacket method, the gap between the jackets presented a certain influence on the freezing time and liquid nitrogen consumption. As the gap between the jackets increases, there exist a small increase in the freezing time, but the liquid nitrogen consumption will be reduced by 2% to 5%.https://www.frontiersin.org/articles/10.3389/fenrg.2023.1323187/fullnuclear power pipelinesliquid nitrogenice plugsmulti-jacketsliquid nitrogen consumption |
| spellingShingle | Wei Zhang Wei Zhang Ke Xu Ming-Lei Hu Hui-Jie Liang Hao Chen Li-Qun Wang Yong-Qiang Feng Numerical simulation of ice plugging process using multi-jacket method in nuclear power pipes Frontiers in Energy Research nuclear power pipelines liquid nitrogen ice plugs multi-jackets liquid nitrogen consumption |
| title | Numerical simulation of ice plugging process using multi-jacket method in nuclear power pipes |
| title_full | Numerical simulation of ice plugging process using multi-jacket method in nuclear power pipes |
| title_fullStr | Numerical simulation of ice plugging process using multi-jacket method in nuclear power pipes |
| title_full_unstemmed | Numerical simulation of ice plugging process using multi-jacket method in nuclear power pipes |
| title_short | Numerical simulation of ice plugging process using multi-jacket method in nuclear power pipes |
| title_sort | numerical simulation of ice plugging process using multi jacket method in nuclear power pipes |
| topic | nuclear power pipelines liquid nitrogen ice plugs multi-jackets liquid nitrogen consumption |
| url | https://www.frontiersin.org/articles/10.3389/fenrg.2023.1323187/full |
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