Experimental study on heat transfer characteristics of steam underwater direct-contact condensation
Introduction: The direct-contact condensation (DCC) of steam under water injection is the basic thermodynamic process of the bubble deaerator. In order to understand the complex coupling behavior of strong turbulence and fast phase-change heat transfer involved in the process.Methods: This study use...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2023-01-01
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| Series: | Frontiers in Thermal Engineering |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fther.2022.1030998/full |
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| author | Chen Qian Li Hui Li Dongyang Wen Jiming Li Yong Xiao Qi Tan Sichao |
| author_facet | Chen Qian Li Hui Li Dongyang Wen Jiming Li Yong Xiao Qi Tan Sichao |
| author_sort | Chen Qian |
| collection | DOAJ |
| description | Introduction: The direct-contact condensation (DCC) of steam under water injection is the basic thermodynamic process of the bubble deaerator. In order to understand the complex coupling behavior of strong turbulence and fast phase-change heat transfer involved in the process.Methods: This study uses a visualized method and convective heat transfer model.Results: Since the contact area is affected by steam injection flow and sub-cooled degree is affected simultaneously, the trend of the condensation heat-transfer coefficient depends on the degree of their respective effects under each condition, and the maximum variation of the coefficient exceeds 104 W/m2.°C. Moreover, they still effect the period of steam plume, and the maximum variation of the period was beyond 80 ms.Discussion: Calculated the average condensation heat transfer coefficient and then produces the variation law of heat transfer coefficient under various conditions in one steam plume evolution period. |
| format | Article |
| id | doaj-art-1a3c743a5f6c40c69cea6e6a83c08942 |
| institution | Kabale University |
| issn | 2813-0456 |
| language | English |
| publishDate | 2023-01-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Thermal Engineering |
| spelling | doaj-art-1a3c743a5f6c40c69cea6e6a83c089422024-11-11T16:29:35ZengFrontiers Media S.A.Frontiers in Thermal Engineering2813-04562023-01-01210.3389/fther.2022.10309981030998Experimental study on heat transfer characteristics of steam underwater direct-contact condensationChen Qian0Li Hui1Li Dongyang2Wen Jiming3Li Yong4Xiao Qi5Tan Sichao6Heilongjiang Provincial Key Laboratory of Nuclear Power System and Equipment, Harbin Engineering University, Harbin, ChinaHeilongjiang Provincial Key Laboratory of Nuclear Power System and Equipment, Harbin Engineering University, Harbin, ChinaHeilongjiang Provincial Key Laboratory of Nuclear Power System and Equipment, Harbin Engineering University, Harbin, ChinaHeilongjiang Provincial Key Laboratory of Nuclear Power System and Equipment, Harbin Engineering University, Harbin, ChinaScience and Technology on Thermal Energy and Power Laboratory, Wuhan Second Ship Design and Research Institute, Wuhan, ChinaScience and Technology on Thermal Energy and Power Laboratory, Wuhan Second Ship Design and Research Institute, Wuhan, ChinaHeilongjiang Provincial Key Laboratory of Nuclear Power System and Equipment, Harbin Engineering University, Harbin, ChinaIntroduction: The direct-contact condensation (DCC) of steam under water injection is the basic thermodynamic process of the bubble deaerator. In order to understand the complex coupling behavior of strong turbulence and fast phase-change heat transfer involved in the process.Methods: This study uses a visualized method and convective heat transfer model.Results: Since the contact area is affected by steam injection flow and sub-cooled degree is affected simultaneously, the trend of the condensation heat-transfer coefficient depends on the degree of their respective effects under each condition, and the maximum variation of the coefficient exceeds 104 W/m2.°C. Moreover, they still effect the period of steam plume, and the maximum variation of the period was beyond 80 ms.Discussion: Calculated the average condensation heat transfer coefficient and then produces the variation law of heat transfer coefficient under various conditions in one steam plume evolution period.https://www.frontiersin.org/articles/10.3389/fther.2022.1030998/fulldirect-contact condensationlow-sub-cooled flow fieldscondensation heat transfer coefficienttwo-phase flowplume visualization |
| spellingShingle | Chen Qian Li Hui Li Dongyang Wen Jiming Li Yong Xiao Qi Tan Sichao Experimental study on heat transfer characteristics of steam underwater direct-contact condensation Frontiers in Thermal Engineering direct-contact condensation low-sub-cooled flow fields condensation heat transfer coefficient two-phase flow plume visualization |
| title | Experimental study on heat transfer characteristics of steam underwater direct-contact condensation |
| title_full | Experimental study on heat transfer characteristics of steam underwater direct-contact condensation |
| title_fullStr | Experimental study on heat transfer characteristics of steam underwater direct-contact condensation |
| title_full_unstemmed | Experimental study on heat transfer characteristics of steam underwater direct-contact condensation |
| title_short | Experimental study on heat transfer characteristics of steam underwater direct-contact condensation |
| title_sort | experimental study on heat transfer characteristics of steam underwater direct contact condensation |
| topic | direct-contact condensation low-sub-cooled flow fields condensation heat transfer coefficient two-phase flow plume visualization |
| url | https://www.frontiersin.org/articles/10.3389/fther.2022.1030998/full |
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