The effect of pulse heating on saturated boiling heat transfer in rough surfaces
The boiling heat transfer efficiency in smooth surface can no longer meet the high-power equipment heat dissipation requirements. By changing the surface roughness and pulse heating conditions, we can have higher boiling bubble nucleation point density to achieve higher heat transfer efficiency. How...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-02-01
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| Series: | Case Studies in Thermal Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X23000783 |
| _version_ | 1797936366183514112 |
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| author | Haoyang Li Zhunfeng Fan Qingzhi Lai Yinmo Xie Lanqing Qiao Jianyu Tan |
| author_facet | Haoyang Li Zhunfeng Fan Qingzhi Lai Yinmo Xie Lanqing Qiao Jianyu Tan |
| author_sort | Haoyang Li |
| collection | DOAJ |
| description | The boiling heat transfer efficiency in smooth surface can no longer meet the high-power equipment heat dissipation requirements. By changing the surface roughness and pulse heating conditions, we can have higher boiling bubble nucleation point density to achieve higher heat transfer efficiency. However, the influencing mechanism of the surface roughness and pulse heating conditions on boiling bubbles needs further study. In this paper, the effects of different cavities and pulse heating conditions on the boiling bubbles dynamics and the heat transfer enhancement are investigated by Lattice Boltzmann method (LBM). The results show that compared with constant heating, the nucleation sites of pulse heating are larger. As the pulse amplitude increase, the nucleation rate tends to be faster. The heat transfer curves of the most obvious difference in nucleation phenomenon under different heating conditions are also investigated. Compared with the constant heating at Tb<1.09Tc, the heat transfer coefficient (HTC) maximum increase being up to 30.54%. Under pulse heating, the increase of HTC decreases with the increase of superheat and eventually it is lower than that of constant heating. |
| first_indexed | 2024-04-10T18:28:39Z |
| format | Article |
| id | doaj.art-3ff892431b2a454b9ef379ab656a555d |
| institution | Directory Open Access Journal |
| issn | 2214-157X |
| language | English |
| last_indexed | 2024-04-10T18:28:39Z |
| publishDate | 2023-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj.art-3ff892431b2a454b9ef379ab656a555d2023-02-02T04:49:00ZengElsevierCase Studies in Thermal Engineering2214-157X2023-02-0142102772The effect of pulse heating on saturated boiling heat transfer in rough surfacesHaoyang Li0Zhunfeng Fan1Qingzhi Lai2Yinmo Xie3Lanqing Qiao4Jianyu Tan5School of New Energy, Harbin Institute of Technology, Weihai, 264209, China; School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, 150001, ChinaState Nuclear Power Demonstration Plant Co. Ltd., Rongcheng, 264312, ChinaSchool of New Energy, Harbin Institute of Technology, Weihai, 264209, China; School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, 150001, ChinaSchool of New Energy, Harbin Institute of Technology, Weihai, 264209, China; School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, 150001, ChinaSchool of New Energy, Harbin Institute of Technology, Weihai, 264209, China; School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, 150001, ChinaSchool of New Energy, Harbin Institute of Technology, Weihai, 264209, China; School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, 150001, China; Corresponding author. School of New Energy, Harbin Institute of Technology, Weihai, 264209, China.The boiling heat transfer efficiency in smooth surface can no longer meet the high-power equipment heat dissipation requirements. By changing the surface roughness and pulse heating conditions, we can have higher boiling bubble nucleation point density to achieve higher heat transfer efficiency. However, the influencing mechanism of the surface roughness and pulse heating conditions on boiling bubbles needs further study. In this paper, the effects of different cavities and pulse heating conditions on the boiling bubbles dynamics and the heat transfer enhancement are investigated by Lattice Boltzmann method (LBM). The results show that compared with constant heating, the nucleation sites of pulse heating are larger. As the pulse amplitude increase, the nucleation rate tends to be faster. The heat transfer curves of the most obvious difference in nucleation phenomenon under different heating conditions are also investigated. Compared with the constant heating at Tb<1.09Tc, the heat transfer coefficient (HTC) maximum increase being up to 30.54%. Under pulse heating, the increase of HTC decreases with the increase of superheat and eventually it is lower than that of constant heating.http://www.sciencedirect.com/science/article/pii/S2214157X23000783Boiling heat transferRough surfaceLBMPulse heating |
| spellingShingle | Haoyang Li Zhunfeng Fan Qingzhi Lai Yinmo Xie Lanqing Qiao Jianyu Tan The effect of pulse heating on saturated boiling heat transfer in rough surfaces Case Studies in Thermal Engineering Boiling heat transfer Rough surface LBM Pulse heating |
| title | The effect of pulse heating on saturated boiling heat transfer in rough surfaces |
| title_full | The effect of pulse heating on saturated boiling heat transfer in rough surfaces |
| title_fullStr | The effect of pulse heating on saturated boiling heat transfer in rough surfaces |
| title_full_unstemmed | The effect of pulse heating on saturated boiling heat transfer in rough surfaces |
| title_short | The effect of pulse heating on saturated boiling heat transfer in rough surfaces |
| title_sort | effect of pulse heating on saturated boiling heat transfer in rough surfaces |
| topic | Boiling heat transfer Rough surface LBM Pulse heating |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X23000783 |
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