Three‐Tier Hierarchical Structures for Extreme Pool Boiling Heat Transfer Performance
Boiling is an effective energy-transfer process with substantial utility in energy applications. Boiling performance is described mainly by the heat-transfer coefficient (HTC) and critical heat flux (CHF). Recent efforts for the simultaneous enhancement of HTC and CHF have been limited by an intrins...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2022
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| Online Access: | https://hdl.handle.net/1721.1/145704 |
| _version_ | 1811088522857152512 |
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| author | Song, Youngsup Díaz‐Marín, Carlos D Zhang, Lenan Cha, Hyeongyun Zhao, Yajing Wang, Evelyn N |
| author2 | Massachusetts Institute of Technology. Department of Mechanical Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Mechanical Engineering Song, Youngsup Díaz‐Marín, Carlos D Zhang, Lenan Cha, Hyeongyun Zhao, Yajing Wang, Evelyn N |
| author_sort | Song, Youngsup |
| collection | MIT |
| description | Boiling is an effective energy-transfer process with substantial utility in energy applications. Boiling performance is described mainly by the heat-transfer coefficient (HTC) and critical heat flux (CHF). Recent efforts for the simultaneous enhancement of HTC and CHF have been limited by an intrinsic trade-off between them-HTC enhancement requires high nucleation-site density, which can increase bubble coalescence resulting in limited CHF enhancement. In this work, this trade-off is overcome by designing three-tier hierarchical structures. The bubble coalescence is minimized to enhance the CHF by defining nucleation sites with microcavities interspersed within hemi-wicking structures. Meanwhile, the reduced nucleation-site density is compensated for by incorporating nanostructures that promote evaporation for HTC enhancement. The hierarchical structures demonstrate the simultaneous enhancement of HTC and CHF up to 389% and 138%, respectively, compared to a smooth surface. This extreme boiling performance can lead to significant energy savings in a variety of boiling applications. |
| first_indexed | 2024-09-23T14:03:29Z |
| format | Article |
| id | mit-1721.1/145704 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T14:03:29Z |
| publishDate | 2022 |
| publisher | Wiley |
| record_format | dspace |
| spelling | mit-1721.1/1457042022-10-07T03:17:46Z Three‐Tier Hierarchical Structures for Extreme Pool Boiling Heat Transfer Performance Song, Youngsup Díaz‐Marín, Carlos D Zhang, Lenan Cha, Hyeongyun Zhao, Yajing Wang, Evelyn N Massachusetts Institute of Technology. Department of Mechanical Engineering Boiling is an effective energy-transfer process with substantial utility in energy applications. Boiling performance is described mainly by the heat-transfer coefficient (HTC) and critical heat flux (CHF). Recent efforts for the simultaneous enhancement of HTC and CHF have been limited by an intrinsic trade-off between them-HTC enhancement requires high nucleation-site density, which can increase bubble coalescence resulting in limited CHF enhancement. In this work, this trade-off is overcome by designing three-tier hierarchical structures. The bubble coalescence is minimized to enhance the CHF by defining nucleation sites with microcavities interspersed within hemi-wicking structures. Meanwhile, the reduced nucleation-site density is compensated for by incorporating nanostructures that promote evaporation for HTC enhancement. The hierarchical structures demonstrate the simultaneous enhancement of HTC and CHF up to 389% and 138%, respectively, compared to a smooth surface. This extreme boiling performance can lead to significant energy savings in a variety of boiling applications. 2022-10-06T14:01:23Z 2022-10-06T14:01:23Z 2022-08 2022-10-06T13:53:16Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/145704 Song, Youngsup, Díaz‐Marín, Carlos D, Zhang, Lenan, Cha, Hyeongyun, Zhao, Yajing et al. 2022. "Three‐Tier Hierarchical Structures for Extreme Pool Boiling Heat Transfer Performance." Advanced Materials, 34 (32). en 10.1002/adma.202200899 Advanced Materials Creative Commons Attribution 4.0 International license https://creativecommons.org/licenses/by/4.0/ application/pdf Wiley Wiley |
| spellingShingle | Song, Youngsup Díaz‐Marín, Carlos D Zhang, Lenan Cha, Hyeongyun Zhao, Yajing Wang, Evelyn N Three‐Tier Hierarchical Structures for Extreme Pool Boiling Heat Transfer Performance |
| title | Three‐Tier Hierarchical Structures for Extreme Pool Boiling Heat Transfer Performance |
| title_full | Three‐Tier Hierarchical Structures for Extreme Pool Boiling Heat Transfer Performance |
| title_fullStr | Three‐Tier Hierarchical Structures for Extreme Pool Boiling Heat Transfer Performance |
| title_full_unstemmed | Three‐Tier Hierarchical Structures for Extreme Pool Boiling Heat Transfer Performance |
| title_short | Three‐Tier Hierarchical Structures for Extreme Pool Boiling Heat Transfer Performance |
| title_sort | three tier hierarchical structures for extreme pool boiling heat transfer performance |
| url | https://hdl.handle.net/1721.1/145704 |
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