Three‐Tier Hierarchical Structures for Extreme Pool Boiling Heat Transfer Performance
Abstract: 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.
- Standort
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Deutsche Nationalbibliothek Frankfurt am Main
- Umfang
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Online-Ressource
- Sprache
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Englisch
- Erschienen in
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Three‐Tier Hierarchical Structures for Extreme Pool Boiling Heat Transfer Performance ; day:12 ; month:07 ; year:2022 ; extent:6
Advanced materials ; (12.07.2022) (gesamt 6)
- Urheber
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Song, Youngsup
Díaz‐Marín, Carlos D.
Zhang, Lenan
Cha, Hyeongyun
Zhao, Yajing
Wang, Evelyn N.
- DOI
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10.1002/adma.202200899
- URN
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urn:nbn:de:101:1-2022071215172034440715
- Rechteinformation
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Letzte Aktualisierung
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15.08.2025, 07:33 MESZ
Datenpartner
Deutsche Nationalbibliothek. Bei Fragen zum Objekt wenden Sie sich bitte an den Datenpartner.
Beteiligte
- Song, Youngsup
- Díaz‐Marín, Carlos D.
- Zhang, Lenan
- Cha, Hyeongyun
- Zhao, Yajing
- Wang, Evelyn N.
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