Experimental Study on Pool Boiling on Hydrophilic Micro/Nanotextured Surfaces with Hydrophobic Patterns

Over the past decades, pool boiling on various wetting surfaces has been intensively investigated to enhance boiling heat transfer and critical heat flux. In this study, to enhance the two thermal performances simultaneously, we developed hydrophilic micro/nanotextured surfaces with hydrophobic patt...

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Autores principales:	Hak Rae Cho, Su Cheong Park, Doyeon Kim, Hyeong-min Joo, Dong In Yu
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	pool boiling critical heat flux heat transfer coefficient biphilic Technology T
Acceso en línea:	https://doaj.org/article/45b6bec485c74e69bcfa57cdad4015cb
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id	oai:doaj.org-article:45b6bec485c74e69bcfa57cdad4015cb
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spelling	oai:doaj.org-article:45b6bec485c74e69bcfa57cdad4015cb2021-11-25T17:26:28ZExperimental Study on Pool Boiling on Hydrophilic Micro/Nanotextured Surfaces with Hydrophobic Patterns10.3390/en142275431996-1073https://doaj.org/article/45b6bec485c74e69bcfa57cdad4015cb2021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1073/14/22/7543https://doaj.org/toc/1996-1073Over the past decades, pool boiling on various wetting surfaces has been intensively investigated to enhance boiling heat transfer and critical heat flux. In this study, to enhance the two thermal performances simultaneously, we developed hydrophilic micro/nanotextured surfaces with hydrophobic patterns. Using a silicon substrate, well-arrayed microtextures and randomly arrayed nanotextures were fabricated hierarchically using micro/nanoelectromechanical system processes. The top of the microtextures was coated locally with hydrophobic characteristics using specific self-assembled monolayer coating methods. Based on experimental data, we postulate that the critical heat flux was enhanced by the capillary-induced flow between microtextures and that nanotextures with superhydrophilicity contribute to the delay of the critical heat flux by better wetting the dried area. Owing to the hydrophobicity at the top of the micropillars, the nucleate site density and boiling heat transfer increased.Hak Rae ChoSu Cheong ParkDoyeon KimHyeong-min JooDong In YuMDPI AGarticlepool boilingcritical heat fluxheat transfer coefficientbiphilicTechnologyTENEnergies, Vol 14, Iss 7543, p 7543 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	pool boiling critical heat flux heat transfer coefficient biphilic Technology T
spellingShingle	pool boiling critical heat flux heat transfer coefficient biphilic Technology T Hak Rae Cho Su Cheong Park Doyeon Kim Hyeong-min Joo Dong In Yu Experimental Study on Pool Boiling on Hydrophilic Micro/Nanotextured Surfaces with Hydrophobic Patterns
description	Over the past decades, pool boiling on various wetting surfaces has been intensively investigated to enhance boiling heat transfer and critical heat flux. In this study, to enhance the two thermal performances simultaneously, we developed hydrophilic micro/nanotextured surfaces with hydrophobic patterns. Using a silicon substrate, well-arrayed microtextures and randomly arrayed nanotextures were fabricated hierarchically using micro/nanoelectromechanical system processes. The top of the microtextures was coated locally with hydrophobic characteristics using specific self-assembled monolayer coating methods. Based on experimental data, we postulate that the critical heat flux was enhanced by the capillary-induced flow between microtextures and that nanotextures with superhydrophilicity contribute to the delay of the critical heat flux by better wetting the dried area. Owing to the hydrophobicity at the top of the micropillars, the nucleate site density and boiling heat transfer increased.
format	article
author	Hak Rae Cho Su Cheong Park Doyeon Kim Hyeong-min Joo Dong In Yu
author_facet	Hak Rae Cho Su Cheong Park Doyeon Kim Hyeong-min Joo Dong In Yu
author_sort	Hak Rae Cho
title	Experimental Study on Pool Boiling on Hydrophilic Micro/Nanotextured Surfaces with Hydrophobic Patterns
title_short	Experimental Study on Pool Boiling on Hydrophilic Micro/Nanotextured Surfaces with Hydrophobic Patterns
title_full	Experimental Study on Pool Boiling on Hydrophilic Micro/Nanotextured Surfaces with Hydrophobic Patterns
title_fullStr	Experimental Study on Pool Boiling on Hydrophilic Micro/Nanotextured Surfaces with Hydrophobic Patterns
title_full_unstemmed	Experimental Study on Pool Boiling on Hydrophilic Micro/Nanotextured Surfaces with Hydrophobic Patterns
title_sort	experimental study on pool boiling on hydrophilic micro/nanotextured surfaces with hydrophobic patterns
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/45b6bec485c74e69bcfa57cdad4015cb
work_keys_str_mv	AT hakraecho experimentalstudyonpoolboilingonhydrophilicmicronanotexturedsurfaceswithhydrophobicpatterns AT sucheongpark experimentalstudyonpoolboilingonhydrophilicmicronanotexturedsurfaceswithhydrophobicpatterns AT doyeonkim experimentalstudyonpoolboilingonhydrophilicmicronanotexturedsurfaceswithhydrophobicpatterns AT hyeongminjoo experimentalstudyonpoolboilingonhydrophilicmicronanotexturedsurfaceswithhydrophobicpatterns AT donginyu experimentalstudyonpoolboilingonhydrophilicmicronanotexturedsurfaceswithhydrophobicpatterns
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Experimental Study on Pool Boiling on Hydrophilic Micro/Nanotextured Surfaces with Hydrophobic Patterns

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