Critical heat flux enhancement in pool boiling through increased rewetting on nanopillar array surfaces

Abstract Boiling is a key heat transfer process for a variety of power generation and thermal management technologies. We show that nanopillar arrays fabricated on a substrate enhance both the critical heat flux (CHF) and the critical temperature at CHF of the substrate and thus, effectively increas...

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Autores principales:	Thien-Binh Nguyen, Dongdong Liu, Md Imrul Kayes, Baomin Wang, Nabeel Rashin, Paul W. Leu, Tuan Tran
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/cd8bdc661f0849a891c33b247c38309b
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spelling	oai:doaj.org-article:cd8bdc661f0849a891c33b247c38309b2021-12-02T15:07:49ZCritical heat flux enhancement in pool boiling through increased rewetting on nanopillar array surfaces10.1038/s41598-018-22693-z2045-2322https://doaj.org/article/cd8bdc661f0849a891c33b247c38309b2018-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-22693-zhttps://doaj.org/toc/2045-2322Abstract Boiling is a key heat transfer process for a variety of power generation and thermal management technologies. We show that nanopillar arrays fabricated on a substrate enhance both the critical heat flux (CHF) and the critical temperature at CHF of the substrate and thus, effectively increase the limit of boiling before the boiling crisis is triggered. We reveal that the enhancement in both the CHF and the critical temperature results from an intensified rewetting process which increases with the height of nanopillars. We develop a predictive model based on experimental measurements of rewetting velocity to predict the enhancement in CHF and critical temperature of the nanopillar substrates. This model is critical for understanding how to control boiling enhancement and designing various nanostructured surfaces into specific applications.Thien-Binh NguyenDongdong LiuMd Imrul KayesBaomin WangNabeel RashinPaul W. LeuTuan TranNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-9 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Thien-Binh Nguyen Dongdong Liu Md Imrul Kayes Baomin Wang Nabeel Rashin Paul W. Leu Tuan Tran Critical heat flux enhancement in pool boiling through increased rewetting on nanopillar array surfaces
description	Abstract Boiling is a key heat transfer process for a variety of power generation and thermal management technologies. We show that nanopillar arrays fabricated on a substrate enhance both the critical heat flux (CHF) and the critical temperature at CHF of the substrate and thus, effectively increase the limit of boiling before the boiling crisis is triggered. We reveal that the enhancement in both the CHF and the critical temperature results from an intensified rewetting process which increases with the height of nanopillars. We develop a predictive model based on experimental measurements of rewetting velocity to predict the enhancement in CHF and critical temperature of the nanopillar substrates. This model is critical for understanding how to control boiling enhancement and designing various nanostructured surfaces into specific applications.
format	article
author	Thien-Binh Nguyen Dongdong Liu Md Imrul Kayes Baomin Wang Nabeel Rashin Paul W. Leu Tuan Tran
author_facet	Thien-Binh Nguyen Dongdong Liu Md Imrul Kayes Baomin Wang Nabeel Rashin Paul W. Leu Tuan Tran
author_sort	Thien-Binh Nguyen
title	Critical heat flux enhancement in pool boiling through increased rewetting on nanopillar array surfaces
title_short	Critical heat flux enhancement in pool boiling through increased rewetting on nanopillar array surfaces
title_full	Critical heat flux enhancement in pool boiling through increased rewetting on nanopillar array surfaces
title_fullStr	Critical heat flux enhancement in pool boiling through increased rewetting on nanopillar array surfaces
title_full_unstemmed	Critical heat flux enhancement in pool boiling through increased rewetting on nanopillar array surfaces
title_sort	critical heat flux enhancement in pool boiling through increased rewetting on nanopillar array surfaces
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/cd8bdc661f0849a891c33b247c38309b
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Critical heat flux enhancement in pool boiling through increased rewetting on nanopillar array surfaces

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