Transient boiling critical heat flux on horizontal vertically oriented ribbon heater with treated surface condition in pool of water

The deep understanding of transient pool boiling critical heat flux (CHF) phenomena with treated surface and its correlation in water at saturated and subcooled conditions are becoming increasingly important for the database for the further enhancement of the design of liquid cooling technologies. T...

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Autores principales:	Min Han HTET, Katsuya FUKUDA, Qiusheng LIU
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2016
Materias:	transient critical heat flux ribbon surface roughness contact angle treated surface Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/8640a79e469844a6a995e4669c85ecc6
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spelling	oai:doaj.org-article:8640a79e469844a6a995e4669c85ecc62021-11-26T06:51:30ZTransient boiling critical heat flux on horizontal vertically oriented ribbon heater with treated surface condition in pool of water2187-974510.1299/mej.15-00438https://doaj.org/article/8640a79e469844a6a995e4669c85ecc62016-01-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/3/3/3_15-00438/_pdf/-char/enhttps://doaj.org/toc/2187-9745The deep understanding of transient pool boiling critical heat flux (CHF) phenomena with treated surface and its correlation in water at saturated and subcooled conditions are becoming increasingly important for the database for the further enhancement of the design of liquid cooling technologies. Transient CHF using horizontal cylinders with different surfaces have been reported. However, there is a need to find the effect of surface wettability (contact angle) on transient CHF. This paper aims to study the steady and transient CHF due to exponentially increasing heat inputs, Q = Q0exp(t/τ) , using horizontal vertically oriented platinum ribbon in a pool of water with respect to pressure, subcooling, surface roughness and contact angle. The exponential period, τ, was varied from 5 ms to 10 s. We used three ribbon heaters with different surfaces, namely, commercial surface (CS), treated surface I (TS-I) polished by buff paper together with alumina, and treated surface II (TS-II) finished by emery paper. For the surface condition, surface roughness and contact angle of each ribbon were measured prior to pool boiling experiment. The acquired non-boiling heat transfer, steady and transient CHF were evaluated with existing corresponding equations. The steady-state CHFs measured on the TS-I were tested with the corresponding results of commercial surface. The three groups of transient CHF with different physical mechanisms, the enhancement of transient CHF in light of surface condition and transient CHF degradation depending on pressure and subcooling were reported.Min Han HTETKatsuya FUKUDAQiusheng LIUThe Japan Society of Mechanical Engineersarticletransient critical heat fluxribbonsurface roughnesscontact angletreated surfaceMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 3, Iss 3, Pp 15-00438-15-00438 (2016)
institution	DOAJ
collection	DOAJ
language	EN
topic	transient critical heat flux ribbon surface roughness contact angle treated surface Mechanical engineering and machinery TJ1-1570
spellingShingle	transient critical heat flux ribbon surface roughness contact angle treated surface Mechanical engineering and machinery TJ1-1570 Min Han HTET Katsuya FUKUDA Qiusheng LIU Transient boiling critical heat flux on horizontal vertically oriented ribbon heater with treated surface condition in pool of water
description	The deep understanding of transient pool boiling critical heat flux (CHF) phenomena with treated surface and its correlation in water at saturated and subcooled conditions are becoming increasingly important for the database for the further enhancement of the design of liquid cooling technologies. Transient CHF using horizontal cylinders with different surfaces have been reported. However, there is a need to find the effect of surface wettability (contact angle) on transient CHF. This paper aims to study the steady and transient CHF due to exponentially increasing heat inputs, Q = Q0exp(t/τ) , using horizontal vertically oriented platinum ribbon in a pool of water with respect to pressure, subcooling, surface roughness and contact angle. The exponential period, τ, was varied from 5 ms to 10 s. We used three ribbon heaters with different surfaces, namely, commercial surface (CS), treated surface I (TS-I) polished by buff paper together with alumina, and treated surface II (TS-II) finished by emery paper. For the surface condition, surface roughness and contact angle of each ribbon were measured prior to pool boiling experiment. The acquired non-boiling heat transfer, steady and transient CHF were evaluated with existing corresponding equations. The steady-state CHFs measured on the TS-I were tested with the corresponding results of commercial surface. The three groups of transient CHF with different physical mechanisms, the enhancement of transient CHF in light of surface condition and transient CHF degradation depending on pressure and subcooling were reported.
format	article
author	Min Han HTET Katsuya FUKUDA Qiusheng LIU
author_facet	Min Han HTET Katsuya FUKUDA Qiusheng LIU
author_sort	Min Han HTET
title	Transient boiling critical heat flux on horizontal vertically oriented ribbon heater with treated surface condition in pool of water
title_short	Transient boiling critical heat flux on horizontal vertically oriented ribbon heater with treated surface condition in pool of water
title_full	Transient boiling critical heat flux on horizontal vertically oriented ribbon heater with treated surface condition in pool of water
title_fullStr	Transient boiling critical heat flux on horizontal vertically oriented ribbon heater with treated surface condition in pool of water
title_full_unstemmed	Transient boiling critical heat flux on horizontal vertically oriented ribbon heater with treated surface condition in pool of water
title_sort	transient boiling critical heat flux on horizontal vertically oriented ribbon heater with treated surface condition in pool of water
publisher	The Japan Society of Mechanical Engineers
publishDate	2016
url	https://doaj.org/article/8640a79e469844a6a995e4669c85ecc6
work_keys_str_mv	AT minhanhtet transientboilingcriticalheatfluxonhorizontalverticallyorientedribbonheaterwithtreatedsurfaceconditioninpoolofwater AT katsuyafukuda transientboilingcriticalheatfluxonhorizontalverticallyorientedribbonheaterwithtreatedsurfaceconditioninpoolofwater AT qiushengliu transientboilingcriticalheatfluxonhorizontalverticallyorientedribbonheaterwithtreatedsurfaceconditioninpoolofwater
_version_	1718409730508980224

Transient boiling critical heat flux on horizontal vertically oriented ribbon heater with treated surface condition in pool of water

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