Boiling of FC-72 on Surfaces with Open Copper Microchannel

The paper presents the results of experimental research on pool boiling heat transfer of dielectric liquid FC-72. Measurements were made at atmospheric pressure on open surfaces with microchannels. Heat transfer surfaces, in the form of parallel milled microchannels, were made of copper. The rectang...

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Autores principales:	Robert Kaniowski, Robert Pastuszko
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	pool boiling microchannel heat transfer coefficient narrow gap Technology T
Acceso en línea:	https://doaj.org/article/0023985a60cc4842b92441a603fd5251
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spelling	oai:doaj.org-article:0023985a60cc4842b92441a603fd52512021-11-11T16:01:47ZBoiling of FC-72 on Surfaces with Open Copper Microchannel10.3390/en142172831996-1073https://doaj.org/article/0023985a60cc4842b92441a603fd52512021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1073/14/21/7283https://doaj.org/toc/1996-1073The paper presents the results of experimental research on pool boiling heat transfer of dielectric liquid FC-72. Measurements were made at atmospheric pressure on open surfaces with microchannels. Heat transfer surfaces, in the form of parallel milled microchannels, were made of copper. The rectangular cross-sectional microchannels were 0.2 to 0.5 mm deep and 0.2 to 0.4 mm wide. The surfaces, compared to a smooth flat surface, provided a five-fold increase in the heat transfer coefficient and a two-fold increase in the critical heat flux. The article analyses the influence of the width and height of the microchannel on the heat transfer process. The maximum heat flux was 271.7 kW/m<sup>2</sup>, and the highest heat transfer coefficient obtained was 25 kW/m<sup>2</sup>K. Furthermore, the experimental results were compared with selected correlations for the nucleate pool boiling.Robert KaniowskiRobert PastuszkoMDPI AGarticlepool boilingmicrochannelheat transfer coefficientnarrow gapTechnologyTENEnergies, Vol 14, Iss 7283, p 7283 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	pool boiling microchannel heat transfer coefficient narrow gap Technology T
spellingShingle	pool boiling microchannel heat transfer coefficient narrow gap Technology T Robert Kaniowski Robert Pastuszko Boiling of FC-72 on Surfaces with Open Copper Microchannel
description	The paper presents the results of experimental research on pool boiling heat transfer of dielectric liquid FC-72. Measurements were made at atmospheric pressure on open surfaces with microchannels. Heat transfer surfaces, in the form of parallel milled microchannels, were made of copper. The rectangular cross-sectional microchannels were 0.2 to 0.5 mm deep and 0.2 to 0.4 mm wide. The surfaces, compared to a smooth flat surface, provided a five-fold increase in the heat transfer coefficient and a two-fold increase in the critical heat flux. The article analyses the influence of the width and height of the microchannel on the heat transfer process. The maximum heat flux was 271.7 kW/m<sup>2</sup>, and the highest heat transfer coefficient obtained was 25 kW/m<sup>2</sup>K. Furthermore, the experimental results were compared with selected correlations for the nucleate pool boiling.
format	article
author	Robert Kaniowski Robert Pastuszko
author_facet	Robert Kaniowski Robert Pastuszko
author_sort	Robert Kaniowski
title	Boiling of FC-72 on Surfaces with Open Copper Microchannel
title_short	Boiling of FC-72 on Surfaces with Open Copper Microchannel
title_full	Boiling of FC-72 on Surfaces with Open Copper Microchannel
title_fullStr	Boiling of FC-72 on Surfaces with Open Copper Microchannel
title_full_unstemmed	Boiling of FC-72 on Surfaces with Open Copper Microchannel
title_sort	boiling of fc-72 on surfaces with open copper microchannel
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/0023985a60cc4842b92441a603fd5251
work_keys_str_mv	AT robertkaniowski boilingoffc72onsurfaceswithopencoppermicrochannel AT robertpastuszko boilingoffc72onsurfaceswithopencoppermicrochannel
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Boiling of FC-72 on Surfaces with Open Copper Microchannel

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