Heat Transfer of Single and Binary Systems inPool Boiling

The present research focuses on the study of the effect of mass transfer resistance on the rate of heat transfer in pool boiling. The nucleate pool boiling heat transfer coefficients for binary mixtures (ethanol-n-butanol, acetone-n-butanol, acetone-ethanol, hexane-benzene, hexane-heptane, and metha...

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Autores principales:	Abbas J. Sultan, Balasim A. Abid
Formato:	article
Lenguaje:	EN
Publicado:	Al-Khwarizmi College of Engineering – University of Baghdad 2010
Materias:	pool boiling binary systems. Chemical engineering TP155-156 Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/5a713ecc027c4938853e05bad99b63a8
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spelling	oai:doaj.org-article:5a713ecc027c4938853e05bad99b63a82021-12-02T06:43:42ZHeat Transfer of Single and Binary Systems inPool Boiling1818-1171https://doaj.org/article/5a713ecc027c4938853e05bad99b63a82010-01-01T00:00:00Zhttp://www.iasj.net/iasj?func=fulltext&aId=2237https://doaj.org/toc/1818-1171The present research focuses on the study of the effect of mass transfer resistance on the rate of heat transfer in pool boiling. The nucleate pool boiling heat transfer coefficients for binary mixtures (ethanol-n-butanol, acetone-n-butanol, acetone-ethanol, hexane-benzene, hexane-heptane, and methanol-water) were measured at different concentrations of the more volatile components. The systems chosen covered a wide range of mixture behaviors.<br />The experimental set up for the present investigation includes electric heating element submerged in the test liquid mounted vertically. Thermocouple and a digital indictor measured the temperature of the heater surface. The actual heat transfer rate being obtained by multiplying the voltmeter and ammeter readings. A water cooled coil condenses the vapor produced by the heat input and the liquid formed returns to the cylinder for re-evaporation.<br />The boiling results show that the nucleate pool boiling heat transfer coefficients of binary mixtures were always lower than the pure components nucleate pool boiling heat transfer coefficients. This confirmed that the mass transfer resistance to the movement of the more volatile component was responsible for decrease in heat transfer and that the maximum deterioration that was observed at a point was the absolute concentration differences between vapor and liquid phases at their maximum. All the data points were tested with the most widely known correlations namely those of Calus-Leonidopoulos, Fujita and Thome. It was found that Thome's correlation is the more representative form, for it gave the least mean and standard deviations<br />Abbas J. SultanBalasim A. AbidAl-Khwarizmi College of Engineering – University of Baghdadarticlepoolboilingbinarysystems.Chemical engineeringTP155-156Engineering (General). Civil engineering (General)TA1-2040ENAl-Khawarizmi Engineering Journal, Vol 6, Iss 1, Pp 14-23 (2010)
institution	DOAJ
collection	DOAJ
language	EN
topic	pool boiling binary systems. Chemical engineering TP155-156 Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	pool boiling binary systems. Chemical engineering TP155-156 Engineering (General). Civil engineering (General) TA1-2040 Abbas J. Sultan Balasim A. Abid Heat Transfer of Single and Binary Systems inPool Boiling
description	The present research focuses on the study of the effect of mass transfer resistance on the rate of heat transfer in pool boiling. The nucleate pool boiling heat transfer coefficients for binary mixtures (ethanol-n-butanol, acetone-n-butanol, acetone-ethanol, hexane-benzene, hexane-heptane, and methanol-water) were measured at different concentrations of the more volatile components. The systems chosen covered a wide range of mixture behaviors.<br />The experimental set up for the present investigation includes electric heating element submerged in the test liquid mounted vertically. Thermocouple and a digital indictor measured the temperature of the heater surface. The actual heat transfer rate being obtained by multiplying the voltmeter and ammeter readings. A water cooled coil condenses the vapor produced by the heat input and the liquid formed returns to the cylinder for re-evaporation.<br />The boiling results show that the nucleate pool boiling heat transfer coefficients of binary mixtures were always lower than the pure components nucleate pool boiling heat transfer coefficients. This confirmed that the mass transfer resistance to the movement of the more volatile component was responsible for decrease in heat transfer and that the maximum deterioration that was observed at a point was the absolute concentration differences between vapor and liquid phases at their maximum. All the data points were tested with the most widely known correlations namely those of Calus-Leonidopoulos, Fujita and Thome. It was found that Thome's correlation is the more representative form, for it gave the least mean and standard deviations<br />
format	article
author	Abbas J. Sultan Balasim A. Abid
author_facet	Abbas J. Sultan Balasim A. Abid
author_sort	Abbas J. Sultan
title	Heat Transfer of Single and Binary Systems inPool Boiling
title_short	Heat Transfer of Single and Binary Systems inPool Boiling
title_full	Heat Transfer of Single and Binary Systems inPool Boiling
title_fullStr	Heat Transfer of Single and Binary Systems inPool Boiling
title_full_unstemmed	Heat Transfer of Single and Binary Systems inPool Boiling
title_sort	heat transfer of single and binary systems inpool boiling
publisher	Al-Khwarizmi College of Engineering – University of Baghdad
publishDate	2010
url	https://doaj.org/article/5a713ecc027c4938853e05bad99b63a8
work_keys_str_mv	AT abbasjsultan heattransferofsingleandbinarysystemsinpoolboiling AT balasimaabid heattransferofsingleandbinarysystemsinpoolboiling
_version_	1718399754847649792

Heat Transfer of Single and Binary Systems inPool Boiling

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