In this present work, bubble dynamics of subcooled flow boiling in water–ethanol mixture is investigated through visualization using a high-speed camera in horizontal rectangular channels. The heat transfer coefficient of water–ethanol mixture during subcooled flow boiling is determined for various parameters like heat flux, mass flux, and channel inlet temperature. The effect of bubble departure diameter on heat transfer coefficient is discussed. A correlation is developed for subcooled flow boiling Nusselt number of water–ethanol mixture. The parameters considered for correlation are grouped as dimensionless numbers by Buckingham -theorem. The present correlation is compared with the experimental data. The mean absolute error (MAE) of Nusselt number of water–ethanol mixture calculated from the experimental data and those predicted from the present correlation is 10.39%. The present correlation is also compared with the available literature correlations developed for water. The MAE of Nusselt number of water predicted from the present correlation and those predicted with Papel, Badiuzzaman, Moles–Shaw, and Baburajan correlations is 41%, 19.61%, 29.9%, and 43.1%, respectively.
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December 2017
Research-Article
Experimental Investigation of Heat Transfer Coefficient and Correlation Development for Subcooled Flow Boiling of Water–Ethanol Mixture in Conventional Channel
B. G. Suhas,
B. G. Suhas
Mechanical Engineering Department,
National Institute of Technology Karnataka,
Srinivasanagara, Surathkal,
Mangalore, Karnataka 575025, India
e-mail: suhas_bg@yahoo.co.in
National Institute of Technology Karnataka,
Srinivasanagara, Surathkal,
Mangalore, Karnataka 575025, India
e-mail: suhas_bg@yahoo.co.in
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A. Sathyabhama
A. Sathyabhama
Mechanical Engineering Department,
National Institute of Technology Karnataka,
Srinivasanagara, Surathkal,
Mangalore, Karnataka 575025, India
e-mail: bhama72@gmail.com
National Institute of Technology Karnataka,
Srinivasanagara, Surathkal,
Mangalore, Karnataka 575025, India
e-mail: bhama72@gmail.com
Search for other works by this author on:
B. G. Suhas
Mechanical Engineering Department,
National Institute of Technology Karnataka,
Srinivasanagara, Surathkal,
Mangalore, Karnataka 575025, India
e-mail: suhas_bg@yahoo.co.in
National Institute of Technology Karnataka,
Srinivasanagara, Surathkal,
Mangalore, Karnataka 575025, India
e-mail: suhas_bg@yahoo.co.in
A. Sathyabhama
Mechanical Engineering Department,
National Institute of Technology Karnataka,
Srinivasanagara, Surathkal,
Mangalore, Karnataka 575025, India
e-mail: bhama72@gmail.com
National Institute of Technology Karnataka,
Srinivasanagara, Surathkal,
Mangalore, Karnataka 575025, India
e-mail: bhama72@gmail.com
1Corresponding author.
Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF THERMAL SCIENCE AND ENGINEERING APPLICATIONS. Manuscript received April 9, 2016; final manuscript received January 21, 2017; published online April 19, 2017. Assoc. Editor: Wei Li.
J. Thermal Sci. Eng. Appl. Dec 2017, 9(4): 041003 (11 pages)
Published Online: April 19, 2017
Article history
Received:
April 9, 2016
Revised:
January 21, 2017
Citation
Suhas, B. G., and Sathyabhama, A. (April 19, 2017). "Experimental Investigation of Heat Transfer Coefficient and Correlation Development for Subcooled Flow Boiling of Water–Ethanol Mixture in Conventional Channel." ASME. J. Thermal Sci. Eng. Appl. December 2017; 9(4): 041003. https://doi.org/10.1115/1.4036202
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