Pool film boiling was studied by visualized quenching experiments on stainless steel spheres in water at the atmospheric pressure. The surfaces of the spheres were coated to be superhydrophobic (SHB), having a static contact angle greater than 160 deg. Subcooled conditions were concerned parametrically with the subcooling degree being varied from 0 °C (saturated) to 70 °C. It was shown that film boiling is the overwhelming mode of heat transfer during the entire course of quenching as a result of the retention of stable vapor film surrounding the SHB spheres, even at very low wall superheat that normally corresponds to nucleate boiling. Pool boiling heat transfer is enhanced with increasing the subcooling degree, in agreement with the thinning trend of the vapor film thickness. The heat flux enhancement was found to be up to fivefold for the subcooling degree of 70 °C in comparison to the saturated case, at the wall superheat of 200 °C. A modified correlation in the ratio form was proposed to predict pool film boiling heat transfer from spheres as a function of the subcooling degree.
Skip Nav Destination
Article navigation
Research-Article
Subcooled Pool Film Boiling Heat Transfer From Spheres With Superhydrophobic Surfaces: An Experimental Study
Li-Wu Fan,
Li-Wu Fan
Mem. ASME
Institute of Thermal Science and Power Systems,
School of Energy Engineering,
Zhejiang University,
Hangzhou 310027, China;
Institute of Thermal Science and Power Systems,
School of Energy Engineering,
Zhejiang University,
Hangzhou 310027, China;
State Key Laboratory of Clean Energy Utilization,
Zhejiang University,
Hangzhou 310027, China
e-mail: liwufan@zju.edu.cn
Zhejiang University,
Hangzhou 310027, China
e-mail: liwufan@zju.edu.cn
Search for other works by this author on:
Jia-Qi Li,
Jia-Qi Li
Institute of Thermal Science and Power Systems,
School of Energy Engineering,
Zhejiang University,
Hangzhou 310027, China
School of Energy Engineering,
Zhejiang University,
Hangzhou 310027, China
Search for other works by this author on:
You-You Su,
You-You Su
Institute of Thermal Science and Power Systems,
School of Energy Engineering,
Zhejiang University,
Hangzhou 310027, China
School of Energy Engineering,
Zhejiang University,
Hangzhou 310027, China
Search for other works by this author on:
Huan-Li Wang,
Huan-Li Wang
Institute of Thermal Science and Power Systems,
School of Energy Engineering,
Zhejiang University,
Hangzhou 310027, China
School of Energy Engineering,
Zhejiang University,
Hangzhou 310027, China
Search for other works by this author on:
Ting Ji,
Ting Ji
Institute of Thermal Science and Power Systems,
School of Energy Engineering,
Zhejiang University,
Hangzhou 310027, China
School of Energy Engineering,
Zhejiang University,
Hangzhou 310027, China
Search for other works by this author on:
Zi-Tao Yu
Zi-Tao Yu
Institute of Thermal Science and Power Systems,
School of Energy Engineering,
Zhejiang University,
Hangzhou 310027, China;
School of Energy Engineering,
Zhejiang University,
Hangzhou 310027, China;
State Key Laboratory of Clean Energy Utilization,
Zhejiang University,
Hangzhou 310027, China
Zhejiang University,
Hangzhou 310027, China
Search for other works by this author on:
Li-Wu Fan
Mem. ASME
Institute of Thermal Science and Power Systems,
School of Energy Engineering,
Zhejiang University,
Hangzhou 310027, China;
Institute of Thermal Science and Power Systems,
School of Energy Engineering,
Zhejiang University,
Hangzhou 310027, China;
State Key Laboratory of Clean Energy Utilization,
Zhejiang University,
Hangzhou 310027, China
e-mail: liwufan@zju.edu.cn
Zhejiang University,
Hangzhou 310027, China
e-mail: liwufan@zju.edu.cn
Jia-Qi Li
Institute of Thermal Science and Power Systems,
School of Energy Engineering,
Zhejiang University,
Hangzhou 310027, China
School of Energy Engineering,
Zhejiang University,
Hangzhou 310027, China
You-You Su
Institute of Thermal Science and Power Systems,
School of Energy Engineering,
Zhejiang University,
Hangzhou 310027, China
School of Energy Engineering,
Zhejiang University,
Hangzhou 310027, China
Huan-Li Wang
Institute of Thermal Science and Power Systems,
School of Energy Engineering,
Zhejiang University,
Hangzhou 310027, China
School of Energy Engineering,
Zhejiang University,
Hangzhou 310027, China
Ting Ji
Institute of Thermal Science and Power Systems,
School of Energy Engineering,
Zhejiang University,
Hangzhou 310027, China
School of Energy Engineering,
Zhejiang University,
Hangzhou 310027, China
Zi-Tao Yu
Institute of Thermal Science and Power Systems,
School of Energy Engineering,
Zhejiang University,
Hangzhou 310027, China;
School of Energy Engineering,
Zhejiang University,
Hangzhou 310027, China;
State Key Laboratory of Clean Energy Utilization,
Zhejiang University,
Hangzhou 310027, China
Zhejiang University,
Hangzhou 310027, China
1Corresponding author.
Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received October 30, 2014; final manuscript received August 4, 2015; published online September 2, 2015. Assoc. Editor: Sujoy Kumar Saha.
J. Heat Transfer. Feb 2016, 138(2): 021503 (8 pages)
Published Online: September 2, 2015
Article history
Received:
October 30, 2014
Revised:
August 4, 2015
Citation
Fan, L., Li, J., Su, Y., Wang, H., Ji, T., and Yu, Z. (September 2, 2015). "Subcooled Pool Film Boiling Heat Transfer From Spheres With Superhydrophobic Surfaces: An Experimental Study." ASME. J. Heat Transfer. February 2016; 138(2): 021503. https://doi.org/10.1115/1.4031303
Download citation file:
Get Email Alerts
Cited By
Effect of Strip-Fin Height on Jet Impingement Heat Transfer in a Rectangular Channel at Two Jet-to-Target Surface Spacings
J. Heat Mass Transfer (May 2024)
Turbulent Pulsating Convective Flow in the Quasi-Steady and Low-Frequency Regimes
J. Heat Mass Transfer (July 2024)
Related Articles
Numerical Simulation of Evaporating Two-Phase Flow in a High-Aspect-Ratio Microchannel with Bends
J. Heat Transfer (August,2017)
Flow Visualization of Submerged Steam Jet in Subcooled Water
J. Heat Transfer (February,2016)
The Leidenfrost Point: Experimental Study and Assessment of Existing Models
J. Heat Transfer (November,1999)
Nucleate Boiling Heat Transfer on Plain and Microporous Surfaces in Subcooled Water
J. Heat Transfer (August,2017)
Related Proceedings Papers
Related Chapters
Liquid Cooled Systems
Thermal Management of Telecommunications Equipment
Thermal Design Guide of Liquid Cooled Systems
Thermal Design of Liquid Cooled Microelectronic Equipment
Forced Convection Subcooled Boiling
Two-Phase Heat Transfer