Correlation of high critical heat flux during flow boiling for water in a small tube at various subcooled conditions |
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| Affiliation: | 1. School of Civil, Environmental and Architectural Engineering, Korea University, Seoul 136-713, Republic of Korea;2. Department of Computer Science and Engineering, Korea University, Seoul 136-713, Republic of Korea;1. Department of Energy Engineering, Zhejiang University, Hangzhou 310027, China;2. College of Electrical Engineering, Zhejiang University, Hangzhou, 310027, China;3. Department of Mechanical and Industrial Engineering (M/C 251), University of Illinois at Chicago, 842 West Taylor Street, Room 2049 ERF 60607-7022, Chicago, IL, United States;1. Department of Mechanical Engineering, City University of Hong Kong, Kowloon, Hong Kong, China;2. Intelligent Manufacturing Engineering Laboratory of Functional Structure and Device in Guangdong, School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, China;1. Department of Mechanical Engineering, University of South Carolina, Columbia, SC 29208 USA;2. George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30321 |
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| Abstract: | High critical heat fluxes (CHFs) for subcooled boiling of water in a small tube were investigated experimentally. A platinum tube with an inner diameter of 1.0 mm and a length of 40.9 mm was used in the experiment. The upward flow velocity, the subcooling of water, and the outlet pressure of the experimental tube were varied to enable a parametric study of the CHFs. The flow velocity ranged from 9 to 13 m/s and the inlet subcooling ranged from 69 to 148 K. The boiling number decreased with increasing Weber number. The boiling number is also dependent on a non-dimensional parameter and the density ratio of liquid to vapor. A correlation for the high CHF of the small tube was obtained based on the experimental data. Finally, the high CHF correlation was evaluated using the CHF data obtained by other researchers. |
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