期刊
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
卷 24, 期 -, 页码 276-283出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jiec.2014.09.041
关键词
Multi-wall carbon nanotubes; Graphene; CHF; Heat flux; Spray deposition
资金
- National Research Foundation of Korea (NRF) - Korean government (MEST) [2013M2B2A9A03051391]
- National Research Foundation of Korea [2013M2B2A9A03051391, 21A20130012366] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
This paper examines the differences in critical heat flux (CHF) based on multi-wall carbon nanotubes and graphene have been found as new heat-transfer materials which are carbon allotropes with different shapes. The analysis of experimental data and results of calculations in pool-boiling critical heat flux experiments by spray-depositing oxidized multi-wall carbon nanotubes and graphene onto heat-transfer samples have been done to improve the economic efficiency and safety of the heat-transfer apparatus. The results show that the contact angle of the heat-transfer surface linearly decreased with spray deposition time, which resulted in an increased critical heat flux. The oxidized multi-wall carbon nanotubes and graphene showed maximum pool-boiling heat-transfer coefficients at 19.8 degrees and 21.7 degrees, respectively, while the pool-boiling heat-transfer coefficients decreased at angles of 9.9 degrees or less and 12.5 degrees or less, respectively. Also, the following new correction formula has been derived and compared with a current model by introducing a correction factor to Kandlikar's prediction model. (C) 2014 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
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