Heat Flux Correlation for Spray Cooling in the Nonboiling Regime |
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| Authors: | Yaqing Wang Minghou Liu Dong Liu Kan Xu |
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| Affiliation: | 1. Department of Thermal Science and Energy Engineering , University of Science and Technology of China , Hefei, Anhui, China;2. The 38th Research Institute of CETC , Hefei, Anhui, China;3. Department of Thermal Science and Energy Engineering , University of Science and Technology of China , Hefei, Anhui, China |
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| Abstract: | An experimental facility was developed to investigate the nonboiling heat transfer performance of water spray cooling. The effects of mass flux and wall temperature on heat transfer coefficient and heat flux were experimentally studied. It was found that heat transfer coefficient increased with the increasing of mass flux and wall temperature. Generalized correlations were developed for the Nusselt number related to wall temperature and the average Nusselt number as a function of the spray Reynolds number and the nondimensional temperature with an absolute error of 4% and 15% when the Reynolds number is more than 440. Compared with the data of Oliphant et al., it was observed that the usage field of the correlations could be extended to Reynolds number greater than 240. |
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