A new comprehensive model for nucleate pool boiling heat transfer of pure liquid at low to high heat fluxes including CHF |
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| Authors: | Huaqiang Chu Boming Yu |
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| Affiliation: | 1. School of Physics, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, PR China;2. State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, PR China;1. Department of Mechanical Engineering, National Institute of Technology, Tiruchirappalli, 620 015, India;2. Department of Mechanical Engineering, K.L.N. College of Engineering, Madurai, Tamilnadu, India;1. Department of Mechanical Engineering, Rochester Institute of Technology, United States;2. School of Chemistry and Material Science, Rochester Institute of Technology, United States |
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| Abstract: | Based on the fractal distribution of nucleation sites present on heating surfaces, a new comprehensive model is developed for the nucleate pool boiling of pure liquid at low to high heat fluxes including the critical heat flux (CHF). The proposed model is expressed as a function of total number, minimum and maximum sizes of active nucleation sites, fractal dimension, superheat temperature, and properties of fluids. No additional empirical constant is introduced in the proposed model. This fractal model contains less empirical constants than the conventional models. The model predictions are in good agreement with the available experimental data. |
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