A composite heat transfer correlation for saturated flow boiling in small channels

摘要: Abstract Recent reviews of flow boiling heat transfer in small tubes and channels have highlighted the need for predictive correlations that are applicable over a wide range parameters across different studies. A composite correlation is developed present work which includes nucleate convective terms while accounting effect bubble confinement channels. The from database 3899 data points 14 studies literature covering 12 wetting non-wetting fluids, hydraulic diameters ranging 0.16 to 2.92 mm, numbers 0.3 4.0. mass fluxes included 20 3000 kg m −2  s −1 , 0.4 115 W cm vapor qualities 0 1, saturation temperatures −194 97 °C. While some sets show opposing trends with respect parameters, mean absolute error less than 30% achieved proposed correlation.