Subcooled flow boiling of ethylene-glycol/water mixture in an inclined channel with a hot spot: An experimental study

Based on the experimental data, two new independent empirical correlations are presented to predict the subcooled flow boiling heat transfer inside the horizontal channel with good accuracy. The experimental results show that by increasing the test section surface roughness and fluid velocity the surface heat fluxes increase too. Inclination of the surface in either direction yields higher heat transfer coefficient in comparison to its horizontal position when the surface is smooth but lower for the rough surface.