Heat transfer and pressure drop of supercritical carbon dioxide in multi-port channels

This paper reports an experimental study of the local and average heat transfer and the pressure drop of supercritical CO₂ in multi-port channels. The results indicate that high rates of heat transfer coefficient are achieved in the near-critical region, and that the system pressure, the mass velocity and the temperature of CO₂ all have important effects on the heat transfer characteristics. Based on large amounts of experimental data, a new empirical correlation was developed for forced convection of supercritical CO₂ in horizontal mini/micro channels in cooling case.