New cooling approach using successive evaporation and condensation of a liquid film inside a vertical mini-channel

In this paper, the successive evaporation and condensation of water-ethanol and water-methanol liquid film mixtures for cooling purpose is investigated. The simulations are achieved using a finite difference model to describe the heat and mass transfer during this process. The studied process relies on the absorption of energy at the evaporator and then the release of this energy at the condenser. The evaporation and heat exchange abilities of the mixtures composition are analysed to identify the appropriate mixture for the new proposed cooling approach. The results indicate that more energy equilibrium occurs with high concentration of water in the mixture with the advantage of having low bulk and interface temperature.