Freezing characteristics of binary solution droplets of ionic liquid and water on a cold porous surface

The formation of ice on various surfaces poses significant challenges across multiple industries, leading to increased operational costs, reduced efficiency, and safety hazards. This article investigates the freezing characteristics of binary solution droplets composed of ionic liquid and water on cold porous surfaces, shedding light on the complex dynamics involved. The study reveals that the freezing process of these droplets involves several stages, including evaporation, isothermal freezing, and sublimation, with the ice shell forming abruptly at the onset of freezing. The morphology and internal composition of the droplets are influenced by factors such as ambient humidity, flow, and surface wettability. The introduction of ionic liquids, known for their reduced flammability, negligible vapor pressure, and superior chemical stability, alters the mass transfer dynamics within the freezing droplets. This investigation highlights the potential of ionic liquids in anti-icing applications, as their unique properties can disrupt the ordered crystalline structure of ice and reduce ice adhesion strength. The article provides a detailed analysis of the spreading and freezing characteristics of these droplets, offering insights into the development of effective anti-icing strategies. The study also emphasizes the need for further research into the physical properties of fluids at low temperatures and the icing rules of different types and mass fractions of ionic liquid aqueous solutions on various porous surfaces.