Oil-in-Oil emulsions of stearic acid dispersed in silicone oil with enhanced energy storage capability for heat transfer fluids

Non-aqueous phase change emulsions are very unknown and promising multifunctional fluids consisting of materials dispersed in carrier fluids, both being oily phases. The oil-in-oil allow the possibility using same medium for latent heat storage transport under more extreme pressure temperature conditions. In this paper, stable composed stearic acid with a melting point 68–71 °C silicone oil have been developed. Stearic acid-in-silicone emulsion samples different concentrations were evaluated by analysing their thermophysical properties, viscous viscoelastic behaviour microstructure. Emulsion properties below material greatly influenced concentration disperse phase. Thus, as lowered, well-developed three-dimensional network crystalline structures interconnected each other was formed. Furthermore, physicochemical thermal stabilities examined proved several mechanical–thermal cycles, withstanding than 100 cycles calorimeter. results indicate that an attractive candidate energy applications enthalpy 10 wt% 22.32 J/g.