Friction Factor Reduction by Addition of a Surfactant in the Transport of a Water / Particle Slurry in a Pipe

概要

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This experimental atudy examines pressure drop due to pipe friction when a surfactant is added to flowing water / particle slurry, with the goal of using the results in order to reduce power supply requirements when transporting slurry by pump, and improve the heat capacity of the transportation fluid. The following results were obtained : (1)Pressure drop for the water / particle slurry containing the surfactant in which particles accounted for about 12% of the fluid volume, was 25-50% smaller than in case of flowing water. (2)When transporting the water / particle slurry containing the surfactant, it is advisable to reduce the velocity and regulate the Reynolds number Re to approximately 3×10^4. (3)If the particles in the water / particle slurry are replaced by microcapsules that have thermal energy storage effect due to their latent heat, the heat transported per unit volume of this slurry becomes twice that of plain water, and the required pumping power is reduced to half that of water.
一般社団法人日本機械学会の論文
1997-08-15