Friction Factor Reduction by Addition of a Surfactant in the Transport of a Water/Particle Slurry in a Pipe
| Autor: | Masayoshi Hiramatsu, Tomoko Kasuga, Michio Yanadori, Masao Imanari |
|---|---|
| Rok vydání: | 1997 |
| Předmět: |
Fluid Flow and Transfer Processes
Pressure drop Materials science Waste management Mechanical Engineering Reynolds number Condensed Matter Physics Thermal energy storage Heat capacity Pipe flow symbols.namesake Pulmonary surfactant Latent heat symbols Slurry Particle Physical and Theoretical Chemistry Composite material |
| Zdroj: | JSME International Journal Series B. 40:402-408 |
| ISSN: | 1347-5371 1340-8054 |
| Popis: | This experimental study 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 3x10 4 . (3) If the particles in the water/particle slurry are replaced by microcapsules that have a 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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