Abstract
Flow characteristics of phase change slurries were experimentally investigated. Ice slurry and tetra-n-butyl ammonium bromide (TBAB) hydrate slurry were used as the phase change slurries. Reynolds number, the diameter of the tubes and the solid fraction were varied as the experimental parameters, and the coefficients of pipe friction were calculated from the pressure drop. For low Reynolds number region flow, it was found that the coefficients of pipe friction increased with the solid fraction, and the tendencies of the coefficients of pipe friction were significantly dependent on the solid fraction for high Reynolds number region. Moreover, it was presumed that the phase change slurry can be treated as pseudoplastic fluid, and the laminarization condition was clarified using the apparent Reynolds number. The method to predict the pipe friction coefficients were considered.
