Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : October 20, 2018 - October 21, 2018
Erythritol slurry attracts attention as a heat transfer medium for medium to low temperature thermal utilization. We investigated relationship between Reynolds number and inner wall of tube of erythritol slurry flowing in cooled tube, to avoid the blockage in the pipe transportation of erythritol slurry. It found that when Reynolds number is less than 1100, erythritol crystals sinks the bottom of the tube, and it causes blockage because of accumulation of sinking crystals. When Reynolds number is over 1100 and it forms heterogeneous flow, erythritol crystals adheres on the top of the tube. When Reynolds number is larger and it forms homogeneous flow, the accumulation of the crystals does not occur even after crystal adhesion, and the erythritol slurry can flow continuously. As a result, it can be said that the blockage condition depends on not only flow velocity and cooling temperature but also flow pattern.
