Article ID: 23-13_OA
The red blood cells in the blood can flow inside the capillary blood vessel for the deformation of themselves. In order to add the deformation characteristics to the latent heat capsule, gelatin capsule was used in this study. The purpose of this study has been to investigate the flow drag and heat transfer characteristics of gelatin capsule slurry containing latent heat storage material (= heptadecane) in the straight pipe. When the phase of enclosed heptadecane is different (solid, or liquid), the gelatin capsule diameter is not different, but its softness is different by visual observation. From the flow drag and heat transfer characteristics of gelatin capsule slurry containing heptadecane on the straight pipe test section, the friction factor of this gelatin capsule slurry agrees well with that of the water flow in any capsule concentration. On the other hand, the heat transfer of this gelatin capsule slurry was higher than that of water with increasing capsule concentration. And the heat transfer coefficient containing liquid heptadecane is larger than that containing solid hepatadecane. These are due to that the gelatin capsules breaks a temperature boundary layer near the pipe wall. This tendency was influenced by the deformation of gelatin capsule.
