Experimental study of airflow-mixture by using PIV

Kamiji, Yu; Terada, Atsuhiko  ; Sugiyama, Hitoshi*

Japan Atomic Energy Agency (JAEA) has been conducting R&D on heat utilizing system of High Temperature Gas-cooled Reactor (HTGR). Toward the lower energy consumption and cost reduction of system, we think it is effective to develop waste heat recovery technology. For hydrogen production by thermochemical iodine sulfur process (IS process) which is considered as one of the heat utilization, temperature control unit is an important factors for stable process system driving. Authors focused gas-mixing temperature control and proceeded to design high performance compact unit for process recuperators. From experimental results, in the case of door opening inclining toward flow, there was quite high turbulent kinetic energy up to 3.0U because of effects of turbulence from separation at tip of the door. Additionally in that door opening, heated flow partially goes to door, so that mixture starts in upstream of mixing region and temperature diffusion gets quite active.