Abstract
Expected to improve heat flux and to downsizing of power module cooler, by use of forced convective boiling heat transfer. However, about 100mm length was required for heat transfer surface and reduction of heat flux occurred in downstream area. Heat flux reduction was caused by inhibition of subcooled boiling. This study examined Enhancement of forced convective boiling heat transfer using spiral flow. By making liquid flow path layout and providing a step, spiral flow was generated. Results of the boiling heat transfer test by using the spiral flow path, temperature rise of the downstream was suppressed and length of subcooled boiling area became 1.8 times the straight flow path.
