抄録
An experimental study has been made on the forced convection boiling heat transfer in a narrow space The heated surface diameter was 20.0mm. The distance between the nozzle plate and the heated surface was changed within a range from 0.3 mm to 0.6 mm and the nozzle diameter was 2.2 mm. Saturated water was impinged on the center of the heated surface and flowed radially on it. In this report the nozzle plate had a flat bottom which was parallel to the heated surface. It is clarified in the present study that heat transfer characteristics varied with the change of space and mass flow-rate of the impinging jet, especially in the region of transition boiling. The quantity of maximum heat flux increased as the space decreased.
