抄録
Boiling heat transfer to an impinging jet which then flowed radially in a narrow space was studied experimentally. The space was confined with a circular heated copper surface of 20 mm in diameter facing upward and a nozzle plate of the same diameter parallel to the heated surface. In this report the nozzle plate had a brim of small height at its edge and a part of the radial flow was stemmed there. The aspects of boiling and fluid flow in the space were largely changed with this brim and the maximum heat flux was improved by about 45% compared with those in the 1st report, where the space was not limited at the end. The scale deposited on the heated surface was much reduced with this type of nozzle plate.
