アニュラー型回転ヒートパイプの水平姿勢における作動液流動と熱輸送特性 : 第3報, 作動液膜の蒸発形態と蒸発熱伝達率

The evaporation patterns of methanol liquid film feeded on heated rotating tube inner wall is visualized by optical image de-rotation method, while the heat flux is measured under the same condition. It is shown that there are several flow patterns of natural convection and that the evaporation heat transfer coefficient of the natural convection film increase with the rotational acceleration but the nuclear boiling is restrained within the conditions of 15 to 325 for the ratio of rotational acceleration and gravitational one, and 0.8 to 4.2 mm for film thickness, 2500 to 75000 W/m2 for heat flux, 5 to 40 K for wall super heat.