垂直加熱面上のプール沸騰における限界熱流束(熱工学,内燃機関,動力など)

概要

論文の詳細を見る
Critical heat flux during pool boiling on a wire or plate vertical heater has been measured employing water and refrigerant R113. The experiment was carried out using wires 0.5 to 2mm in diameter and plates 5, 7, and 30mm in width. The height of the heater ranges from 20 to 300mm and the pressurer were 1 and 2 bar for water and 1, 2, 3, and 4 bar for R113. The results show that in the cases of both wires and the plate 5 and 7mm in width, a large coalesced bubble entirely surrounds the vertical heater and rises surrounding it, while for the plate with w=30mm, a large bubble cannot surround and rises along its surface. The CHF characteristic can be divided into two regimes depending on the flow condition when CHF takes place. Correlations are proposed for the CHF of wires and the plates with w=5 and 7mm, yielding good agreement with the CHF data. The CHF for the plate with w=30mm has a similar tendency to that of a one side headed surface and can be predicted reasonably well by using the existing correlation for a one side heated surface.
一般社団法人日本機械学会の論文
1997-01-25