安定域における飽和膜沸騰の光学的研究

DOI DOI Web Site Web Site Web Site

書誌事項

タイトル別名
  • Photographic Study of Stable Film Saturated Boiling
  • アンテイイキ ニ オケル ホウワ マク フットウ ノ コウガクテキ ケンキュウ

この論文をさがす

抄録

Experiments were carried out on the stable film saturated boiling of water and sodium oleate solution, using three kinds of nichrome wire, 0.6, 0.8 and 1.0mm in diameter and platinum wire, 0.5mm in diameter. The bubble dynamics in stable film boiling was studied. The product of bubble diameter just leaving the vapor film and the frequency of bubble formation takes constant value, if the radiation heat flux exceeds 1∼2% of total heat flux, showing nearly the same numerical value as in case of nucleate boiling, but it decreases with the drop of radiation heat flux below the above-mentioned one. In other words, the behaviors of bubble generation in film boiling present varied aspects according to the difference of emissivity of heating surface, even if the total heat fluxes remain the same. Though the results from the experimental values of heat transfer coefficient show fairly good agreement with Banchero's equation, the experimental points are somewhat lower than Banchero's equation below the heat flux in which the product of bubble diameter and frequency of bubble formation becomes constant. It will be, therefore, necessary to introduce a correlating equation, taking the vapor film stirring effect of generating bubbles into consideration.

収録刊行物

詳細情報 詳細情報について

問題の指摘

ページトップへ