マランゴニ効果を利用した溶液中への蒸気吸収の促進 : 第1報,高級アルコールの添加による吸収促進効果とマランゴニ対流の発生機構

抄録

This study explores the mechanism of the steam absorption enhancement by the addition of small amount of n-octanol (C₈ H₁7 OH) into the aqueous solution of LiBr. Both the visualization by holographic interferometer and the temperature measurements in the solution indicate clearly that the steam absorption processes are classified into three representative cases by the amount of n-octanol addition. The violent Marangoni convection is recognized shortly after the steam absorption starts in the addition range of 00.1∼2 mass %. Especially in case of 0.1mass%, the heat input by the steam absorption increases to almost 400% compared with the one without the addition. Furthermore the measurements of the surface tension and the observations on the solution surface are made in order to investigate the basic mechanism for the generation of the Marangoni convection. It is the surface of the solution.