EXPERIMENTAL INVESTIGATION OF MARANGONI EFFECT IN AQUEOUS LiBr SOLUTION WITH ADDITIVES

Yong Tae Kang, K. Iizuka, Atsushi Akisawa, Takao Kashiwagi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The objective of this paper is to establish a model for inducement of Marangoni convection in aqueous LiBrsolution with heat transferadditives. Basic mechanism of Marangoni convection was introduced from the viewpoints of the surface tension and the interfacial tension gradients. The Wilhelmy plate method was used to measure the surface tension and the interfacial tension of various heat transfer additives such as n-Octanol, 2-Octanol, 3-Octanol, 4-Octanol, n- Decanol, 2-Decanol, 3-Decanoland 2-ethly-1-hexanol. It was found that the salting-out model can not be a general criterion for inducement of Marangoni convection. The salting-out effect is a trigger for inducement of Marangoni convection before the additive solubility while the imbalance of the surface tension and the interfacial tension is a trigger for inducement of Marangoni convection afterthe solubility. The surface tension gradients by the solution temperature is not atriggerfor inducement of Marangoni convection. The interfacial tension gradients by the LiBr concentration and the solution temperature can not be an initial cause for inducement of Marangoni convection. However, the magnitude of the interfacial tension plays an important role for inducement of Marangoni convection.

Original languageEnglish
Title of host publicationAdvanced Energy Systems
PublisherAmerican Society of Mechanical Engineers (ASME)
Pages253-261
Number of pages9
ISBN (Electronic)9780791815991
DOIs
Publication statusPublished - 1998
Externally publishedYes
EventASME 1998 International Mechanical Engineering Congress and Exposition, IMECE 1998 - Anaheim, United States
Duration: 1998 Nov 151998 Nov 20

Publication series

NameASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
Volume1998-C

Conference

ConferenceASME 1998 International Mechanical Engineering Congress and Exposition, IMECE 1998
Country/TerritoryUnited States
CityAnaheim
Period98/11/1598/11/20

Bibliographical note

Funding Information:
The authors acknowledge that this work has been partially funded by Japan Science and Technology Corporation (JST).

Publisher Copyright:
© 1998 American Society of Mechanical Engineers (ASME). All rights reserved.

ASJC Scopus subject areas

  • Mechanical Engineering

Fingerprint

Dive into the research topics of 'EXPERIMENTAL INVESTIGATION OF MARANGONI EFFECT IN AQUEOUS LiBr SOLUTION WITH ADDITIVES'. Together they form a unique fingerprint.

Cite this