TY - GEN
T1 - EXPERIMENTAL INVESTIGATION OF MARANGONI EFFECT IN AQUEOUS LiBr SOLUTION WITH ADDITIVES
AU - Kang, Yong Tae
AU - Iizuka, K.
AU - Akisawa, Atsushi
AU - Kashiwagi, Takao
N1 - 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.
PY - 1998
Y1 - 1998
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85124611655&partnerID=8YFLogxK
U2 - 10.1115/IMECE1998-0850
DO - 10.1115/IMECE1998-0850
M3 - Conference contribution
AN - SCOPUS:85124611655
T3 - ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
SP - 253
EP - 261
BT - Advanced Energy Systems
PB - American Society of Mechanical Engineers (ASME)
T2 - ASME 1998 International Mechanical Engineering Congress and Exposition, IMECE 1998
Y2 - 15 November 1998 through 20 November 1998
ER -