0

Full Content is available to subscribers

Subscribe/Learn More  >

The Aqueous Solutions With Nonlinear Surface Energy and Their Application to Flow Boiling in a Mini/Micro Tube

[+] Author Affiliations
Naoki Ono, Takahiro Yoshida

Shibaura Institute of Technology, Tokyo, Japan

Masahiro Shoji, Shotaro Nishiguchi

Kanagawa University, Yokohama, Kanagawa, Japan

Paper No. ICNMM2007-30166, pp. 1069-1076; 8 pages
doi:10.1115/ICNMM2007-30166
From:
  • ASME 2007 5th International Conference on Nanochannels, Microchannels, and Minichannels
  • ASME 5th International Conference on Nanochannels, Microchannels, and Minichannels
  • Puebla, Mexico, June 18–20, 2007
  • Conference Sponsors: Nanotechnology Institute
  • ISBN: 0-7918-4272-X | eISBN: 0-7918-3800-5
  • Copyright © 2007 by ASME

abstract

The temperature dependency of surface tension of aqueous solutions of some alcohol such as butanol and pentanol behaves in a nonlinear manner. Namely, the value of surface tension increases from some temperature when the solution is heated. Since this was discovered about 30 years ago, several experimental studies were done about the liquid motion focusing on the difference from the normal fluids. At the same time several ideas have been attempted in the application to heat pipes and so on to promote the heat transfer. The direction of thermocapillary force in liquid film of the nonlinear solution on a heated surface acts in the same direction to solute Marangoni force. This characteristic will be much marked in small scale systems such as mini/micro channels. In this talk the author surveys the research about the special aqueous solutions and their applications until now. Moreover, the author will report the new measurement results about the nonlinearity of the temperature dependency of the surface tension of the solutions. Also the author will present the result of flow boiling and the liquid motion when the nonlinear aqueous solution was used as test fluid for mini channel of 1 mm ID. The mini/micro channel was a single quartz tube with thin film heater coated on its outer surface. When the channel was mini channel of 1 mm ID, the dryout position was not much different from the case when pure water was used as test fluid. But the liquid motion was much different. The experiments when the channel was smaller micro channel (for example, 500 μm ID), are being done in the authors’ laboratory. Moreover, the author is also doing the experiments about the boiling heat transfer in regard to the increase of CHF when the nonlinear solution was used as test fluid.

Copyright © 2007 by ASME

Figures

Tables

Interactive Graphics

Video

Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In