Research Papers

Study on a Pulsating Heat Pipe With Self-Rewetting Fluid

[+] Author and Article Information
Koji Fumoto

Department of Mechanical Engineering, Kushiro National College of Technology, Otanoshike W2-32-1, Kushiro 0840916, Japanfumoto@mech.kushiro-ct.ac.jp

Masahiro Kawaji

Department of Chemical Engineering and Applied Chemistry, University of Toronto, 200 College Street, Toronto ON, M5S3E5, Canadakawaji@ecf.utoronto.ca

Tsuyoshi Kawanami

Department of Mechanical Engineering, Graduate School of Engineering, Kobe University, 1-1 Rokkodai-cho, Naka-ku, Kobe 6578501, Japankawanami@mech.kobe-u.ac.jp

J. Electron. Packag 132(3), 031005 (Sep 09, 2010) (4 pages) doi:10.1115/1.4001855 History: Received November 23, 2009; Revised April 25, 2010; Published September 09, 2010

This paper discusses a pulsating heat pipe (PHP) using a self-rewetting fluid. Unlike other common liquids, self-rewetting fluids have the property that the surface tension increases with temperature. The increasing surface tension at a higher temperature can cause the liquid to be drawn toward a heated surface if a dry spot appears and thus to improve boiling heat transfer. In experiments, 1-butanol and 1-pentanol were added to water at a concentration of less than 1 wt % to make self-rewetting fluid. A pulsating heat pipe made from an extruded multiport tube was partially filled with the self-rewetting fluid water mixture and tested for its heat transport capability at different input power levels. The experiments showed that the maximum heat transport capability was enhanced by a factor of 4 when the maximum heater temperature was limited to 110°C. Thus, the use of a self-rewetting fluid in a PHP was shown to be highly effective in improving the heat transport capability of pulsating heat pipes.

Copyright © 2010 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.



Grahic Jump Location
Figure 7

Variation in thermal resistance with heater power at different working fluids

Grahic Jump Location
Figure 6

Variation in PHP temperature for water and self-rewetting aqueous solution

Grahic Jump Location
Figure 5

Maximum heater power obtained for different fill ratios (1-pentanol)

Grahic Jump Location
Figure 4

Maximum heater power obtained for different fill ratios (1-butanol)

Grahic Jump Location
Figure 3

Surface tension of water, 1-butanol, 1-pentanol, and its aqueous solution

Grahic Jump Location
Figure 2

Aluminum tube used to construct a pulsating heat pipe

Grahic Jump Location
Figure 1

Experimental apparatus



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 Journal Articles
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