Technical Brief

Thermal Conduction Performance of Fiber-Enhanced Polyalcohol Binary Systems

[+] Author and Article Information
Xiaowu Wang

Department of Physics,
South China University of Technology,
Guangzhou 510640, Guangdong, China

Yaochao Li

School of Mechanical and Automotive Engineering,
South China University of Technology,
Guangzhou 510640, Guangdong, China

Zhenpin Wan

School of Mechanical and Automotive Engineering,
South China University of Technology,
Guangzhou 510640, Guangdong, China
e-mail: jouney5@163.com

1Corresponding author.

Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received March 12, 2014; final manuscript received November 24, 2014; published online December 23, 2014. Assoc. Editor: Jose L. Lage.

J. Heat Transfer 137(4), 044501 (Apr 01, 2015) (4 pages) Paper No: HT-14-1128; doi: 10.1115/1.4029269 History: Received March 12, 2014; Revised November 24, 2014; Online December 23, 2014

Polyalcohol has poor heat conduction performance. A fiber-enhanced polyalcohol binary system combines polyalcohol with a copper fiber net to improve its heat conduction performance. In a binary system without fibers, more heat input increases the wall temperature near the container than when the fiber is present. Compared to a polyalcohol binary system, pentaerythritol/Tris hydroxymethyl aminomethane (PE/TRIS) without fibers, fiber-enhanced polyalcohol system PE/TRIS shows quicker response to energy input from the exterior region. The phase change temperature in a fiber-enhanced polyalcohol binary system is much lower than that in a polyalcohol system without fibers. This is because of the metastate plastic state that presents a nonfaceted phase interface with a larger radius of curvature in a polyalcohol system without fibers. The porous structure of the fiber is smaller than the size of the phase interface in a polyalcohol system without fibers and can increase the equilibrium pressure and make the phase change easier.

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Grahic Jump Location
Fig. 1

Schematic diagram of the experiment

Grahic Jump Location
Fig. 2

Schematic diagram of the container, coordinate set, the thermocouple arrangement, and the copper fiber

Grahic Jump Location
Fig. 3

The experimental results of heat transfer performance of polyalcohol. (a) Time that points 101–120 take to reaching temperature of 120 °C. (b) Phase change temperatures of points 101–120.

Grahic Jump Location
Fig. 4

Phase equilibrium curve




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