Journal of Thermal Science and Technology
Online ISSN : 1880-5566
ISSN-L : 1880-5566
Papers
Design and characterization of isothermal chambers filled with gradient-porous materials
Baicun WANGLiang WANGJiayi WUYifeng HONGXiaohui YANHao GONGZhongbin XU
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2017 Volume 12 Issue 1 Pages JTST0008

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Abstract

The concept of isothermal chambers filled with GPMs (gradient porous materials) was presented to homogenize the temperature distribution between the center and outer wall of the chambers with disc-shaped cross-section. An analytical heat transfer model was first developed to study the thermal behaviors of the GPMs chamber. Besides, numerical simulation was conducted to obtain the temperature profiles of the chamber with different GPMs. The effects of various gradient parameters on the heat resistance, temperature profiles and filling mass of the chamber were investigated in details. The results indicated that the gradient direction and gradient magnitude have a significant influence on the comprehensive thermal performances of the chamber filled with GPMs. Increasing the porosity gradient of GPMs along radius direction can effectively enhance the heat conduction. Moreover, the optimum gradient magnitude was obtained analytically to further improve the heat conduction of the GPMs chamber.

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© 2017 by The Japan Society of Mechanical Engineers and The Heat Transfer Society of Japan
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