Simultaneous measurement of the thermal conductivity and thermal diffusivity of unconsolidated materials by the transient hot wire method

1985 ◽  
Vol 56 (7) ◽  
pp. 1394-1398 ◽  
Author(s):  
Greg C. Glatzmaier ◽  
W. Fred Ramirez
Keyword(s):  
Thermal Conductivity ◽  
Thermal Diffusivity ◽  
Simultaneous Measurement ◽  
Transient Hot Wire ◽  
Hot Wire ◽  
Transient Hot Wire Method ◽  
Wire Method

Analysis of the Transient Hot-Wire Method to Measure Thermal Conductivity of Silica Aerogel: Influence of Wire Length, and Radiation Properties

2014 ◽  
Vol 136 (4) ◽  
Author(s):  
Ellann Cohen ◽  
Leon Glicksman
Keyword(s):  
Thermal Conductivity ◽  
Silica Aerogel ◽  
Test Method ◽  
Wire Radius ◽  
Wire Length ◽  
Transient Hot Wire ◽  
Hot Wire ◽  
End Effects ◽  
Transient Hot Wire Method ◽  
Wire Method

When the transient hot-wire method is used to measure the thermal conductivity of very low thermal conductivity silica aerogel (in the range of 10 mW/m·K at 1 atm) end effects due to the finite wire size and radiation corrections must be considered. An approximate method is presented to account for end effects with realistic boundary conditions. The method was applied to small experimental samples of the aerogel using different wire lengths. Initial conductivity results varied with wire length. This variation was eliminated by the use of the end effect correction. The test method was validated with the NIST (National Institute of Standards and Technology) Standard Reference Material 1459, fumed silica board to within 1 mW/m·K. The aerogel is semitransparent. Due to the small wire radius and short transient, radiation heat transfer may not be fully accounted for. In a full size aerogel panel radiation will augment the phonon conduction by a larger amount.

scholarly journals A Study on Thermal Conductivity of Mixture of Magnesia Particle and Molten Nitrate by a Transient Hot Wire Method

Netsu Bussei ◽  
2005 ◽  
Vol 19 (3) ◽  
pp. 142-146 ◽  
Author(s):  
Kazuyuki Kitano ◽  
Katsuya Hanyuda ◽  
Eisyun Takegoshi ◽  
Masatoshi Sawada ◽  
Yoshio Hirasawa ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Transient Hot Wire ◽  
Hot Wire ◽  
Transient Hot Wire Method ◽  
Wire Method
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