Thermal conductivity and diffusivity measurements at cryogenic temperatures by double specimen technique

✍ Scribed by A. Khalil

• Publisher: Elsevier Science
• Year: 1982
• Tongue: English
• Weight: 218 KB
• Volume: 22
• Category: Article
• ISSN: 0011-2275
• DOI: 10.1016/0011-2275(82)90062-5

✦ Synopsis

A double specimen technique is used in measuring the thermal conductivity and diffusivity of low thermal conductivity material& In this technique good thermal contact is mainrained between the heat source and sink and two geometrically similar specimens. A thincopper heater plate is compressed between the two specimens and the temperature difference is measured between the heat source and the temperature controlled heat sink. Thermal conductivity is determined at steady state conditions by the differential method while the diffusivity is determined from transient measurements combined with an analytical solution to the one dimensional solution of the diffusion equation.

Thermal conductivity and diffusivity measurements at cryogenic temperatures by double specimen technique

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