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Method and Apparatus for Measuring Thermal Conductivity of Small, Highly Insulating Specimens (2013)

Kuczmarski, Maria A ; Miller, Robert A

In: CASI

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Publication Date: 2019-08-28

Description: A method and apparatus for the measurement of thermal conductivity combines the following capabilities: 1) measurements of very small specimens; 2) measurements of specimens with thermal conductivity on the same order of that as air; and, 3) the ability to use air as a reference material. Care is taken to ensure that the heat flow through the test specimen is essentially one-dimensional. No attempt is made to use heated guards to minimize the flow of heat from the hot plate to the surroundings. Results indicate that since large correction factors must be applied to account for guard imperfections when specimen dimensions are small, simply measuring and correcting for heat from the heater disc that does not flow into the specimen is preferable.

Keywords: Fluid Mechanics and Thermodynamics

Format: application/pdf

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