- Author
-
Dougherty, B. P.
|
Thomas, W. C.
- Title
- Development of an Automated Probe for Thermal Conductivity Measurements. Final Report.
- Coporate
- Virginia Polytechnic Institute and State University, Blacksburg
- Sponsor
- National Institute of Standards and Technology, Gaithersburg, MD
- Report
-
NIST GCR 89-563
May 1989
- Distribution
- Available from National Technical Information Service
- Contract
- NIST-GRANT-60NANB6D0642
NSNB-6-D0642
- Keywords
-
temperature measuring instruments; thermistors; thermal conductivity; thermal resistance; thermophysical properties; liquids; thermal measurements; mathematical models; calibrating
|
thermal conductivity
- Abstract
- A transient technique was validated for making thermal conductivity measurements. The technique incorporated a small, effectively spherical, heat source and temperature sensing probe. The actual thermal conductivity measurements lasted 30 seconds. After approximately 15 minutes of data reduction, a value for thermal conductivity was obtained. The probe yielded local thermal conductivity measurements. Spherical sample volumes less than 8 cu cm were required for the materials tested. Thermal conductivity (and moisture) distributors can be measured for relatively dry or wetted samples.