- Author
-
Zarr, R. R.
- Title
- Standard Reference Materials: Glass Fiberboard, SRM 1450c, for Thermal Resistance From 280 K to 340 K.
- Coporate
- National Institute of Standards and Technology, Gaithersburg, MD
- Report
-
NIST SP 260-130,
April 1997,
64 p.
- Distribution
- Available from Government Printing Office
- Keywords
-
building technology
|
calibration
|
density
|
fibrous glass board
|
guarded hot plate
|
heat flow meter
|
interlaboratory
|
round robin
|
standard reference material (SRM) 1450
|
thermal conductivity
|
thermal insulation
|
uncertainty
|
experimental design
|
standard reference materials
- Abstract
- Thermal conductivity measurements at room temperature are presented as the basis for certified values of thermal resistance for SRM 1450c, Fibrous Glass Board. The measurements have been conducted in accordance with a randomized full factorial experimental design with two variables, bulk density and temperature, using NIST's one-meter line-heat-source guarded-hot-plate apparatus. Uncertainties of the measurements, consistent in format with current international guidelines, have been prepared. The thermal conductivity was measured over ranges of bulk density from 150 kg/m3 to 165 kg/m3 and mean temperature from 280 K to 340 K. Statistical analyses of the physical properties from the SRM are presented and include variations between boards, as well as within board. Material characterization, including the material's microstructure, is presented. Results are compared to data from previous material lots of the SRM 1450 Series as well as to data from an international round robin of guarded-hot-plate apparatus.