SYMPOSIA PAPER Published: 01 January 1991
STP16368S

Interlaboratory Comparison of the Apparent Thermal Conductivity of a Fibrous Batt and Four Loose-Fill Insulations

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An interlaboratory comparison of measurements of the apparent thermal conductivities of four loose-fill insulations was conducted according to ASTM Standard Practice C 687 in order to prepare a revised statement of precision and bias. The apparatus used included one guarded hot plate, one thin-heater apparatus, and eight heat-flow meters. All specimens were tested at a mean temperature of 24 °C (75 °F). Test results for fibrous glass blanket were used to characterize the basic imprecision (numerical measure of precision) of the test instruments. The 2σ imprecisions of measurement of apparent thermal conductivity were 2.8% for fibrous glass blanket, 5.8% for cellulose, 9.4% for unbonded glass fiber, 10.5% for mineral wool, and 5.0% for perlite.

Author Information

McCaa, DJ
CertainTeed Corporation, Blue Bell, PA
Smith, DR
National Institute of Standards and Technology, Boulder, CO
Desjarlais, A
National Institute of Standards and Technology, Gaithersburg, MD
Graves, RS
National Institute of Standards and Technology, Gaithersburg, MD
Mumaw, J
National Institute of Standards and Technology, Gaithersburg, MD
Noonan, P
National Institute of Standards and Technology, Gaithersburg, MD
Scott, JA
National Institute of Standards and Technology, Gaithersburg, MD
Sikund, R
National Institute of Standards and Technology, Gaithersburg, MD
Troyer, R
National Institute of Standards and Technology, Gaithersburg, MD
Zarr, R
National Institute of Standards and Technology, Gaithersburg, MD
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Details
Developed by Committee: C16
Pages: 534–557
DOI: 10.1520/STP16368S
ISBN-EB: 978-0-8031-5174-1
ISBN-13: 978-0-8031-1420-3