SYMPOSIA PAPER Published: 01 January 1978
STP35736S

Does the Insulation Have a Thermal Conductivity? The Revised ASTM Test Standards Require an Answer

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An improved understanding of the heat flow processes in thermal insulations has mandated a conceptual revision of the basic ASTM test methods [ASTM Standard Test Method for Steady-State Thermal Transmission Properties by Means of the Guarded Hot Plate (C 177-76), ASTM Book of Standards, Part 18, and ASTM Standard Test Method for Steady-State Thermal Transmission Properties by Means of the Heat Flow Meter (C 518-76), ASTM Book of Standards, Part 18] applicable to heat transmission through thermal insulations. The test methods as previously written allowed almost exclusively the measurement of thermal conductivity, a property which thermal insulations, for the most part, do not have. The author discusses the factors which have prompted the change.

Author Information

Pelanne, CM
Johns-Manville Research and Development Center, Denver, Colo.
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Details
Developed by Committee: C16
Pages: 60–70
DOI: 10.1520/STP35736S
ISBN-EB: 978-0-8031-4729-4
ISBN-13: 978-0-8031-0589-8