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

SEDL / STP / STP660-EB / STP35736S

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

Pelanne, CM
Senior research specialist, Johns-Manville Research and Development Center, Denver, Colo.

Pages: 11 Published: Jan 1978

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Abstract

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.

Keywords:
test data, thermal conductivity, thermal performance, insulations, thermal, infrared radiation, thickness effects, temperature effects, heat flow mechanisms

Paper ID: STP35736S
Committee/Subcommittee: C16.30
DOI: 10.1520/STP35736S

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