ASTM-C1667 › Historical Revision Information
Standard Test Method for Using Heat Flow Meter Apparatus to Measure the Center-of-Panel Thermal Resistivity of Vacuum Panels
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Scope
1.1 This test method covers the measurement of steady-state thermal transmission through the center of a flat rectangular vacuum insulation panel using a heat flow meter apparatus.
1.2 Total heat transfer through the non-homogenous geometry of a vacuum insulation panel requires the determination of several factors, as discussed in Specification C 1484
1.3 This test method is based upon the technology of Test Method C 518
1.4 This test method shall be used in conjunction with Practice C 1045
1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Significance and Use
Heat flow meter apparatus are being used to measure the center-of-panel portion of a vacuum insulation panel, which typically has a very high value of thermal resistivity (that is, equal to or greater than 90 m-K/W). As described in Specification C 1484
Using a heat flow meter apparatus to measure the thermal resistivity of non-homogenous and high thermal resistance specimens is a non-standard application of the equipment, and shall only be performed by qualified personnel with understanding of heat transfer and error propagation. Familiarity with the configuration of both the apparatus and the vacuum panel is necessary.
The center-of-panel thermal transmission properties of evacuated panels vary due to the composition of the materials of construction, mean temperature and temperature difference, and the prior history. The selection of representative values for the thermal transmission properties of an evacuated panel for a particular application must be based on a consideration of these factors and will not apply necessarily without modification to all service conditions.
Keywords
effective thermal resistance (effective R-value); thermal conductivity; thermal resistance; vacuum insulation panel; Heat flow; Heat flow meter method; Thermal resistance/resistivity; Vacuum panels; ICS Number Code 91.060.10 (Walls. Partitions. Facades)
To find similar documents by ASTM Volume:
04.06 (Thermal Insulation; Building and Environmental Acoustics)
To find similar documents by classification:
91.060.10 (Walls. Partitions. Façades)
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Document Number
ASTM-C1667-09
Revision Level
2009 EDITION
Status
Superseded
Modification Type
Revision
Publication Date
April 1, 2009
Document Type
Test Method
Page Count
9 pages
Committee Number
C16.30