ASTM C1043

Standard Practice for Guarded-Hot-Plate Design Using Circular Line-Heat Sources

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Organization: ASTM
Publication Date: 1 March 2019
Status: active
Page Count: 16
ICS Code (Heat. Calorimetry): 17.200.10
scope:

This practice covers the design of a circular line-heat-source guarded hot plate for use in accordance with Test Method C177.

NOTE 1-Test Method C177 describes the guarded-hot-plate apparatus and the application of such equipment for determining thermal transmission properties of flat-slab specimens. In principle, the test method includes apparatus designed with guarded hot plates having either distributed- or line-heat sources.

The guarded hot plate with circular line-heat sources is a design in which the meter and guard plates are circular plates having a relatively small number of heaters, each embedded along a circular path at a fixed radius. In operation, the heat from each line-heat source flows radially into the plate and is transmitted axially through the test specimens.

The meter and guard plates are fabricated from a continuous piece of thermally conductive material. The plates are made sufficiently thick that, for typical specimen thermal conductances, the radial and axial temperature variations in the guarded hot plate are quite small. By proper location of the line-heat source(s), the temperature at the edge of the meter plate is made equal to the mean temperature of the meter plate, thus facilitating temperature measurements and thermal guarding.

The line-heat-source guarded hot plate has been used successfully over a mean temperature range from − 10 to + 65°C, with circular metal plates and a single line-heat source in the meter plate. The chronological development of the design of circular line-heat-source guarded hot plates is given in Refs (1-9).2

NOTE 2-Detailed drawings and descriptions for the construction of two line-heat-source guarded-hot-plate apparatuses are available in the adjunct.3

This practice does not preclude (1) lower or higher temperatures; (2) plate geometries other than circular; (3) line-heat-source geometries other than circular; (4) the use of plates fabricated from ceramics, composites, or other materials; or (5) the use of multiple line-heat sources in both the meter and guard plates.

The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

2 The boldface numbers in parentheses refer to a list of references at the end of this practice.

3 Available from ASTM Headquarters. Order Adjunct: ADJC1043.

Document History

ASTM C1043
March 1, 2019
Standard Practice for Guarded-Hot-Plate Design Using Circular Line-Heat Sources
This practice covers the design of a circular line-heat-source guarded hot plate for use in accordance with Test Method C177. NOTE 1—Test Method C177 describes the guarded-hot-plate apparatus and...
March 1, 2016
Standard Practice for Guarded-Hot-Plate Design Using Circular Line-Heat Sources
This practice covers the design of a circular line-heatsource guarded hot plate for use in accordance with Test Method C177. NOTE 1—Test Method C177 describes the guarded-hot-plate apparatus and the...
September 1, 2006
Standard Practice for Guarded-Hot-Plate Design Using Circular Line-Heat Sources
This practice covers the design of a circular line-heatsource guarded hot plate for use in accordance with Test Method C177. NOTE 1—Test Method C177 describes the guarded-hot-plate apparatus and the...
September 1, 2006
Standard Practice for Guarded-Hot-Plate Design Using Circular Line-Heat Sources
This practice covers the design of a circular line-heatsource guarded hot plate for use in accordance with Test Method C 177. NOTE 1—Test Method C 177 describes the guarded-hot-plate apparatus and...
September 10, 1997
Standard Practice for Guarded-Hot-Plate Design Using Circular Line-Heat Sources
1. Scope 1.1 This practice covers the design of a circular line-heat-source guarded hot plate for use in accordance with Test Method C 177. NOTE 1--Test Method C 177 describes the guarded-hot-plate...
September 10, 1997
Standard Practice for Guarded-Hot-Plate Design Using Circular Line-Heat Sources
This practice covers the design of a circular line-heat-source guarded hot plate for use in accordance with Test Method C 177. NOTE 1 - Test Method C 177 describes the guarded-hot-plate apparatus and...
January 1, 1996
Standard Practice for Guarded-Hot-Plate Design Using Circular Line-Heat Sources
A description is not available for this item.
June 30, 1989
STANDARD PRACTICE FOR DETERMINATION OF HOT-PLATE TEMPERATURE WHEN USING A LINE SOURCE HEATER IN THE GUARDED-HOT-PLATE APPARATUS FOR MEASUREMENT OF STEADY-STATE THERMAL TRANSMISSION PROPERTIES
A description is not available for this item.
October 22, 1985
STANDARD PRACTICE FOR DETERMINATION OF HOT- PLATE TEMPERATURE WHEN USING A LINE SOURCE HEATER IN THE GUARDED- HOT-PLATE APPARATUS FOR MEASUREMENT OF STEADY- STATE THERMAL TRANSMISSION PROPERTIES
A description is not available for this item.

References

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