This standard is issued under the fixed designation C ; the number immediately 1 This test method is under the jurisdiction of ASTM Committee C- 16 on. ASTM C () Standard Test Method for Thermal Performance of Building Materials and Envelope Assemblies by Means of a Hot Box Apparatus. Annual. Our calibrated hot box is one of the largest in the country accepting test assemblies up to 9’x16′. Its design allows any orientation from fully vertical to fully .
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Any exterior wall or roof assembly, including steel stud wall systems, insulated concrete forms, tilt-up concrete walls, and insulated metal panels.
If this is not possible, horizontal convection barriers shall be installed inside the specimen air cavities at the metering chamber boundaries to prevent air exchange between the metering and guarding areas.
The energy input to the hot side is precisely measured for both the power to the heater and the power to the circulating fan.
Home Innovation ASTM C Hot Box | Home Innovation Research Labs
satm As c1633, the hot box is considered a primary method and the uncertainty of the result is analyzed by direct evaluation of the component measurement uncertainties of the instrumentation used in making the measurements. We have no amendments or corrections for this standard. This test method applies to building structures or composite assemblies of building materials for which it is possible to build a representative specimen that fits the test apparatus.
These panels, or representative sections of the panels, have had their thermal performance measured on other devices that are directly traceable or have been favorably compared to a national standards laboratory.
Detailed design of that type of apparatus is beyond the scope of this method. This standard is also available to qstm included in Standards Subscriptions. The test specimen shall duplicate the framing geometry, material composition and installation practice, and orientation of construction see Section 7.
Additional characterization is required to insure that all aspects of the heat flow and storage are accounted for during the test. It is unlikely that the test conditions will exactly duplicate in-use conditions and the user of the test results must be cautioned of possible significant differences.
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Examples of analysis tools, concepts and procedures used in the design, construction, characterization, and operation of a hot box apparatus is given in Refs To gain this final confidence in the test result, it is necessary to benchmark the overall result of the hot box apparatus by performing measurements on specimens having known heat transfer values and comparing those results to the expected values.
Subscription pricing is determined by: Further considerations for such testing are given in Appendix X1.
As we know from the Second Law of Thermodynamics, energy moves from hot towards cold. Wstm infiltration or moisture migration can alter the net astj transfer. Additional characterization is required to insure that all aspects of the heat flow and storage are accounted for during the test.
A wide variety of materials and systems have been tested in our Hot Box ranging from a typical wood-framed wall, to a reflective system, to metal building roofs, to floor systems, and masonry systems. Evaluating how your products and services meet and exceed quality, c133, sustainability and performance standards.
Note that the use of Test Method C or similar apparatus creates additional uncertainty since those devices are calibrated using transfer standards or standard reference materials.
We’d be happy to work with you to conduct custom thermal testing for your residential building system.
Large-Scale Hot Box
For the results to be representative of a building construction, only representative sections shall be tested. By performing this benchmarking process, the hot box operator is able to develop the additional equations that predict the magnitude of the corrections to the net heat flow through axtm specimen that account for any hot box wall loss and flanking loss.
Further considerations for such testing are given in Appendix X1. It is the responsibility of the user of this asmt to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Other ASTM standards such as Test Methods C and C provide data on homogeneous c13363 bounded by temperature controlled flat impervious plates. The building system wall, ceiling, roof, etc.
Journal of Power and Energy EngineeringVol. Complicated interactions and dependence upon many variables, coupled with only a limited experience in testing under such conditions, have made it inadvisable to include this type testing in this standard. Some hot boxes are limited to planar or nearly planar specimens. The direction of airflow motion under forced convective conditions shall be either perpendicular or parallel to the surface.
Work Item s – proposed revisions of this standard. By performing this benchmarking process, the hot box operator is able to develop the additional equations that predict the magnitude of the corrections to the net heat flow through the specimen that account for any hot box wall loss and flanking loss. The operation of a hot box apparatus requires a significant number of fundamental measurements of temperatures, areas and power.
The preconditioning parameters shall be chosen to accurately reflect the test samples intended use and shall be documented in the report.