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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Work Item s – proposed revisions of this standard. Special characterization procedures are required for these tests. Detailed design of that type of apparatus is beyond the scope of this method. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided astn part of the standard. The general principles of the hot box method can be used to construct an apparatus to measure the heat flow through industrial systems at elevated temperatures.

Global Reach Intertek is the industry leader with over 42, people in 1, locations in over countries. You can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server. Detailed operating procedures, including design schematics and electrical drawings, shall be available for each apparatus to ensure adtm tests are in accordance c163 this test method.

Hybrid and Reflective Insulation Assemblies for Buildings. The building system wall, ceiling, roof, etc.

A need exists for accurate data on heat transfer through insulated structures at representative test conditions. Detailed designs conforming to this standard are not given but must be developed within the constraints of the general requirements. Already Subscribed to this document. The key to an accurate result is correctly measuring the heat input to the hot side and ensuring that all the astk goes from the hot side to the cold side and that none either leaks out of the Hot Box or bypasses the test specimen.

Whether your business is local or global, we can ensure your products meet quality, health, environmental, safety, and social accountability standards for virtually any market around the world. Some hot boxes are limited to planar or nearly planar 1c363.


Examples of analysis tools, concepts and procedures used in the design, construction, characterization, and operation of a hot box apparatus is given in Refs When constructed to measure heat transfer in the vertical direction, the hot box is used for testing roof, ceiling, floor, and other horizontal structures.

Practice C may be used as a guide for test specimen conditioning.

It’s easy to model one-dimensional conductive heat flow, but v1363 three-dimensional heat transfer is much more difficult and less reliable. Test apparatus designed and operated previously under Test Methods C and C will require aastm modifications to the calibration and operational procedures to meet the requirements of Test Method C Materials with a low thermal emittance surface have been used for many years to create reflective insulations that reduce the rate of heat flow across building envelopes.

Standards Subsctiption may be the perfect solution. By running multiple conditions, we develop a calibration curve and use it to provide accurate results. The energy input to the hot side is precisely measured for both the power to the heater and the power to the circulating fan. To learn more about how Hot Box testing can help your success in the market, contact us.

Need help or have a question? The heat flow meter reading is proportional to the amount of energy not going through the test specimen. Calculations of thermal resistance for enclosed reflective air spaces and current field data from Southeast Asia will be presented.

Direct current DC power is used to power both the heater and the fans as DC current provides a more axtm measurement of the power input. Assurance Testing Inspection Certification. Dynamic control strategies have included both periodic or non-periodic temperature cycles, for example, to follow a diurnal cycle. The direction of airflow motion under forced convective conditions shall be either perpendicular or parallel to the surface.

ASTM C1363

Formally confirming that your products and services meet all trusted external and internal standards. Many high performance wall systems now also have a layer c3163 rigid foam.

However, larger hot boxes have been used to characterize projecting skylights and attic sections. For the results to be representative of a building construction, only representative sections shall be tested. 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. Whatever the test orientation, the apparatus performance shall first be verified at that orientation with a specimen of known thermal resistance in place.


As such, the hot box is considered a asm 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. These can be used to determine energy losses through assemblies and the impact on overall building energy usage.

Large-Scale Hot Box

Subscription pricing is determined by: The operator shall note in the report any use of convection barriers. The test utilizes an apparatus known as a guarded hot box. Add to Alert PDF. A wide variety of materials and systems have been tested in our Hot Box ranging from ashm typical wood-framed wall, to a reflective system, to metal building roofs, to floor systems, and masonry systems.

Home Innovation ASTM C Hot Box | Home Innovation Research Labs

Approximately thermocouples measure air and surface temperatures on both sides of the Hot Box. Further considerations for such testing are given in Appendix X1.

Inspection Validating the specifications, value and safety of your raw materials, products and assets. These data show that reductions in heat transfer across the building enclosure can be effectively reduced by the use of enclosed reflective air spaces and attic radiant barriers. Further, some of 1c363 modeling parameters, such as contact resistance between the various layers, are difficult to establish accurately for modeling.

As such, 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.

Dynamic control strategies have included both periodic or non-periodic temperature cycles, for example, to follow a diurnal cycle. Hot Box testing is a reliable way to capture shareable, marketable data that is a superior to data gathered via modeling. As the voice of the U.