| Source: | National Institute of Standards and Technology |
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| Date: | 4/1/94 Record No.: 10072 |
| Contact: | Hunter Fanney, 301-975-5864 |
Insulation R-Value Measurement
Develop measurement standards and technniques, and certify NAHB measurements. New higher insulation value materials can be harder to measure accurately; for example, gas-filled panels have an R-value of about 15/inch, powder evacuated panels 25/inch, and vacuum stainless steel is estimated theoretically to reach as high as 100/inch. A large calibrated hot box can accommodate actual size wall systems for detailed performance measurements vs. temperature and humidity, including weather cycles.
| Topics: | BUILDINGS |
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