Abstract
A method is presented to calculate the relative vapor pressure of the internal environment of a flakeboard mat during hot-pressing. This technique uses measured temperature and gas pressure data from the mat. A mathematical relation for equilibrium moisture content as a function of temperature and relative vapor pressure is used to determine the transient equilibrium moisture content conditions that exist in the mat. Temperature and moisture contents of the wood component are predicted using a fundamental heat and mass transfer model for wood. Use of this method shows that a significant resistance to convective heat transfer at thje surface of a flake controls the heat and mass transfer between the wood flake and the internal environment. The temperature and moisture content of the wood component is not in equilibrium with the internal mat environment. Several assumptions were required to solve the model presented here. While this may limit the quantitative use of the model, the predicted trends are reasonable and do not conflict with the limited experimental data that are available.
| Original language | English (US) |
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| Pages | 262-263 |
| Number of pages | 2 |
| State | Published - Dec 1 1990 |
| Event | Proceedings of the 24th Washington State University International Particleboard/Composite Materials Symposium - Pullman, WA, USA Duration: Apr 3 1990 → Apr 5 1990 |
Other
| Other | Proceedings of the 24th Washington State University International Particleboard/Composite Materials Symposium |
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| City | Pullman, WA, USA |
| Period | 4/3/90 → 4/5/90 |
All Science Journal Classification (ASJC) codes
- Engineering(all)