| Autor: |
Tensei Mizukami, Takeyoshi Tanaka |
| Rok vydání: |
2020 |
| Předmět: |
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| Zdroj: |
The Proceedings of 11th Asia-Oceania Symposium on Fire Science and Technology ISBN: 9789813291386 |
| DOI: |
10.1007/978-981-32-9139-3_41 |
| Popis: |
Most building materials more or less contain moisture. It is often observed at temperature measurements at fire resistance tests and also at numerical calculations of heat conduction in walls containing moisture that the temperature rises stagnate around 100 °C for some time periods. This temperature stagnation significantly contributes to the high fire resistance performance of some types of wall, e.g., gypsum board. In this paper, the existing moisture evaporation rate formula has been revisited and re-examined the heat continuity equation from the standpoint of the existence of heat loss not only for moisture evaporation but also by raising the temperature of the wall. It reduces the number of uncertainties in the heat continuity equation and allows us to skip the step of regression fits to numerical simulation. The new formula is compared to the numerical calculation, and the range of application is validated. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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