Abstract
The purpose of this paper is to investigate the moisture characteristics of spruce plywood used as an internal covering board, especially the ability of plywood to store and release moisture as the indoor relative humidity changes. In this paper, the moisture buffering capacity is measured by recording the change in mass of a test specimen when the air relative humidity is changed between 33% RH and 75% RH. The aim is to represent diurnal cycles in indoor humidity with 33% RH maintained for 16 hours and 75% RH maintained for 8 hours. Measurements are taken using three different apparatuses, which provide different convective transfer coefficients between the air and the plywood and the results are compared to a numerical model. The convection coefficients investigated range from natural convection in sealed, small jars to fully developed turbulent airflow over the plywood. The results show that the buffering capacity of plywood depends on the thickness of the plywood as well as the surface film coefficient.
| Original language | English |
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| Title of host publication | Proceedings of the 7th Symposium on Building Physics in the Nordic Countries |
| Pages | 124-131 |
| Volume | 1 |
| Publication status | Published - 2005 |
| MoE publication type | A4 Article in a conference publication |
| Event | 7th Symposium on Building Physics in the Nordic Countries - Reykjavik, Iceland Duration: 13 Jun 2005 → 15 Jun 2005 Conference number: 7 |
Conference
| Conference | 7th Symposium on Building Physics in the Nordic Countries |
|---|---|
| Country/Territory | Iceland |
| City | Reykjavik |
| Period | 13/06/05 → 15/06/05 |
Keywords
- moisture buffering capacity
- spruce plywood
- convective transfer coefficients
- sheathing