- Author
-
Maref, W.
|
Lacasse, M. A.
|
Booth, D.
|
Nicholls, M.
|
O'Connor, T.
- Title
- Automated Weighing and Moisture Sensor System to Assess the Hygrothermal Response of Wood Sheathing and Combined Membrane-Sheathing Wall Components.
- Coporate
- National Research Council of Canada, Ottawa, Ontario
- Report
-
NRCC-45696,
- Distribution
- FOR MORE INFORMATION CONTACT: National Research Council of Canada, Institute for Research in Construction, Ottawa, Ontario, K1A 0R6, Telephone (613) 993-2607, Fax: (613) 952-7673, Email: Irc.Client-Services@nrc.ca Website: http://irc.nrc-cnrc.gc.ca/fulltext/nrcc45696/
- Book or Conf
- Building Physics, 11th Symposium. Proceedings. Volume 2. September 26-30, 2002,
Dresden, Germany,
595-604 p.,
2002
- Keywords
-
wood
|
walls
|
drying
|
experiments
|
heat transfer
|
mass transfer
|
moisture
- Identifiers
- benchmarking; building system; building envelope; wood product
- Abstract
- A weighing system was devised to conduct drying experiments on wood based products that could be used to compare results with those derived from simulation. The experiments were designed to retrieve data on the change in weight of specimens continuously over time from which the hygrothermal response of the specimens could then be determined. Specimens consisting of saturated wood sheathing board products of approximately 0.8-m by 1-m size and weighing 5-kg, were wrapped in different types of sheathing membrane and subjected to uniform environmental conditions in a climate chamber. A description is provided of the development of the weighing system, requirements for load cells and their calibration as well as technical features of the data acquisition system. Additionally, an example of a typical weight-in-time plot, obtained from one set of experiments, is given and compared to that derived from simulation. Experimental results are also provided that show the moisture content distribution within the sheathing board over time.