Studies of water vapor transport and sorption in wood
Author
Summary, in English
1. A description of the instrumentation and its performance characteristics.
2. Some first results on sorption in spruce wood. Non-Fiction behavior is seen above 75% relative humidity.
3. In this part the main experimental results are presented. At lower relative humidity (absorption from 54 to 75%) the normally used Fiction approach can describe the major part of the sorption process. At higher relative humidity (from 75 to 84%), however, the major part of the sorption is very slow and governed by non-Fiction effects, which are not dependent on direction of flow, sample size or wood species. The slow sorption of water vapor in the cell wall is believed to cause this phenomenon.
4. A test of the effect of different disturbances (e.g. the surface resistance) on the normally used methods of evaluating sorption measurements is presented.
5. In this paper problems concerning measurements of surface mass transfer coefficients are discussed.
6. A discussion of how non-Fickian behavior in wood could be measured and modelled.
7. An error analysis of a transient sorption measurement is developed.
8. The error analysis is applied on two measurements.
Department/s
Publishing year
1993
Language
English
Publication/Series
Report TVBM
Volume
1013
Full text
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Document type
Dissertation
Publisher
Division of Building Materials, LTH, Lund University
Topic
- Materials Engineering
Keywords
- evaluation
- measurements
- non-Fickian behavior
- absorption
- sorption method
- transient
- unsteady-state
- wood
- sorption
- surface mass transfer coefficient
- water vapor
- error analysis
Status
Published
Supervisor
ISBN/ISSN/Other
- ISSN: 0348-7911
- TVBM-1013
Defence date
14 May 1993
Defence time
10:15
Defence place
Sektionen för väg- och vattenbyggnad, sal V:A, tekniska fakulteten vid Lunds universitet
Opponent
- Patrick Perre