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The result of mechanical properties change of selected wood species after drying process under various parameters are presented. Wood species, namely pine (Pinus sylvestris L.) and beech (Fagus silvatica L.) from the northern part of Pomerania region in Poland, were subject of steam kiln-drying. The global elasticity modulus and bending strength for steam dried, air-steam mixture dried and air dried samples as reference were measured. It allowed to reveal the effect of wood stream, air-steam mixture and their temperature on mechanical properties of wood. It has been recognized that steam and air-steam mixture drying cause of the mechanical properties changes of analyzed wood species.
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Tom
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13--17
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Bibliogr. 10 poz.
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Bibliografia
- 1. SÁNDOR, P et al.: „Effect of high temperature treatment on the mechanical properties of birch (Betula papyrifera)”. Wood Science Technology, 2006.
- 2. OBATAYA, E et al.: „Effects of high temperature kiln drying on practical performance of japan cedar wood (Cryptomeria japonica) I: changes in hygroscopicity due to heating”. Journal of Wood Science. 2006.
- 3. PERRÉ, P.: „How to Get a Relevant Material Model for Wood Drying Simulation?” COST ACTION E15 - Advances in drying of Wood, 1st Workgroup in Edingurgh. 13-14th Oct 1999.
- 4. KEYLWERTH, R.: „Hochtemperatur-Trockenanlagen”. European Journal of Wood and Wood Products, 1952.
- 5. GARD W.F., RIEPEN M.: „Super-heated drying in Dutch operations”. Conference COST E53, Delft, the Netherlands, 29-30 October 2008.
- 6. LANGRISH, T. A. G., KHO, P. C. S., and KEEY, R. B.: „Experimental measurements and numerical simulation of local mass-transfer coefficients in timber kilns”. Drying Technology, 10, 753-781, 1992.
- 7. LANGRISH, T. A. G., KEEY, R. B., KHO, P. C. S., and WALKER, J. C. F.: „Time- dependent flow in arrays of timber boards: Flow visualization, mass-transfer measurements and numerical simulation”. Chemical Engineering Science, 48 (12), 2211-2223, 1993.
- 8. PANG S., SIMPSON I.G., HASLETT A.N.: „Cooling and steam conditioning after high- temperature drying of Pinus radiata board: experimental investigation and mathematical modeling”. Wood Science and Technology 35 (2001), Springer Verlag 2001, s.487-502
- 9. SUN, Z. F., CARRINGTON, C. G., and BANNISTER, P.: „Dynamic modeling of the wood stack in a wood drying kiln”. Chemical Engineering Research and Design, Transactions Institution of Chemical Engineers, Part A, 78, 107-117, 2000.
- 10. WIERZBOWSKI M., BARAŃSKI J., STĄSIEK J.: „Gas-steam mixture wood dryling”. COST E53 Meeting „Quality Control for Wood and Wood Products” : EDG Drying Seminar „Improvement of Wood Drying Quality by Conventional and Advanced Drying Techniques”, Bled, Slovenia, April 21st-23rd, 2009.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-f1e6c057-f03b-4f37-a925-a38e4730f016