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2011 | 73 |

Tytuł artykułu

Effects of vacuum drying with infrared heating on some properties of wood

Warianty tytułu

PL
Wpyw suszenia próniowego z ogrzewaniem za pomoc podczerwieni na niektóre waciwoci drewna

Języki publikacji

EN

Abstrakty

EN
Effects of vacuum drying with infrared heating on some properties of wood . Drying of wood is one of the most important industrial processes in wood manufacturing. Mechanical properties of wood are affected from drying process. Heating method of the drying process is the most effective factor on the properties of end product. The aim of this study was to determine the effect of infrared heating in vacuum drying on the drying quality and mechanical properties of wood. For this purpose Oriental beech (Fagus orientalis L.) and Scots pine (Pinus Sylvestris L.) samples were dried by vacuum drying with infrared heating at 41+1 ºC temperatures and at 110+10 mbar ambient pressure for 48 hours. Final moisture content (MC) distributions, case hardening, modulus of elasticity (MOE), modulus of rupture (MOR) and compression strength (CS) of dried samples were determined. According to the results of the test, although average MC of the pieces met the requirements of the standard drying class, distribution of the individual MC did not meet the requirements in both pine and beech. Vacuum drying with infrared heating increased the MOE, MOR and CS of Scots pine and only CS of beech. MOE and MOR of beech were not affected from drying with infrared heating.
PL
Wpływ suszenia próżniowego z ogrzewaniem za pomocą podczerwieni na niektóre właściwości drewna. Metoda ogrzewania w procesie suszenia drewna ma duże znaczenie dla właściwości uzyskanego produktu. Celem pracy było określenie wpływu suszenia próżniowego z ogrzewaniem za pomocą podczerwieni na niektóre właściwości drewna. Stwierdzono między innymi, że ogrzewanie za pomocą podczerwieni powoduje wzrost modułu Younga, wytrzymałości na zginanie oraz ściskanie drewna sosny oraz wytrzymałości na ściskanie drewna buka.

Słowa kluczowe

Wydawca

-

Rocznik

Tom

73

Opis fizyczny

p.16-22,fig.,ref.

Twórcy

autor
  • Department of Furniture and Decoration Education, Technical Education Faculty, Karabuk University, 100. Yıl 78100- Karabük, Turkey
autor
  • Department of Furniture and Decoration Education, Technical Education Faculty, Karabuk University, 100. Yıl 78100- Karabük, Turkey
autor
  • Department of Furniture and Decoration Education, Technical Education Faculty, Karabuk University, 100. Yıl 78100- Karabük, Turkey

Bibliografia

  • 1. ABUBAKARI A. 2010: Radio frequency heating pre-treatment of sub-alpine fir to improve kiln drying. MSc Thesis, The University of British Columbia, Vancouver.
  • 2. AUDEBART P., TEMMAR A., HAMMOUM F., BASILICO C. 1997: Vacuum drying of oakwood :moisture, strains and drying process. Drying Technology 15(9): 2281-2302.
  • 3. BRUNNER R., 1993: The choice fort he future: Timber drying by vacuum or by conventional methods. Central Timber Journal 58:1-5.
  • 4. CHEN Z. 1997: Primary driving force in wood vacuum drying. Ph.D. Dissertation, Virginia Polytechnic Institute and State University, Virginia.
  • 5. DENIG J., WENGERT E.M., SIMPSON W.T. 2000: Drying hardwood lumber. Gen. Tech. Rep. FPL–GTR–118. Department of Agriculture, Forest Service, Forest Products Laboratory Madison, WI: U.S.
  • 6. HANSMANN C., STINGL R., PRIETO O.G., LOPEZ C.B., RESCH R. 2008: Highfrequency energy–assisted vacuum drying of fresh eucalyptus globulus. Drying Technology 26: 611–616.
  • 7. JOMAA W., BAIXERAS O. 1997: Discontinuous vacuum drying of oak wood: modelling and experimental investigations. Drying Technology 15(9): 2129-2144.
  • 8. JUNG H.S, EOM C.D, SO B.J. 2004: Comparison of vacuum drying characteristics of Radiata pine timber using different heating methods. Drying Technology 22(5):1005-1022.
  • 9. KOUMOUTSAKOS A. 2001: Modelling radio frequency/vacuum drying of wood. Ph.D. Dissertation, The University of British Columbia, Vancouver, Canada.
  • 10. LI X.J., ZHANG B.G., LI W.J. 2008: Microwave-vacuum drying of wood: Model formulation and verification. Drying Technology 26:1382-1387.
  • 11. MÖTTÖNEN V. 2006: Variation in drying behavior and final moisture content of wood during conventional low temperature drying and vacuum drying of betula pendula timber. Drying Technology 24: 1405–1413.
  • 12. PERRE P., MOSNIER S., TURNER I.W. 2004: Vacuum drying of wood with radiative heating: I. Experimental procedure. AIChE Journal 50(1): 97- 107.
  • 13. TASKINI A. 2007: Effect of drying methods on wood strength: A comparison between microwave, infrared, and convectional drying. Mech. & Aerospace Eng. J. 3(1):83-90.
  • 14. TS 2474, 1976: Wood - Determination of Ultimate Strength in Static Bending. Turkish Standards Institution, Ankara.
  • 15. TS 2478, 1976: Wood-Determination of Modulus of Elasticity in Static Bending. Turkish Standards Institution, Ankara.
  • 16. TS 2595, 1977: Wood-Determination of Ultimate Stress In Compression Parallel to Grain. Turkish Standards Institution, Ankara.
  • 17. TS EN, 14298, 2006: Sawn timber – Assessment of drying quality. Turkish Standards Institution, Ankara.
  • 18. TS ENV, 14464, 2005: Sawn timber – Method for assessment of case hardening. Turkish Standards Institution, Ankara.

Typ dokumentu

Bibliografia

Identyfikatory

Identyfikator YADDA

bwmeta1.element.agro-3761f5a1-a100-4922-887e-06fdbcaa8b34
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