Skip to main content
Erschienen in: Wood Science and Technology 8/2006

01.12.2006 | ORIGINAL

Inverse determination of thermal conductivity in frozen lumber

verfasst von: Liping Cai, Peter Garrahan

Erschienen in: Wood Science and Technology | Ausgabe 8/2006

Einloggen

Aktivieren Sie unsere intelligente Suche, um passende Fachinhalte oder Patente zu finden.

search-config
loading …

Abstract

An inverse determination was applied to estimate the thermal conductivity in frozen hemlock (T. heterophylla) lumber. Temperatures at various positions in a piece of lumber were accurately determined during the heating process and the thermal conductivity was calculated using the finite difference method. The calculating thermal conductivity can be utilized to estimate the heating rate in frozen wood. The results of this study indicate that the thermal conductivity increases with moisture content in frozen lumber.

Sie haben noch keine Lizenz? Dann Informieren Sie sich jetzt über unsere Produkte:

Springer Professional "Technik"

Online-Abonnement

Mit Springer Professional "Technik" erhalten Sie Zugriff auf:

  • über 67.000 Bücher
  • über 390 Zeitschriften

aus folgenden Fachgebieten:

  • Automobil + Motoren
  • Bauwesen + Immobilien
  • Business IT + Informatik
  • Elektrotechnik + Elektronik
  • Energie + Nachhaltigkeit
  • Maschinenbau + Werkstoffe




 

Jetzt Wissensvorsprung sichern!

Springer Professional "Wirtschaft+Technik"

Online-Abonnement

Mit Springer Professional "Wirtschaft+Technik" erhalten Sie Zugriff auf:

  • über 102.000 Bücher
  • über 537 Zeitschriften

aus folgenden Fachgebieten:

  • Automobil + Motoren
  • Bauwesen + Immobilien
  • Business IT + Informatik
  • Elektrotechnik + Elektronik
  • Energie + Nachhaltigkeit
  • Finance + Banking
  • Management + Führung
  • Marketing + Vertrieb
  • Maschinenbau + Werkstoffe
  • Versicherung + Risiko

Jetzt Wissensvorsprung sichern!

Literatur
Zurück zum Zitat Cai L (2005) Determination of diffusion coefficients for sub-alpine fir. Wood Sci Technol 39:153–162CrossRef Cai L (2005) Determination of diffusion coefficients for sub-alpine fir. Wood Sci Technol 39:153–162CrossRef
Zurück zum Zitat Chen HT, Lin JY, Wu CH, Huang CH (1996) Numerical algorithm for estimating temperature-dependent thermal conductivity. Numerical Heat Transfer, Part B 29:509–522 Chen HT, Lin JY, Wu CH, Huang CH (1996) Numerical algorithm for estimating temperature-dependent thermal conductivity. Numerical Heat Transfer, Part B 29:509–522
Zurück zum Zitat Chudinov BS (1968) Theory of thermal treatment of wood (In Russ). Izdatel’stvo "Nauka”, Moscow, Akad Nauk SSSR 37:70–104 Chudinov BS (1968) Theory of thermal treatment of wood (In Russ). Izdatel’stvo "Nauka”, Moscow, Akad Nauk SSSR 37:70–104
Zurück zum Zitat Incropera FP, DeWitt DP (1996) Fundamentals of heat and mass transfer. Wiley, New York, p 838 Incropera FP, DeWitt DP (1996) Fundamentals of heat and mass transfer. Wiley, New York, p 838
Zurück zum Zitat Kanter KR (1957) The thermal properties of wood (In Russian). Derev Prom 6(7):17–18 Kanter KR (1957) The thermal properties of wood (In Russian). Derev Prom 6(7):17–18
Zurück zum Zitat Kreith F, Bohn MS (2001) Principles of heat transfer. Sixth edition. Thomson Learning. Australia, Canada. pp.A51–A53 Kreith F, Bohn MS (2001) Principles of heat transfer. Sixth edition. Thomson Learning. Australia, Canada. pp.A51–A53
Zurück zum Zitat Liu JY, Simpson WT, Verrill SP (2001) An inverse moisture diffusion algorithm for the determination of diffusion coefficient. Drying Tech 19(8):1555–1568CrossRef Liu JY, Simpson WT, Verrill SP (2001) An inverse moisture diffusion algorithm for the determination of diffusion coefficient. Drying Tech 19(8):1555–1568CrossRef
Zurück zum Zitat Pordage LJ, Langrish TAG (1999) Simulation of the effect of air velocity in the drying of hardwood timber. Drying Tech 17(1&2):237–255 Pordage LJ, Langrish TAG (1999) Simulation of the effect of air velocity in the drying of hardwood timber. Drying Tech 17(1&2):237–255
Zurück zum Zitat Siau JF (1995) Wood: influence of moisture on physical properties. Department of Wood Science and Forest Products, Virginia Polytechnic Institute and State University pp. 87 and 94 Siau JF (1995) Wood: influence of moisture on physical properties. Department of Wood Science and Forest Products, Virginia Polytechnic Institute and State University pp. 87 and 94
Zurück zum Zitat Steinhagen HP (1977) Thermal conductive properties of wood, green or dry, from −40 to +100°C: a literature review. USDA Forest Service General Technical Report FPL-9, Forest Products Laboratory, Madison Steinhagen HP (1977) Thermal conductive properties of wood, green or dry, from −40 to +100°C: a literature review. USDA Forest Service General Technical Report FPL-9, Forest Products Laboratory, Madison
Zurück zum Zitat Steinhagen HP, Lee HW (1988) Enthalpy method to compute radial heating and thawing of logs. Wood Fiber Sci 20(4):415–421 Steinhagen HP, Lee HW (1988) Enthalpy method to compute radial heating and thawing of logs. Wood Fiber Sci 20(4):415–421
Zurück zum Zitat Yeung WK, Lam TT (1996) Second-order finite difference approximation for inverse determination of thermal conductivity. Int J Heat Mass transfer 39(17):3685–3693CrossRef Yeung WK, Lam TT (1996) Second-order finite difference approximation for inverse determination of thermal conductivity. Int J Heat Mass transfer 39(17):3685–3693CrossRef
Metadaten
Titel
Inverse determination of thermal conductivity in frozen lumber
verfasst von
Liping Cai
Peter Garrahan
Publikationsdatum
01.12.2006
Verlag
Springer-Verlag
Erschienen in
Wood Science and Technology / Ausgabe 8/2006
Print ISSN: 0043-7719
Elektronische ISSN: 1432-5225
DOI
https://doi.org/10.1007/s00226-006-0079-4

Weitere Artikel der Ausgabe 8/2006

Wood Science and Technology 8/2006 Zur Ausgabe