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Vacuum press drying studies on two fast-growing Indian wood species

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Abstract

Two fast-growing Indian species, Melia composita Benth. and Eucalyptus tereticornis Sm., which have different sets of physical properties, were dried together in a vacuum press dryer (VPD) under two drying conditions, i.e., above boiling point (ABP) and below boiling point (BBP). The ABP and BBP conditions were maintained by keeping the temperature constant at 75 °C and maintaining two pressure levels: 300 mm of Hg (ABP) and 450 mm of Hg (BBP). In order to understand pressure conditions at the core during vacuum drying, a cylindrical brass pipe was inserted in both wood cores and attached with pressure gauges placed outside of the VPD. The results indicate that the Melia wood core attained equilibrium pressure immediately with the pressure of VPD, while Eucalyptus attained it very slowly, reaching equilibrium at later stages of drying when cracks and checks advanced to the core. The drying rate was higher for Melia than Eucalyptus under both drying conditions. The drying rate of Melia (ABP) was higher than Melia (BBP), however, the drying rate for Eucalyptus (ABP) was not significantly different from the BBP drying rate.

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References

  • Bahri S, Kumar S (1982) Permeability studies on Eucalyptus hybrid. J Timber Dev Assoc (India) 28(3):32–40

    Google Scholar 

  • Chen Z, Lamb FM (1995) The concept of boiling front in vacuum drying. In: Vacuum drying of Wood’1995, Slovakia, pp 110–116

  • Haar L, Gallagher JS, Kell GS (1984) NBS/NRC steam tables: thermodynamic and transport properties and computer programs for vapour and liquid states of water in SI units. Hemisphere Pub. Corp, Washington, DC

    Google Scholar 

  • Kumar S, Kelkar BU, Mishra AK, Jena SK (2016) Study of variability in some physical properties of plantation grown progenies of Melia composite Willd.and determination of a kiln drying schedule. J For Res (in press)

  • Moyne C, Martin M (1992) Influence of a total pressure gradient in gaseous phase on drying with particular reference to wood. Int Heat Mass Transf 25(12):1839–1845

    Article  Google Scholar 

  • Pande PK, Aziz M, Uniyal S, Dhiman RC (2012) Variation in wood anatomical properties and specific gravity in relation to sexual dimorphism in Populus. Curr Sci 102(11):1580–1585

    Google Scholar 

  • Perre P, Mosnier S, Turner IW (2004) Vacuum drying of wood with radiative heating: I. Exp Proced AICHE J 50(1):97–107

    Article  CAS  Google Scholar 

  • Rajpoot SS, Shukla NK, Gupta VK, Jain JD (1996) Timber mechanics-strength classification and grading of timber. ICFRE, New Forest, p 189

    Google Scholar 

  • Sasaki K, Kawabe J, Mori M (1987) Vacuum drying of wood at high frequency (II), pressure within the lumber during evacuation and drying. Bull Kyushu Univ For 57:245–265

    Google Scholar 

  • Srivani P, Rao RV (2015) Wood anatomical structure of the clones of Eucalyptus Tereticornis Sm. (Mysore Gum). Int J Sci Technol Res 4(1):156–159

    Google Scholar 

  • Swaminathan C, Rao RV, Shashikala S (2012) Preliminary evaluation of variations in anatomical properties of Melia dubia Cav. wood. Int J Biol Sci 1(4):1–6

    Google Scholar 

Download references

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Correspondence to Shailendra Kumar.

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Project funding: This work was carried out as part of M.Sc. dissertation under financial support from “Forest Research Institute (Deemed) University, Dehradun (India)”.

The online version is available at http://www.springerlink.com

Corresponding editor: Tao Xu.

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Kumar, S., Topare, R.R. & Nagar, J. Vacuum press drying studies on two fast-growing Indian wood species. J. For. Res. 29, 869–874 (2018). https://doi.org/10.1007/s11676-017-0474-8

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  • DOI: https://doi.org/10.1007/s11676-017-0474-8

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