Preprint Article Version 1 This version is not peer-reviewed

Heat and Mass Transfer Properties of Sugar Maple Wood Treated by the Thermo-Hygro-Mechanical Densification Process

Version 1 : Received: 10 July 2018 / Approved: 10 July 2018 / Online: 10 July 2018 (14:44:48 CEST)

How to cite: Fu, Q.; Cloutier, A.; Laghdir, A. Heat and Mass Transfer Properties of Sugar Maple Wood Treated by the Thermo-Hygro-Mechanical Densification Process. Preprints 2018, 2018070184 (doi: 10.20944/preprints201807.0184.v1). Fu, Q.; Cloutier, A.; Laghdir, A. Heat and Mass Transfer Properties of Sugar Maple Wood Treated by the Thermo-Hygro-Mechanical Densification Process. Preprints 2018, 2018070184 (doi: 10.20944/preprints201807.0184.v1).

Abstract

This study investigated the evolution of density, gas permeability and thermal conductivity of sugar maple wood during the thermo-hygro-mechanical densification process. The results suggested that the oven-dry average density of densified samples was significantly higher than that of the control samples. However, the oven-dry density did not show a linear increase with the decrease of wood samples thickness. The radial intrinsic gas permeability of the control samples was 5 to 40 times higher than that of densified samples, which indicated that the void volume of wood was reduced notably after the densification process. The thermal conductivity increased by 0.5 - 1.5% per percent increase of moisture content for densified samples. The thermal conductivity of densified wood was lower than that of the control samples. The densification time had significant effects on the oven-dry density and gas permeability. Both the densification time and the moisture content had significant effects on thermal conductivity, but their interaction effect was not significant.

Subject Areas

density; gas permeability; thermal conductivity; densification

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