THERMAL CONDUCTIVITY OF SOLID WOOD PANELS MADE FROM HEAT-TREATED SPRUCE AND LIME WOOD STRIPS

Abstract

The paper presents the results of an experimental research performed with spruce (Picea abies L.) and lime (Tilia cordata) wood originating from the Stroesti-Arges region in Romania. Solid wood panels were manufactured from heat-treated strips, and also from untreated strips, as controls. The thermal conductivity (λ) of the panels was measured on a HFM 436/6/1 Lambda equipment at a temperature difference of 30°C between the cold and the hot plate. The results showed that the panels made from heat-treated wood strips had by 13% lower values of λ in case of spruce and by 6% lower values in case of lime and thus better heat-insulating properties than the panels made from untreated wood of the same species. With λ values around 0.07-0.08 W/m⋅K, 20mm thick solid wood panels made from heat-treated spruce and lime strips are comparable to wool from the viewpoint of the thermal insulating capacity.

Keywords

• solid wood panels
• thermal insulation
• thermal conductivity
• heat-treatd spruce
• heat-treated
• heat-treated lime