Thermal Conductivity of Freely Patterned Pine and Spruce Needles

The aim of the study is to clarify the thermal conductivity coefficient of freely patterned pine and spruce needles. Heat flow measurements were made according to the two-factor experimental design and analysis of the full experimental design was made. The effect of moisture and coniferous tree species on the thermal conductivity coefficient was determined. The results show that different coniferous tree species needles hold different coefficients of thermal conductivity, which are influenced by various factors.