Part of technical heat and moisture investigations of alternative insulation materials
The natural convection of two types of alternative insulation material has been measured in the convection apparatus of Department of Buildings and Energy. Measurements have been made on a type of sheep's wool (Herawool) with support fibres from the firm of Heraklith and a type of paper insulation (Ekofiber Vind) from Ekofiber. The density of the sheep's wool was 28 kg/m3 and the paper insulation was 65 kg/m3. The temperature on the hot side of the test specimen was 30°C and on the cold side ca. -10°C, that is a temperature difference over the test specimen of ca. 40 K.The measurements on the two alternative insulation materials have been compared to previous measurements on a traditional insulation material (Rockwool).Calculations of the convection conditions in the two materials have been made by means of a computer program CHConP. The measurements have been compared with these calculations.