Abstract
Due to the length of the thermal networks in Russia, the quality of the insulating materials of the pipeline systems is essential in the transportation of thermal energy. Incorrect thermal characteristics assessment of the heating networks insulating materials can lead to significant energy losses.In this paper, the thermal conductivity of rock wool at a temperature of 25 С is determined by an experimental method. The density of the samples was 80 and 105 kg/m3. The thermal conductivity of rock wool was obtained on dry samples and with a moisture content of 5% by weight. The thermal conductivity of the insulation was obtained using the guarded hot plate and guarded hot pipe method. The results obtained by two different methods were compared with each other. Differences between rock wool thermal conductivity obtained by two methods were 3 and 9% at a density of 80 and 105 kg/m3. The differences were 8 and 6% for wetted insulation at a density of 80 and 105 kg/m3, respectively, while the thermal conductivity increased to 94%.
Published Version
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