ZEMCH 2019 International Conference Proceedings April.2020 | Page 302
Figure 1. Various kinds of insulations
The thermal conductivity of various insulations is shown in Table 1.
Table 1. Thermal conductivity of various insulations [3]
Kind of Insulation
Thermal Conductivity(W/mK)
Rock Wool
0.037~0.046
Glass Wool
0.034~0.045
Expanded Polystyrene Foam
0.036~0.043
Neopor
0.031~0.034
Extruded Polystyrene Foam
0.029~0.033
Urethane Foam
0.022~0.030
Phenolic Foam
0.019~0.035
Air (for Comparison)
0.023
Aerogel Blanket
0.013~0.015
Vacuum Insulation Panel
0.0021~0.0045
According to the thermal conductivity of insulation, its required thickness to meet the U value of
about 0.15W/m2K for zero energy buildings is different from 20mm to 400mm.
With low thermal conductivity, required properties for insulation are shown in Figure 2.
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