Table 5.
Sample Code | Mass per Unit Area *, g/m2 | Thickness D *, mm | Air Permeability *, mm/s | Thermal Resistance Rct *, m2K/W | Heat Transfer Coefficient U, W/m2K | Thermal Conductivity Coefficient λ, W/m K |
---|---|---|---|---|---|---|
C | 372 ± 5 | 2.7 ± 0.1 | 618 ± 15 | 0.063 ± 0.009 | 15.87 | 0.043 |
C1 | 557 ± 8 | 2.6 ± 0.1 | 414 ± 30 | 0.072 ± 0.010 | 13.89 | 0.036 |
C2 | 401 ± 6 | 2.6 ± 0.1 | 636 ± 15 | 0.064 ± 0.009 | 15.62 | 0.041 |
C3 | 375 ± 5 | 2.7 ± 0.1 | 641 ± 28 | 0.065 ± 0.009 | 15.34 | 0.042 |
C4 | 375 ± 5 | 2.7 ± 0.1 | 629 ± 17 | 0.068 ± 0.010 | 14.71 | 0.040 |
Notes: * The reported uncertainty is based on a standard uncertainty multiplied by a coverage factor k = 2, which provides a level of confidence of approximately 95%; U, λ values are presented without uncertainty as they were estimated from Rct and D measurements.