Table 9
Characteristics of long fibers and low-density insulation blocks, and comparison with other insulating materials.
| Material | Cohesion1 | Machinability1 | Density (kg/m3) | Thermal conductivity (mW/m K) | Thermal resistance (m2 K/W)2 |
|---|---|---|---|---|---|
| Insulating materials from this study | |||||
| Long fibers in bulk | n.a. | n.a. | 65.0 ± 0.43 | 47.7 ± 0.2 | 1.05 ± 0.00 |
| IB1 | 1 | 1 | 95.0 ± 3.0 | n.d. | n.d. |
| IB2 | 2 | 2 | 107.4 ± 1.7 | n.d. | n.d. |
| IB3 | 4 | 4 | 128.0 ± 0.3 | 48.8 ± 0.5 | 1.03 ± 0.01 |
| IB4 | 4 | 4 | 134.5 ± 5.5 | 57.6 ± 0.7 | 0.87 ± 0.01 |
| Conventional insulating materials (Laborel-Préneron et al., 2022) | |||||
| Expanded polystyrene | n.a. | n.a. | 20.0 | 32.0 | 1.56 |
| Glass wool | n.a. | n.a. | 27.5 | 35.0 | 1.43 |
| Rock wool | n.a. | n.a. | 35.0 | 38.0 | 1.32 |
| Cellulose wadding | n.a. | n.a. | 50.0 | 38.0 | 1.32 |
| Innovative bio-based materials recently developed at lab scale | |||||
| Sunflower pith block (Verdier et al., 2020) | 5 | 5 | 43.0 | 39.0 | 1.28 |
| Coriander straw block (Uitterhaegen et al., 2020) | 4 | 4 | 155.0 | 55.6 | 0.90 |
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