Research Article
Effective Thermal Conductivity of Open Cell Polyurethane Foam Based on the Fractal Theory
Table 1
The comparative table between results of calculation and experiment.
| Sample | Density kg/m3 | Porosity % |
Fractal dimension |
Average temperature K | W/(m·K) | Difference % | | | | |
| 1 |
45 |
81 |
2.63 | 300 | 0.2804 | 0.0022 | 0.2826 | 0.280 | −0.93% | 355 | 0.2804 | 0.0028 | 0.2832 | 0.287 | 1.3% |
| 2 |
60 |
72 |
2.53 | 300 | 0.3186 | 0.0022 | 0.3208 | 0.330 | 2.8% | 355 | 0.3186 | 0.0028 | 0.3214 | 0.332 | 3.2% |
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