Table 4.
The thermal properties of the air gap.
| Density (kg/m3) | 1.079 |
| Specific heat (J/kgK) | 1008 |
| Thermal conductivity (W/m·°C) | 0.02822 |
| Kinematic viscosity (m2/s) | 17.44 × 10−6 |
| Coefficient of thermal expansion (1/°C) | 0.003104 |
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