Research Article
Small-Scale Flat Plate Collectors for Solar Thermal Scavenging in Low Conductivity Environments
Table 1
Flow regimes versus Knudsen number.
| Knudsen number | Pressure (Torr) | Flow regime |
| Kn < 0 . 001 | P > 9 | Continuum flow | 0.001 < Kn < 0.1 | 0.09 < P < 9 | Slip flow | 0.1 < Kn < 10 | 0.0009 < P < 0.09 | Transitional flow | 10 < Kn | P < 0.0009 | Molecular flow |
|
|