| Particle diameter (µm): | Setting Velocity (m/s): | Setting Velocity (mm/hr) |
| 0.05 | 3.85E-07 | 1.39 |
| 0.06 | 4.75E-07 | 1.71 |
| 0.08 | 6.69E-07 | 2.41 |
| 0.1 | 8.82E-07 | 3.18 |
| 0.15 | 1.50E-06 | 5.40 |
| 0.2 | 2.26E-06 | 8.14 |
| Typical Concept particle | ||
| 0.3 | 4.21E-06 | 15.16 |
| 0.4 | 6.76E-06 | 24.34 |
| 0.5 | 9.91E-06 | 35.68 |
| 0.6 | 1.37E-05 | 49.32 |
| 0.8 | 2.30E-05 | 82.80 |
| 1 | 3.48E-05 | 125.28 |
| 1.5 | 7.47E-05 | 268.92 |
| 2 | 1.30E-04 | 468.00 |
| 3 | 2.85E-04 | 1026.00 |
| 4 | 5.00E-04 | 1800.00 |
| 5 | 7.76E-04 | 2793.60 |
| Typical competitor particle size | ||
| 6 | 1.11E-03 | 3996.00 |
| 8 | 1.96E-03 | 7056.00 |
| 10 | 3.06E-03 | 11016.00 |
| 15 | 6.84E-03 | 24624.00 |
| 20 | 1.21E-02 | 43560.00 |
| 30 | 2.72E-02 | 97920.00 |
The terminal settling velocity of an aerosol or "artificial smoke" particle increases rapidly with particle size. The settling velocity is proportional to the square of the particle diameter, although sub micron particles, such as those produced by Concept systems require the use of slip correction factors.
Calculated for standard density spheres at 293 K [20° C] and 101 kPa (1 atm).
"Aerosol Technology", William C. Hinds, Wiley-Interscience, 1999
scroll through the slides,
click on a thumnail and
view the movies
Concept, the only smoke specialist within the Firebuy Training Fra... Read more >
Concept Smoke Screen have been nominated in 2 categories for the S... Read more >
> view allFollowing technical assistance provided by Concept to AWE appertaining to in situ HEPA filter testing
"May I take this opportunity to thank you for the service provided by Concept to AWE relating to the above subject,in relation to any technical queries that we have, the guidance given has proved to be of much use to both the previous and current management"