| 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
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> view allAfter using the Colt 4 Turbo and Spirit 900 smoke generators and attending Concept's complimentary preventative maintenance course:
"We use smoke generators for fire simulations and positive pressure ventilation training for approx 10 hours per week. The Smoke adds realistic conditions for Fire Fighters to train in but with safety in mind. This has been a very useful course, full of practical information and help for the maintenance and operation of the smoke generators. It was a very useful opportunity to meet the company and to have face to face contact. Everyone was very helpful."