Fraunhofer Institute for Building Physics
Sound power in a wind tunnel
Acoustics
| Measurement | Sound power, wind and flow noise |
| Standard | DIN EN ISO 7235 |
| Measurement object | Façades, façade elements, fans, other components of HVAC systems (filters, heat exchangers, gratings, throttles, etc.) |
Technical data
| Test duct (L × H) | 12.0 × 0.5 m |
| Width of the test duct | 500 to 1300 mm (50 mm steps) |
| Fan | Flow rate ≤ 35 m³/s, pressure difference ≤ 2500 Pa |
| Max. size of test samples (L × H) | 6.000 × 0.498 m |
Special feature
| Type of test facility | Wind tunnel with closed loop ventilation duct |
More information
- Continuously adjustable air flow speed
- Uniform and noiseless air flow
- Sound power measurement in the receiving room out of the air flow
- Stationary measuring system for static and dynamic pressure
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