Fraunhofer Institute for Building Physics
Insertion loss at high temperatures
| Measurement | Insertion loss, sound power |
| Standard | DIN EN ISO 7235 |
| Measurement object | Exhaust gas silencers, components of exhaust gas systems, silencers in duct systems with high temperature |
Technical data
| Test duct | 2 m length, connection 200 mm diameter |
| Fan | Flow rate ≤ 450 m³/h |
| Heater battery | Power 2 kW, max. temperature in the duct +130 °C |
| Size of test samples | Max. 1.8 m length, max. 400 mm diameter |
Special features
| Type of test facility | Closed loop duct system |
| Measuring duct | Sound source, anechoic terminations |