SAF SA 1-Sound Attenuators Resonating Type

     
Description:

The attenuation effect is due to resonance and absorption. Energy-efficient due aerodynamically profiled frame. Hygienically safe due to bio-soluble absorption material. Absorption material is inert to fungal and bacterial growth. For use in zones 1 and 2 as well as in zones 21 and 22 according to EU Directive 94/9/EC (ATEX). Absorption material is non-combustive of fire rating A1 according to EN13501. Operating temperatures up to 100 °C.

Application:

• Splitter sound attenuators of Type MSA used for the reduction of fan noise and air-regenerated noise in air conditioning systems
• Attenuation effect due to absorption and resonance – Broadband attenuation even in the low-frequency range of critical fan noise
• Hygiene tested and certified to VDI 6022
• For use in potentially explosive atmospheres (ATEX), zones 1, 2, 21 and 22 (outside)

Construction:

• Casing frame, splitter frame, center mullion of material: Stainless steel, Galvanized steel (3 mm thickness)
• Absorption material: Mineral wool
• Absorption material faced with glass fiber fabric for protection against airflow erosion
• Perforated sheet metal (1mm thickness) to protect the adsorption media(Optional)
• Splitter thickness of 100 mm
• Flange width 30 mm

Aerodynamically profiled splitter frame (radius > 15 mm) that enables a reduction of turbulence both upstream and downstream; frame with grooves for increased rigidity.

Functional Description:

The attenuation effect of the splitters is due to absorption and resonance. The splitters have a mineral wool infill as absorption material. Part of the splitter surface that runs parallel to the airflow is covered with resonating panels. These panels start oscillating due to the sound (resonance) and hence absorb sound energy. Resonance works best in the frequency range of critical fan noise. There is a higher attenuation across a wider frequency range when compared to mere absorption splitters. Up to 30 % lower differential pressure. Energy-efficient and/or space-saving due to aerodynamically profiled frame.