Noise pollution in hospitals, offices, or luxury hotels isn’t just annoying – it violates ISO 3744 standards and impacts well-being. The culprit? Often poorly selected fans.
Battle of the Blowers:
Cross Flow Fans:
Advantages: Flat structure, suitable for space limited places (such as air conditioning indoor unit, wind curtain); can produce wide and uniform airflow; can achieve low noise under specific design (especially in medium and low air volume).
Noise considerations: The noise spectrum is usually wide, and there may be a “howling” sound at specific frequencies when the design is not good. BLAUBERG emphasizes that the noise is reduced through blade optimization and balancing technology.
BLAUBERG’s solution: Curved blade design + vibration-damping mounts cuts noise by 15%
Advantages: Higher pressure capacity, suitable for systems with ductwork or high resistance; usually achieves more concentrated airflow and better acoustic characteristics (especially at higher wind pressure/airflow), and the noise spectrum is easier to control.
Noise considerations: Backward centrifugal impellers are generally quieter and more efficient than forward ones. Emphasis is placed on the aerodynamic optimization and low vibration design of the BLAUBERG centrifugal fan.
BLAUBERG’s solution: Backward-curved impellers reduce turbulence noise
How to choose a silent fan?
Define application requirements (air volume, static pressure, space constraints).
Focus on product dB (A) sound power level/sound pressure level test data
Consider the installation of fans in the system and noise reduction measures.
BLAUBER’s fans can perfectly meet these requirements: Focus on the aerodynamic acoustic optimization of fans, providing a variety of low noise design of axial flow and centrifugal fans to meet strict noise standards.
Welcome to contact the engineer team for more information!
