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Introducing Whisp-Air

Many hard disk drives are designed and produced in China with little to no vibration testing. This has created somewhat of an issue when it comes to your gaseous fire extinguishing system discharging. Noise issues like these have been attributed to all gas types and IT specialists need to investigate IT Specific measures that can be implemented because as the mechanical disk drives become more sensitive due to performance and cost driven objectives, this problem will only increase.

However, for the interim, Alien Systems & Technologies has developed and manufactured a product that will treat the symptoms and lower the risk of damage to hard disks. The Whisp-Air Silencer Nozzle has been designed specifically for use in applications where protection of sound sensitive equipment such as hard drives is required.

The Whisp-Air full-flow design uses interposing sound waves, multiple-stage velocity deceleration, an obstruction-free expansion chamber and a metal fibre disseminator to dissipate potentially damaging discharge noise. A large peripheral exhaust surface area diffuses the extinguishing media, further lowering its velocity and reducing discharge noise.

The Whisp-Air silent nozzle product eliminates excessive discharge noise by dividing the extinguishing media stream and turning it back on itself. As the extinguishant enters the muffler at high velocity, it is redirected into smaller extinguishant streams that rebound off opposing walls of the chamber. With the extinguishant streams colliding head-on with each other, the velocity is reduced and the extinguishant is dispersed throughout the large exit surface area. This technique eliminates noise without sacrificing flow rate or increasing back pressure.

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