HYGOOD ACOUSTIC DISCHARGE NOZZLES

Acoustic Nozzle for Data Centres

 

Data centres and server rooms are continuously improving their efficiencies to store and process more data. Improvements in computing hardware have led to an increase in Hard Disk Data (HDD) sensitivity to sound. Inert and halocarbon gas fire suppression systems, normally used to protect this type of equipment, can produce sound levels that may have adverse effects on noise sensitive equipment.

 

HYGOOD have carried out significant research into the impact of noise on HDDs and summarised best practices to help reduce the sound exposure to HDDs.

 

Sound Engineering by HYGOOD

 

HYGOOD performed extensive research and modelling of gas agent flow to develop a novel gas suppression nozzle with a low sound power.

 

 

Hygood iFlow Inert System Acoustic Nozzles

 

The HYGOOD® Acoustic Nozzle, designed for inert gas fire suppression systems, decreases the acoustic footprint during a discharge.

 

The nozzle directs agent into the hazard area and reduces the sound level compared with  standard nozzles.

 

Flow calculations are used to specify the nozzle orifice size for the correct quantity and distribution of agent.

 

The HYGOOD Acoustic Nozzle, in combination with the INERGEN® 150/200 bar and iFLOW 300 bar Fire Suppression Systems, is particularly useful for suppressing fires in hazards where sound levels may affect sensitive electronic equipment.

 

Typical applications for the acoustic nozzle include server rooms and data centers.

 

Technical Specification

 

  • For use with INERGEN 150/200 bar and iFLOW 300 bar systems
  • 360° discharge pattern
  • Aluminum body with fiberglass and internal damping materials
  • Internal pipe with 16 custom-drilled orifice holes
  • Available in 1 1/2 in. (DN40) and 3/4 in. (DN 20) National Pipe Thread (NPT) sizes
  • Available in 1 1/2 in. (DN40) and 3/4 in. (DN 20) British Standard Pipe Taper (BSPT) sizes
  • Drill diameter determined through a hydraulic flow calculation

 

Sound Performance

 

Sound power is the amount of sound energy produced by a noise source such as a fire suppression system discharge nozzle. The Acoustic Nozzle is designed to reduce the sound power level produced during a discharge of the INERGEN or iFLOW Fire Suppression System.

 

Sound pressure is the sound received at a location remote from the noise source. The remote location may include HDDs. It is sound pressure that is the critical sound energy relevant to the effects on the HDDs.

 

The HYGOOD Acoustic Nozzle is one of the factors that assists in reducing the sound pressure to an acceptable level and therefore, reduces the risk of HDD damage. The sound pressure level can be further improved by a number of other factors including the positioning of the nozzles, optimizing the room acoustics, use of sound absorbing room construction materials, and installation of sound absorption panels.

 

 

SAPPHIRE® Acoustic Nozzles

 

The HYGOOD Acoustic Nozzle, in combination with the SAPPHIRE PLUS Fire Suppression system, is suitable for suppressing fires in hazard areas where sound levels may affect sensitive electronic equipment.

 

Typical applications for the acoustic nozzle include server rooms and data centers.

 

Technical Specification

 

  • For use with SAPPHIRE PLUS and 42 bar SAPPHIRE systems
  • 360° discharge pattern
  • Aluminum body with fiberglass and internal damping materials
  • Internal pipe with 16 custom-drilled orifice holes
  • Available in 1 1/2 in. (DN40) and 3/4 in. (DN 20) National Pipe Thread (NPT) sizes
  • Available in 1 1/2 in. (DN40) and 3/4 in. (DN 20) British Standard Pipe Taper (BSPT) sizes
  • Drill diameter determined through a hydraulic flow calculation

 

Sound Performance

 

Sound power is the amount of sound energy produced by a noise source such as a fire suppression system discharge nozzle. The HYGOOD Acoustic Nozzle is designed to reduce the sound power level produced during a discharge of the SAPPHIRE Fire Suppression System.

 

Sound pressure is the sound received at a location remote from the noise source. The remote location may include HDDs. Sound pressure is the critical sound energy relevant to the effects on the HDDs.

 

The HYGOOD Acoustic Nozzle is one of the factors that assists in reducing the sound pressure to an acceptable level, which reduces the risk of HDD damage. The sound pressure level can be further improved by a number of other factors including the positioning of the nozzles, optimizing the room acoustics, use of sound absorbing room construction materials, and the installation of sound absorption panels.

 

Nozzle Specifications

 

Applications Protected by Sapphire Plus & iFlow Techonogly Inert System:

 

• Server Rooms

 

• Data Processing Centers

 

• Process Control Rooms

 

• Simulators

 

Approvals and Listings:

 

  • UL Listed

 

 

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