Cooling Technologies and Industrial Noise Management
1. Noise management in cooling technologies: variables to consider
The sound power data of the equipment thus calculated can be useful to Customers or Consultants to forecast the acoustic impact of new installations. The presence of background noise, possible obstacles or reflective walls, and the noise produced by other machinery in the surrounding area must be taken into account in this measurement.
2. Noise management: some practical examples
- Sound pressure is requested at a certain distance. In this case, starting sound power value is calculated as if the source were point-shaped: i.e. the incidence of the emission surface is neglected. The required sound pressure values are almost always within 15 meters of distance, i.e. the limit within which the emission surface must always be considered.
- Sound pressure is required (perhaps very low) at a certain distance starting from a correctly calculated sound power. We know that the value supplied will not have any real confirmation due to the presence of obstacles or other relevant noises. In practice, we know that this is not in “free field” and not “in the absence of background noise” as the standard required).
- Sound pressure data is requested basing on a sound power value; in this case, this is calculated in a different way than the European standard mentioned above.
3. In conclusion
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