Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications! Sound attenuation vs. frequency in rotating heat exchangers.
Noise attenuation in rotary heat exchangers:
Noise Attenuation in Rotary Heat Exchanges Frequency ( Hz) 63 125 250 500 1000 2000 4000 8000 Attenuation ( dB) 2 2 3 4 5 7 8 9
Note that larger inlet or outlet chambers should be calculated separate.
Related Topics Noise is usually defined as unwanted sound - noise, noise generation, silencers and attenuation in HVAC systems. Related Documents Estimate noise generated by air flow in ducts. Sound power noise generated by blade dampers in ventilation systems. The logarithmic decibel scale is convenient when adding signal values like sound power, pressure and others from two or more sources. Acoustic noise calculation procedure HVAC systems. Search
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