Rotary Heat Exchanger - Noise Attenuation

Sound attenuation in rotating heat exchangers

Noise attenuation in a rotary heat exchangers are indicated in the table below:

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.

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