Rotary Heat Exchanger Noise Attenuation

Overview

Engineering reference data for Rotary Heat Exchanger Noise Attenuation in acoustics.

Key Formulas

Speed of Sound

$c = \sqrt{\gamma R T}$

Speed of sound in an ideal gas.

Sound Level

$L = 10 \log_{10}(I/I_0)$

Decibel level.

Wavelength

$\lambda = c / f$

Wavelength = speed / frequency.

Variables

Symbol	Description	Unit
$c$	Speed of sound	m/s
$L$	Sound level	dB
$\lambda$	Wavelength	m
$f$	Frequency	Hz

Noise Attenuation Frequency Data

:::note Note that larger inlet or outlet chambers should be calculated separately. :::

Interactive Charts

References

• Original Source