Suppression of Blower noise in Piping and Power Generation Using Blower Noise

Abstract

We tried to suppress the sound generated by the blower in the piping and use the sound to generate electricity. In the experiment, the air is blown from the blower into the pipe and the sound pressures are measured by microphones. A Helmholtz resonator is attached to the pipe to suppress sound. In this research, the sound generated by the rotation of the fan blades is targeted. The Helmholtz resonator was used to suppress the target sound. In addition, the sound was used to perform vibration power generation, and the amount of power generation was investigated. The characteristics of the resonance sound of a nose flute attached to the Helmholtz resonator were investigated, and it was clarified that the nose flute was more effective to generate electricity.