ACOUSTIC WALL WITH IN-BUILT HEAT EXCHANGER

摘要

The subject of the invention is a device for attenuating sound waves forming the wall of a duct, the sound waves spreading in a stream of air passing along the duct. The device comprises a structure (13) constituting a noise attenuator, bounded by a perforated internal wall and a solid external wall. The device comprises fluid tight piping for transporting a heat-transfer fluid on the internal face of the internal wall, the piping constituting a network of piping running substantially in one and the same direction, and such that each length of piping is situated between rows of orifices and is situated substantially in line with the cell partitions. The piping together with the internal wall forms a surface heat exchanger.