Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : October 25, 2023 - October 27, 2023
A lot of building equipment which can generate noise is installed in facilities such as factory, disposal center and data center. It is necessary to keep the complex noise levels below the limits stipulated by laws or regulations at the boundaries of the premises. When it is predicted that complex noise levels at site boundaries will exceed the limits during facility installation planning, acoustic silencers are sometimes installed on each piece of equipment as a countermeasure. However, since noise reduction performance and cost differ depending on the type of silencers, it takes a lot of labor when the number of equipment is several hundred, and it has been difficult to select the optimum in terms of performance and cost. In this study, an optimum attenuation design method using genetic algorithm is proposed. It took two days for the assignment of a silencer by a professional engineer for a facility. But now, with the optimization method, it can be automatically assigned in about one hour. In addition, we were able to reduce the total cost of the silencer from 50 million yen to 30 million yen when selected by a professional engineer.
