Sound Attenuation Design of the Air Conditioning System in Auditorium of Large Conference Center——A Case Study of Wuhan International Exhibition Center's Han Hall
The noise of the HVAC system is the main noise source for large conference centers,so the sound attenuation of the HVAC system cannot be ignored.This paper first introduced the key points of sound attenuation design for the air conditioning system of the large conference center Han Hall.Then,it calculated and designed the sound attenuation for the air conditioning supply and return air systems of the auditorium,selected silencers,and tested their attenuation capacity.The background noise of the auditorium was further tested under normal operating conditions of all equipment,and the test results were lower than NR25,meeting the design requirements.The results show that setting the return air outlet in the side light room can effectively reduce the noise of the return air system in the auditorium.Silencers must undergo sound attenuation experiments and meet design requirements before installation.When the air conditioning unit in the auditorium is designed with an air volume of 30,000 m3/h,three standard silencers should be installed on the air duct.This paper provides some insights and reference engineering experience for the sound attenuation design of the air conditioning system in the auditorium.
conference centerauditoriumair conditioning systemsound attenuation designreturn air of side light room
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