Project description: no. 2 podium building, 3F roof air cooling module unit, no. 2 podium building, 10F roof air cooling module unit, cooling tower, fume fan operation noise impact on the normal rest and office of the surrounding residents.

Treatment measures: set air inlet and exhaust muffler, install air cooling module, cooling tower sound insulation cover, etc. The air inlet and exhaust muffler is an impedance muffler which can stop the sound propagation and allow the airflow to pass. It is an important measure to eliminate the aerodynamic noise. The air intake and exhaust muffler is a muffler that USES sound waves to propagate in porous sound absorbing materials or structures, and dissipates sound energy by transforming it into heat energy due to friction, so that the noise propagated along the pipeline is attenuated with the distance, so as to achieve the purpose of sound attenuation. The effective noise reduction capacity of air inlet and exhaust muffler ≥25dB (A). The sound insulation cover is made of porous aluminum plate, composite aluminum silicate cotton, steel frame, etc., which effectively isolates the noise of the unit in the sound insulation cover.

Governance effect: meet the design and use requirements, in strict accordance with the design drawings and construction acceptance code for construction, in line with the national, local, industrial construction and acceptance code, quality inspection and evaluation standards. The project quality acceptance grade: excellent, and requirements, acceptance is established on the basis of professional and legal testing to meet the design requirements and the corresponding national standards on the basis