Project Name: Handan City Congtai District Heat Pump Unit Noise Reduction Project

Project Brief: The equipment to be treated in this project consists of 20 air-cooled heat pump units, which are located on the roof of the mezzanine floor in Congtai District. The sound source is approximately 30 meters away from the sensitive point. The sensitive point is a high-rise residential complex.

Governance Objective: Achieve the first-class standard of the "Sound Environmental Quality Standard" (GB3096-2008), i.e., daytime ≤ 55dB(A) and nighttime ≤ 45dB(A).

Treatment Measures: This project utilizes large noise-insulating hoods, impedance composite silencers, ventilation silencing louvers, and soundproof doors as treatment measures.

Governance Effectiveness: Through governance, the sensitive points have reached 42db(A). The governance effectiveness and the overall project appearance have been highly recognized by the client's leaders and the residents related to the sensitive points.