Environmental Noise Control, Inc’s Model “R” Hybrid Permanent Sound Control Barrier Walls are designed to have a superior sound loss rating (STC) along with a highly absorbent surface performance (NRC) to block and absorb gas compressor noise effectively. ENC’s standard Model “R” Sound Wall system is laboratory tested to meet an STC-40 rating per ASTM E 413-87 and an NRC of 1.15 per ASTM E 795-93. The acoustical walls are typically installed at heights ranging from 12 to 32 feet high, depending on the size of the noise source and the required sound attenuation.

ENC’s Model “R” Permanent Sound Control Barrier Wall system is designed with a pre-painted exterior metal surface with a perforated metal liner. An acoustical absorber material and a specialized “barrier septum” material are installed between the exterior and interior metal skins. The “barrier septum” material is custom designed for each compressor wall based on the frequency content of the noise generated by the compressor and the required sound mitigation performance of the walls. To provide adequate airflow to the gas compressor units while at the same time providing optimum sound control, ENC developed a modified sound wall system with integral intake and discharge silencers incorporated within the sound wall.

The hybrid sound wall system design allows for increased airflow to the compressor fan units while at the same time blocking compressor noise. A computer noise model evaluation determines the design and sizing of the air intake and discharge silencers. ENC’s Model “R” Hybrid Permanent Sound Control Walls typically reduce equipment noise levels by 12 to 20 dBA on the sides of the compressor equipment equipped with the integral silencer units. All permanent gas compressor hybrid sound walls are pre-engineered to meet or exceed IBC wind and seismic loading requirements.

Contact Environmental Noise Control to learn about its acoustical perforated metal & compressor walls with a silencer.