Environmental Noise Control, Inc’s Model “R” Permanent Compressor Sound Walls are designed to have a superior sound loss rating (STC) along with a highly absorbent surface performance (NRC) to block & 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 & an NRC of 1.15 per ASTM E 795-93. The acoustical walls are typically installed at heights ranging from 12 feet 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 both a staggered wall system design and a modified sound wall system with integral intake & discharge silencers incorporated within the sound wall. Both system designs allow for increased airflow to the compressor fan units while at the same time blocking compressor noise.

A computer noise model evaluation determines the positioning, spacing of the staggered wall elements and the design & sizing of the air intake & discharge silencers. ENC’s Model “R” Permanent Sound Control Barrier Wall system typically reduces equipment noise levels by 17 to 26 dBA on the sides of the compressor equipment where the walls are installed. All permanent gas compressor sound walls are pre-engineered to meet or exceed IBC wind and seismic loading requirements.

Contact Environmental Noise Control to learn more about its permanent compressor sound walls.