Acoustic Housing for Industrial Compressors
Air Compressor Soundproof Enclosure
Purpose-designed acoustic enclosures for reciprocating, rotary screw, and scroll air compressors up to 200 kW. Achieves 20–35 dB(A) noise reduction, bringing compressor sets below occupational noise limits and workshop noise regulations without restricting cooling or maintenance access.
Technical Specifications
Applications
- Factory and workshop compressor rooms
- Occupational noise limit compliance
- Hospital and laboratory compressed air systems
- Food and pharmaceutical clean-air compressors
- Retail and commercial HVAC compressors
- Noise-sensitive residential area installations
- Marine and offshore compressed air systems
Overview
Air compressors are among the most persistent sources of workplace noise — reciprocating compressors typically operate at 75–90 dB(A), and rotary screw units at 68–78 dB(A). The HEMU Acoustics Air Compressor Soundproof Enclosure reduces compressor noise by 20–35 dB(A), bringing even the noisiest reciprocating units below 55 dB(A) at 1 metre.
Compressor enclosures present unique engineering challenges: high heat rejection, continuous operation, and regular maintenance requirements. The HEMU enclosure addresses all three. Acoustically baffled intake and exhaust ventilation is sized to the compressor's cooling airflow requirement, maintaining safe operating temperatures at full load. Thermal monitoring sensors trigger alarm outputs if internal temperature approaches the compressor manufacturer's limit.
For rotary screw compressors, the standard 75 mm panel construction reduces noise by 20–28 dB(A). For reciprocating compressors — which generate stronger structural vibration — the enclosure includes vibration isolation mounts under the compressor and acoustic break joints at wall penetrations, achieving 28–35 dB(A) net reduction.
Access for maintenance is via full-height hinged panels or lift-off sections, sized to allow filter changes, belt inspection, and oil servicing without disassembly. Air receiver tanks, dryer units, and filter banks can be included within the enclosure footprint on request. All compressed air, electrical, and condensate connections are factory-fitted with acoustic break flanges.
Key Features
20–35 dB(A) Noise Reduction
75–100 mm composite wall panels with mineral wool core, mass-loaded vinyl, and perforated steel facings. Vibration isolation mounts on the base frame for reciprocating compressors prevent structure-borne transmission. Verified to ISO 3744 and ISO 11546.
Thermally Optimised Ventilation
Acoustically baffled intake and discharge ducts with splitter baffles, designed to the compressor manufacturer's minimum cooling airflow specification. Internal temperature monitored by thermistor sensor with relay alarm output.
Vibration Isolation System
Anti-vibration mounts under the compressor base, acoustic break flanges on all pipe connections, and resilient suspension of internal panels prevent vibration from bypassing the acoustic enclosure through structure-borne paths.
Full Maintenance Access
Full-height hinged access panels on two sides allow filter replacement, oil servicing, belt inspection, and valve changes without enclosure disassembly. Panels seal magnetically with compression acoustic gaskets.
Integrated Ancillary Equipment
Air receivers, refrigerant dryers, coalescing filters, and condensate drains can be included within the enclosure footprint. All compressed air connections, electrical supplies, and condensate lines are factory-fitted.
Custom Configuration
Enclosures are designed to the specific compressor model, site dimensions, and acoustic requirement. Existing compressor installations can be retrospectively enclosed with minimal site modification.
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