Product Description
The silencer allows air to flow through and reduces noise by absorbing it. It is a noise-reducing device installed on the air-flow path of aerodynamic equipment (such as blowers, air compressors, boiler exhaust ports, generators, water pumps, and other equipment with large exhaust noise) or in the intake and exhaust systems.
When ventilation is required in an enclosed space and noise needs to be controlled simultaneously, installing duct silencers is the optimal solution to address this challenge.
NCC Duct Silencer is available in two shapes: rectangular ventilation ducts and elbow ventilation ducts.
Application
Transformer or substation sound insulation rooms along with their radiators and boiler rooms;
Radiators for construction machinery;
The air intake of data centers and water pump rooms;
Vents on soundproof enclosures;
Air conditioning and ventilation systems of civil and industrial buildings;
Air inlet and return air pipelines of fans;
Air handling units;
Cooling towers; and radiators.
Our Advantages
Noise reduction effect, quality commitment, empirical test
Durable metallic structure
Strong weather resistance, long service life and
convenient for installation and maintenance
Strict performance tests
Flexible and diverse customized solutions
Product Parameters
| Silencer Type |
Face Velocity |
Self Noise(Lw) |
DIL,dBat250Hz |
Pressure
opinN/m² |
| Length(mm) |
Length(mm) |
| m/s |
dB |
900 |
1500 |
2100 |
3000 |
900 |
3000 |
| NFS |
5 |
45 |
22 |
31 |
37 |
47 |
142 |
177 |
| NFM |
5 |
36 |
15 |
23 |
30 |
39 |
47 |
60 |
| N |
3 |
35 |
15 |
23 |
31 |
41 |
90 |
122 |
| NSM |
3 |
31 |
14 |
21 |
29 |
38 |
50 |
78 |
| NES |
5 |
33 |
14 |
19 |
31 |
41 |
55 |
110 |
| NMS |
5 |
36 |
12 |
17 |
23 |
32 |
25 |
47 |
| NFL |
5 |
32 |
14 |
17 |
22 |
29 |
20 |
25 |
| NML |
5 |
30 |
9 |
14 |
19 |
25 |
12 |
22 |
| NL |
5 |
37 |
8 |
13 |
16 |
23 |
12 |
17 |
Laboratory Testing
NCC Acoustic Laboratory - A Laboratory Professionaly Committed to Serving Customers
We exert every ounce of our strength to construct a high-end, avant-garde laboratory endowed with autonomous control capabilities. For all bespoke products, be it in terms of specifications, dimensions, or acoustic requisites, prior to entering the mass production phase, we shall enforce rigorous and meticulous pre-production sample testing procedures. Only upon thorough confirmation that all indicators are up to par will we invest a considerable amount of human and material resources to embark on mass production endeavors, thereby effectively guaranteeing that each and every batch of large-scale goods delivered to clients possesses outstanding quality.
The fabricated product samples are positioned within the spacious window of the laboratory and securely fastened through professional sealing measures. Through precise adjustment of the relevant parameters and concurrent utilization of advanced and precise apparatuses for comprehensive and profound testing, it is ultimately ensured that the products can fully comply with the exacting requirements of customers.
As depicted in the illustration, the external noise of the laboratory attains 80.1 dB, while through random measurement, the internal acoustic laboratory drops to 36.4 dB or even lower. The elevated standard of sound insulation not only ensures the accuracy of the experimentation but also furnishes a robust guarantee for the test outcomes.
Packaging & Shipping
Company Profile
NCC is a supplier of noise control services and acoustic products. We have developed multiple sets of noise control solutions in various fields such as aerospace, commercial buildings, medical audiometry, industrial engineering, power equipment, subways and tunnels, performing arts buildings, and noise reduction laboratories. We provide customers with electric audiometry rooms, semi anechoic rooms, silent rooms, shielded rooms, listening rooms, fireproof soundproof doors, ventilation silencers, exhaust silencers, and noise reduction louvers Comprehensive professional services and technical support for the design, manufacturing, and installation of cooling tower noise control.
Over the years, NCC has developed into a turnkey supplier of noise control, providing customers with one-stop solutions from concept to completion, including solution consulting, synchronous research and development, construction drawing design, structural design, fluid calculation, air conditioning and electrical system engineering, product manufacturing, installation and commissioning, and testing and acceptance services. With over 70 years of experience in noise control and acoustic engineering, we will provide you with solutions that meet your needs and budget. We look forward to working with you.
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