Rectangular Duct Silencer: Industrial Ventilation Noise Reduction Solution

• Customization: Available
• After-sales Service: Yes
• Warranty: 2 Years
• Model NO.: NCC5
• Customized: Customized
• Certification: ISO
• Type: Rectangular Duct Silencer
• Application: Cooling Tower, Central Air Conditioner, HVAC
• Material: Galvanized Steel, Aluminium, Stainless Steel
• Color: Customized
• Shape: Rectangular
• Filling Material: Rock Wool or Glass Fiber Cotton
• Surface Treatment: Metal′s Original Color or Polyester Powder Coating
• Transport Package: Plywood Board Packaging
• Specification: Can be customized
• Trademark: NCC
• Origin: China
• HS Code: 7308300000
• Production Capacity: 2000 M2/Month

Product Description

 

Product Description

The Rectangular Duct Silencer is engineered to effectively attenuate noise within rectangular duct systems while maintaining optimal airflow and minimizing pressure loss. Featuring a streamlined design, it offers a balance of simplicity, durability, and cost efficiency, making it a practical solution for noise control in HVAC applications. Its modular construction and customizable performance parameters allow seamless integration into various duct configurations, ensuring compatibility with diverse heating, ventilation, and air - conditioning systems. By combining reliable noise reduction with energy - efficient operation, the Rectangular Duct Silencer delivers a versatile and economical choice for enhancing indoor environmental quality.

Structure

Model                     NFM
Model Size(mm)     L:900~3000,W(min):600,H(min):400
Frame Material       1.0 mm Galvanized steel plate
Blade Material        0.8 mm Galvanized steel perforated plate
Filling Material        Sound-absorbing rock wool or glass fiber                                                cotton:32~100kg/m³
Color                       Customized

 

Application

Low and medium velocity systems requiring superior low frequency DIL acoustic performance. Used in-line with filter/coil banks or in medium velocity duct-mounted installations.

Low and medium velocity systems requiring good low and high frequency attenuation for broad spectrum performance at medium pressure drops.

Higher velocity systems where improved low frequency acoustic performance is required at lower pressure drop.

Higher velocity systems requiring low and high frequency attenuation for broad spectrum performance at the lowest pressure drops.

 

Standard Compliance and Performance Assurance
This product is designed and tested in strict accordance with American standards. It not only ensures easy installation but also delivers superior performance through meticulous craftsmanship, guaranteeing reliability across diverse applications.

High-Quality Materials and Wide Applicability
Constructed with durable aluminum alloy material, it is suitable for air intake scenarios such as fresh air inlets, combining long-lasting endurance with structural strength.

Flexible Customization and Standardized Services
Offered in standard specifications, the product can also be customized to meet specific shape requirements, providing versatile solutions for various installation and design needs.

Premium Surface Finishes and Long-Term Warranty
Boasting a range of durable and aesthetically appealing surface treatment options, it also includes a maximum warranty period of up to 20 years, ensuring both product quality and long-term usage confidence.

 

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.