Ventilation Silencers: Engineered HVAC Sound Attenuators for Quiet Equipment Operation

Product Description

Product Description

·NCC Model:
NFS, NFM, N, NSM, NES, NMS, NFL, NML, NL

·Size:
L: 900~3000mm
W(min): 600mm
H(min): 400mm
Sizes can be customized.

·Material:
Generally galvanized steel
Aluminum and stainless steel customizable
Filling Material: Rock wool or glass fiber cotton
Materials can be customized

·Finish Treatment:
1. Metal's original color
2. Polyester Powder Coating (PPC)

Application
 

Cooling tower ventilation and noise reduction

Central air - conditioning ventilation and noise reduction

HVAC ventilation and noise reduction

Fan noise reduction

Factory ventilation systems

Equipment room ventilation systems

Hotel and commercial building ventilation systems

Soundproof enclosures ventilation and noise reduction

Case Display

Industrial Noise Reduction

Fan Noise Reduction
 

Cooling Tower Noise Reduction
 

Soundproof Enclosure Noise Reduction
 

Our Advantages

 

·Noise reduction effect, quality commitment, empirical test
 

·Durable metallic structure and special surface treatment can guarantee maximum 20 years survice life
 

·Strong weather resistance, long service life and convenient for installation and maintenance
 

·Professional design team can provide flexible and diverse customized solutions

·Various models available, which can meet a wide range of purposes

 

Product Parameters

Sound Transmission Loss(dB)         

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.

 

Test Report

Packaging & Shipping

All our packing with Rubber clip board,don't need to do fumigation.
 

 

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.