INDUSTRIAL SILENCER

Industrial Silencer is a device designed to reduce the noise created by explosions during the combustion process. Silencers are also known as ‘mufflers’ are designed using latest technology and top grade raw materials to reduce the noise.

DIFFERENCE BETWEEN MUFFLERS AND SILENCER

Muffler(in American term) is a device used to decrease the noise created in exhaust system of internal combustion engine is also called as Silencer(in British English)APPLICATION

Silencer play a important role on industries to reduce the noise in exhaust system of inlet and outlet engine, some of the applications are listed below

• Vent/blow down silencer -> Blow down silencers are applicable for rapid exhaust or venting application to reduce the noise.
• Engine silencer -> This type of engine silencers are used to reduce the noise on industrial engine, both inlet and outlet silencer may be used.
• Blower/fan silencer-> Blower can contain air filters ,it is designed for the inlet and outlet of a blower or fan for noise reduction.
• Compressor silencer-> Compressor silencers are specially designed for use of air or gas compressor.
• Turbine silencer-> Turbine silencer is typically designed for gas turbines, It is used to reduce the noise on inlet and outlet port of gas turbines.
• Vaccum pump silencer-> Vaccum pump silencer is specially designed to reduction of noise at inlet or outlet of vaccum pumps
• Chimney silencer-> It is specially designed for a combustion exhaust from industrial boilers, furnaces and ovens.
• Pneumatic mufflers-> It can help to reduce the equipment noise ,In some instance it completely eliminate the need of wearing a ear plugs. It is porous to air and fluids helping to minimize back pressure.
• Automotive mufflers-> In cars, trucks, motorcycles and industrial vehicles familiar type of automotive muffler is used to control the noise.
• Pressure relief valve silencer-> It is designed uses within back pressure or pressure relief valves to reduction of noise associated with relief blow off silencer.

TYPES OF NOISE REDUCTION SILENCER

Noise can be caused by number of factors including fans, the air pass through a straight duct and flow of air through component such as branches, elbows, tubes and so on.

Noise reduction silencers are categories into four types they are listed below

• Absorptive or dissipative silencer
• Reflective or reactive silencer
• Diffuser or depression silencer
• Active silencer

ABSORPTIVE OR DISSIPATIVE SILENCER:

Absorptive silencer uses a fibrous material, which absorb sound waves. In HVAC duct system this type of silencer are frequently used. Absorptive silencers are simple straight through the design which minimize the restriction of air flow, It particularly good for high noise frequencies range from 500 to 800 HZ.

REFLECTIVE OR REACTIVE SILENCER:

Reflective silencer is used for a fixed speed machinery which is producing pure tones. Reflective or reactive silencers are reducing noise in essentially reflect the sound waves back to source were they came from.

DIFFUSER OR DEPRESSIVE SILENCER

Diffuser type of silencers are used to slow down velocity and prevent the generation of low frequency noise, It is mainly applicable on nozzles control valves, jet engines and so on.

ACTIVE SILENCER

Active silencer is also known as “Noise cancelling silencer” which essentially cancelling the out disturbing sound, so they create a lack of sound by creating a noise.

HVAC SYSTEM

Heating, ventilation and air conditioning (HVAC) is technology of indoor and vehicular environmental comfort. Its goal is to provide thermal comfort and acceptable indoor air quality.

In HVAC duct systems absorptive or dissipative silencers are frequently used for a noise reduction.