Aqua Silencer free essay sample

An aqua silencer is used to  control the noise  and emission in ic engines. The reason why we go for aqua silencer is, in today life the  air pollution causes  physical ill effects to the human beings and also the environment. The main contribution of the air pollution is automobiles releasing the gases like carbon dioxide, unburned hydrocarbons etc. In order to avoid this type of gases by introducing this aqua silencer. It is fitted to the exhaust pipe of the engine. Sound produced under water is less hearable than it produced in atmosphere. This mainly because of small sprockets in water molecules, which lowers its amplitude thus, lowers the sound level. The emission can be controlled by using the activated charcoal layer and it is highly porous and poses extra free valences so it has high absorption capacity. So absorb the gases from the engine and release much less position to the environment. The noise and smoke level is considerable less than the conventional silencer, no need of catalytic converter and easy to install. SILENCER Silencer may refer to Muffler, a device for reducing the amount of noise emitted by the exhaust of an internal combustion engine * Silencer (DNA), a DNA sequence capable of binding transcription regulation factors termed repressors * Suppressor, a device attached to or part of the barrel of a firearm which reduces the amount of noise and flash Universal brand exhaust silencers provide the most favorable performance for all applications by offering silencers crafted for four different attenuation grades. Due to the variability of different applications, performance levels are most accurately shown as broad range expected attenuation bands, which are based upon typical conditions. These bands will not define the exact insertion loss for a specific application, since insertion loss is influenced by engine size, type, speed and untreated noise levels. Silencers for Small Spaces and Critical Applications Puck-style silencers are low-profile silencers that not only fit in the smallest enclosures, but are also ideal for portable power, marine, or other applications where a tight fit is a concern. The single inlet models are available in residential, critical and hospital attenuation grades. Critical and hospital models also offer a low skin temperature (LST) design for exceptionally small compartments and enclosures to keep radiant heat to a minimum. The LST configuration incorporates an extra layer of packed acoustic/thermal insulation that reduces heat and noise, eliminating the need for expensive external wraps. The aluminized steel designs far outperform the comparably priced carbon steel competition by offering higher corrosion resistance, greater maximum operating temperatures, less weight and an overall longer silencer life. Silencers for Existing Exhaust Systems Standard spark arresters are designed for general applications with a minimum of restriction on the engine, and are ideal as add-on units to existing exhaust systems. The arresters light weight and small size reduce stress and vibration to the rest of the exhaust system. Typical applications include logging and construction equipment, agricultural machinery, over-the- road trucks, airport equipment, forestry, and military vehicles. Standard engine exhaust silencers are available in the following grades: Industrial Grade, Residential Grade, Critical Grade, and Hospital Grade, and are available in the following configurations: * Type 1: End-in, end-out design * Type 2: Side-in, end-out design * Type 3: Middle side-in, end-out design Low Pressure Drop Silencers Low pressure drop silencers are available in two configurations: End-in, end-out design Side-in, end-out design Space Saver Space Saver units are designed for side-in end-out mounting, although either end may be used as an inlet. Using end-in side-out may result in lower attenuation reductions. Condensate drains standard on all units. Spark Arresters, Non-Silencing Standard spark arresters are designed for universal application with a minimum of restriction on the engine, and are ideal as add-on units to existing exhaust systems. The arresters light weight and small size reduce stress and vibration to the rest of the exhaust system. Typical applications include logging and construction equipment, agricultural machinery, over-theroad trucks, airport equipment, forestry, and military vehicles. Spark Arresting Silencers, Type 1 Standard Spark Arresting Exhaust Silencers provide high efficiency spark arresting and exceptional sound attenuation where fire hazards must be eliminated and noise must be minimized. Three attenuation grades (industrial, residential, and critical) are available with spark arresting efficiencies exceeding 95%. Heavy gauge material and fully welded construction provide maximum strength and longer service life in these units. Applications include stationary and portable gen sets, oil field equipment, propulsion engines on ships, and gas compression equipment. Spark Arresting Silencers, Type 3 Standard Spark Arresting Exhaust Silencers provide high efficiency spark arresting and exceptional sound attenuation where fire hazards must be eliminated and noise must be minimized. Three attenuation grades (industrial, residential, and critical) are available with spark arresting efficiencies Male pipe thread connections through 3. 5, 4, and larger are 125/150# ASA drilled flanges. Drains are standard on all silencers with a 9 body diameter or larger. Side-in end-out configuration is designed for side inlet flow only. Unit cannot be run backward. All dimensions are in inches. exceeding 95%. Heavy gauge material and fully welded construction provide maximum strength and longer service life in these units. Applications include stationary and portable gen sets, oil field equipment, propulsion engines on ships, and gas compression equipment. EN Series Multi-Chamber Silencers For the majority of engines and operating conditions, multi-chamber type silencers provide maximum noise attenuation within acceptable back pressure limits. Most naturally aspirated and supercharged engines need this type of silencer. Many turbocharged engines are best silenced with this design also. ET Series Straight-Through Silencers Some engines require very low exhaust system back pressures for maximum performance. Many turbocharged engines and some naturally aspirated engines fall into this category. For these engines, straight through, reactive silencers are available to provide adequate silencing while imposing negligible restriction on exhaust gas flow. ES Series Spark Arresting Silencers Operating locations exist where fire hazards and safety codes require removal of sparks from exhaust gases. Universals spark arrestor silencers are engineered to perform the dual function of spark arrestment and silencing for all internal combustion engines.