EXPERIMENTAL INVESTIGATION ON AN AQUA SILENCER

Abstract

Air pollution is an important public health problem in most cities of the developing world. Pollution levels in
megacities such as Bangkok, Cairo, Delhi and Mexico City exceed those in any city in the industrialized countries.
Epidemiological studies show that air pollution in developing countries accounts for tens of thousands of excess deaths
and billions of dollars in medical costs and lost productivity every year. These losses, and the associated degradation in
quality of life, impose a significant burden on people in all sectors of society, but especially the poor.
Industries is major source of noice and air pollution then after second major source is Automobiles. The internal
combustion engine is the key to the current society. Without the transportation performed by the millions of vehicles on
road and at sea we would not have continue to today’s living standard. The internal combustion (IC) engine is known to
be one of the extreme sources of air pollution in the environment. The fuel oxidation process in the engine generates not
totally useful power, but also a considerable amount of pollutant emissions including Carbon Dioxide (CO2), Carbon
Monoxide (CO), Nitrogen Oxides (NOx),Unburned Hydrocarbon (HC) and Particulate Matter (PM). CO2 is essentially
responsible for the global warming issue as it creates a reflective layer in the atmosphere that reflects heat from the
earth back to the earth surface, increasing the earth’s normal temperature over time. CO is a very dangerous substance,
since it reduces the oxygen-carrying capacity of the blood stream. An aqua silencer is an attempt in this direction to
reduce air and noise pollution by the automobile vehicle with the help of aqua silencer sound produce is very less
because , the sound produced in under water having less amplitude than in open atmosphere and with the help of the
perforeted tube gases high mass bubble transformed into low mass bubble which has low amplitude and lower sound
level. The charcoal layer which is pasted over perforated tube. The emission of polluted gases can be controlled by using
the activated charcoal and highly porous extra free valences due to have high absorption capacity of this layer.