green noise or production of electricity from noise or sound

May 3, 2023 MAHANT BACHITTAR SINGH COLLEGE OF ENGINEERING AND TECHNOLOGY

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MAHANT BACHITTAR SINGH COLLEGE OF ENGINEERING AND

TECHNOLOGY

SEMINAR TOPIC “GREEN NOISE” BY SUKHVINDER SINGH ROLL NO: 243/11 AE&IE


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OVERVIEW

INTRODUCTION SOUND ENERGY

MATERIALS EFFICIENCY SCOPE

DIFFERENT METHODS


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INTRODUCTION It is concept of conversion of sound

energy into electrical energy. According to law 3rd law of

thermodynamics mechanical energy could be converted into electricity.

It could be used in lightning the street light using noise pollution.


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SOUND ENERGY It is a mechanical energy which travels in the

form of wave, mechanical wave that is oscillation of pressure which need medium to travel.

Through liquid and gas state sound is transmitted as longitudinal wave. Whereas through solid it could be transmitted as Longitudinal wave and transverse wave. Fig. 1 : sound wave


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DIFFERENT METHODS

DIAPHAGRAM HEAT ENERY INTO ELECTRIC ENERGY TRANSDUCER


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DIAPHAGRAM METHOD A very thin curtain like diaphagram which

will get fluctuated by the oscillation and pressure created by sound wave.

A conductor will be attached to it which will be placed between the magnetic bar.


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EXPLAINATION

Fig.2 : ckt of diaphgram


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LIMITATIONIt is efficient only in place where high

decibel of sound is available e.g. nuclear power plant.


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HEAT ENERGY INTO ELECTRIC ENERGY

Firstly sound energy is converted into heat energy as sound wave travel by oscillating the particle of medium.

When sound energy travel through the medium it will disturbs the particle of medium.

These disturbance created by sound will be used to convert it into heat energy.


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LIMITATION

This method is less efficient due to more energy

losses taking place while conversion of sound

energy to heat energy and then electric energy.

Fig. 3: conversion of energy


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TRANSDUCERA electric or electronic device that

converts a signal in one form of energy into another form of energy.

Piezoelectric transducer is a device which can be used to convert sound energy into electrical energy .

Fig. 4 :transducer


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PIEZOELECRIC TRANSDUCER These are transducer its crystals could

convert mechanical strain to electricity. When the crystal is deformed by the

application of external stress electric charge appear on the crystal surfaces.


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CIRCUIT FOR PIEZOELCTRICC SYSTEM

When the sound energy is applied to piezo electric materials it creates strain in the crystal then it reverse it and the strain is converted into electric energy.

Fig. : circuit of piezoelectric system


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DEVICE

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ITS SCOPE

It could help us to reduce the scarcity of electric energy .

Noise pollution in the road would be able to convert electric energy.

The noise in runway could be used to produce electricity.

The electricity in nuclear power station could increase.

The noise pollution in industries could be able to produce electricity.

MAHANT BACHITTAR SINGH COLLEGE OF ENGINEERING AND TECHNOLOGY


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CONCLUSION As sound has enormous amount energy

with it, it could be used by converting it into electric energy for various purposes.

Sound energy is mechanical energy so it can be converted into electric energy.

It could solve energy problem .


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DEMERITS Lots of work to be done in this field. Its efficiency is not that good so

improvement is being required. It is bit costlier. It could not be used in the places where

decibel of sound is very low.

green noise or production of electricity from noise or sound

Engineering

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