green noise or production of electricity from noise or sound
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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
May 3, 2023 MAHANT BACHITTAR SINGH COLLEGE OF ENGINEERING AND TECHNOLOGY
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OVERVIEW
INTRODUCTION SOUND ENERGY
MATERIALS EFFICIENCY SCOPE
DIFFERENT METHODS
May 3, 2023 MAHANT BACHITTAR SINGH COLLEGE OF ENGINEERING AND TECHNOLOGY
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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.
May 3, 2023 MAHANT BACHITTAR SINGH COLLEGE OF ENGINEERING AND TECHNOLOGY
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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
May 3, 2023 MAHANT BACHITTAR SINGH COLLEGE OF ENGINEERING AND TECHNOLOGY
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DIFFERENT METHODS
DIAPHAGRAM HEAT ENERY INTO ELECTRIC ENERGY TRANSDUCER
May 3, 2023 MAHANT BACHITTAR SINGH COLLEGE OF ENGINEERING AND TECHNOLOGY
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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.
May 3, 2023 MAHANT BACHITTAR SINGH COLLEGE OF ENGINEERING AND TECHNOLOGY
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EXPLAINATION
Fig.2 : ckt of diaphgram
May 3, 2023 MAHANT BACHITTAR SINGH COLLEGE OF ENGINEERING AND TECHNOLOGY
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LIMITATIONIt is efficient only in place where high
decibel of sound is available e.g. nuclear power plant.
May 3, 2023 MAHANT BACHITTAR SINGH COLLEGE OF ENGINEERING AND TECHNOLOGY
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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.
May 3, 2023 MAHANT BACHITTAR SINGH COLLEGE OF ENGINEERING AND TECHNOLOGY
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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
May 3, 2023 MAHANT BACHITTAR SINGH COLLEGE OF ENGINEERING AND TECHNOLOGY
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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
May 3, 2023 MAHANT BACHITTAR SINGH COLLEGE OF ENGINEERING AND TECHNOLOGY
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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.
May 3, 2023 MAHANT BACHITTAR SINGH COLLEGE OF ENGINEERING AND TECHNOLOGY
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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
May 3, 2023 MAHANT BACHITTAR SINGH COLLEGE OF ENGINEERING AND TECHNOLOGY
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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
May 3, 2023 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 .
May 3, 2023 MAHANT BACHITTAR SINGH COLLEGE OF ENGINEERING AND TECHNOLOGY
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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.
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