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Disadvantages Of Alternative Energy

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In upcoming time there is a serious threat on fossil fuels like diesel, petrol and natural gases, because all these fuels are non renewable forms of energy. These source of energy depleted very rapid rate and after some decades they completely exhausted so we should have to prepare to face this challenges. Alternative energy will become increasingly important as fossil fuel supplies inevitably run out or environmental damage sparks consumer awareness. The search for a viable energy alternative will continue until these alternatives can address the dynamic demands of the electrical grid and storage limitations. Piezoelectric devices, used for harvesting the vibrational energy of roads and walkways due to traffic, can produce electrical energy …show more content…
This vibrational energy goes into vain i.e. vibrational energy of motor and other heavy machine is completely useless. And as well as When huge number of vehicles passes through a bridge, bridge also vibrate with some frequency. But we can utilize this vibrational energy into our useful purpose and minimize the load of other power generation source. There is very useful material which when compressed or vibrate produce electricity due to piezoelectric effect called as piezoelectric material.
What is piezoelectricity?
The word “piezo” is derived from Greek word pierzin which means to squeeze or press so when piezoelectric material compressed or vibrate again and again it exert a electric field.
The piezoelectric effect manifests itself as a transfer of mechanical energy into electrical energy and vice versa.
So piezoelectric effect is a reversible process in that materials exhibiting the direct piezoelectric effect(the internal generation of electrical charge resulting from an applied mechanical force) also exhibit the reverse piezoelectric effect (the internal generation of a mechanical strain resulting from an applied electrical

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