19-06-2012, 02:43 PM
NON POLLUTING POWER GENERATION USING PIEZOELECTRIC TECHNIQUE
piezo electric based power generation.pptx (Size: 2.03 MB / Downloads: 97)
INTRODUCTION
DEFINITION :-
PIEZOELECTRICITY IS DEFINED AS A CHANGE IN ELECTRIC POLARIZATION WITH A CHANGE IN APPLIED STRESS .
THE CHANGE OF STRESS OR STRAIN IN A MATERIAL DUE TO AN APPLIED ELECTRIC FIELD .
THOUGHT :-
THE PIEZOELECTIC HARVEST HAS SPURRED DUE TO THE TO THE NEED OF ELECTRICAL ENERGY IN REMOTE INSTALLATION WITHOUT THE USE OF DIESEL GENERATING PLANT AND WITHOUT INSTALLING POWER TRANSMISSION LINE .
PIEZOELECTRIC EFFECT
RESULTING FORCE PRODUCES A STRAIN ON THE CRYSTAL CAUSING CHARGE TO ACCUMULATE ON OPPOSING SURFACE.
WHAT CAN PIEZOELECTRIC MATERIAL DO ?
MECHANICAL COMPRESSION OR TENSION ON A POLED PIEZOELECTRIC CREAMIC ELEMENT CHANGES THE DIPOLE MOMENT CREATING A VOLTAGE .
COMPRESSION ALONG THE DIRECTION OF POLARIZATION OR TENSION PERPENDUICULAR GENERATES VOLTAGE OF THE SAME POLARITY AS THE POLING VOLTAGE .
AT DANCE FLOOR
IF A FLOOR CONSIST S OF A PIEZOELECTRIC MATERIAL ,WHEN PERSON S WALK OR DANCE ON IT THEY CONVERT THE KINETIC ENERGY FROM A FOOT STEP IN ELECTRICITY