s.k.d Engineering college

PIEZOELECTRIC ROADS

PRESENTEDBY B.Sai suhas&p.Pavan kumar

PIEZOELECTRIC ROADS

INTRODUCTION PIEZOELECTRICITY – HISTORY

WORKING PIEZOELECTRIC ROADS –

CONSTRUCTION

HARVESTING MECHANISM COST ANALYSIS COMPARISON ADVANTAGES FUTURE PLANS CONCLUSION

INTRODUCTION

Electricity is a basic need for everyonePresently there are many alternatives like

solar , wind , tidal etc..All these years we have ignored a better

alternative which is right under our feet ….“THE PIEZOELECTRIC ROAD“

Piezoelectricity, discovered by Curie brothers in 1880, originated from the Greek word “piezenin”, meaning to press.

PIEZOELECTRICITY - HISTORY

PIERRE CURIEJACQUES CURIE

A force is applied along a neutral axis (y) of a crystal and the charges are generated along the (x) direction, perpendicular to the line of force.

The amount of charge depends on the

1. Geometrical dimensions of the respective piezoelectric element.

2. The pressure applied.

WORKING

PIEZOELECTRIC ROADS

Present day we are using asphalt roads (Tar road) on which thousands of vehicles run on it.

When a vehicle passes over a road, the road deflects (vibrates) vertically.

These vibrations are released as thermal energy which is being wasted.

CONSTRUCTIONThe first layer is laid with fine gravel and sand content.Then a thin layer of asphalt is laid which acts like a strong base for

the generators.Piezoelectric generators are placed in quick drying concrete and

left for 30min.

Then all the generators are wired in series to get collective output.

A bitumen sheet is used to cover all the generators to provide better adhesion of concrete to asphalt.

Finally a thick layer of asphalt is laid which finishes the construction.

HARVESTING MECHANISM Generators harvest the mechanical energy of the vehicles and converts to electrical energy.

Then it is charged into the battery on one side of the road.

From there it is distributed .

Yield : For one km of piezoelectric road, of one lane we can generate 44000 KWh/yr.

Solution does not take up any public spaceFunctions in all weather conditionsLow maintenance after implementationSolution is integrated with infrastructure – theft and

damage proof and interruption in power supply

IPEG'S ADVANTAGES

Generator size: 1sq ft

1 Generator = Rs.2000

No of Gen. needed = 3280 (for 1km of road.)

Cost estimation= 70lakhs (for 1 km of road.)

COST ANALYSIS

We have taken the outer ring road project of Hyderabad to compare

The overall budget of this project is 6700cr

In this a 8 lane road of 158km stretch is laid

If a piezoelectric road is laid ……

The budget becomes 6800 cr which is only 1.5% increase in overall budget

COMPARISON

Power generation:

Every year 44000 kwh is generated in one km single lane road.So if we calculate,

158km x 8 lane x 44000kwh = 55616000 kwh

can be generated.

In general gov of India charge Rs.5 on an avg per 1kwh ,so by calculation .

5 x 55616000 = Rs.270000000 (27 Cr)

• The amount invested on this road returns in just less

than 4 yrs.

• The average life of this piezoelectric road is 30years

…so the income generated in the next 26 yrs would

be a profit.

This is a green solution for power generation.

It is relatively inexpensive and easy to install.

Even the most untouched and remote areas can be electrified.

Dependence on thermal electricityis minimized which in turn saves the nature.

ADVANTAGES

This Technology is also applicable to airport runways and rail systems.

FUTURE PLANS

This is an excellent alternative to reach the increasing demands for electricity.

It should be implemented in India also to accelerate the development.