Piezoelectric roads

generation of electricity by roads

1. s.k.d Engineering college PIEZOELECTRIC ROADS PRESENTED BY B.Sai suhas & p.Pavan kumar

2. PIEZOELECTRIC ROADS

3. INTRODUCTION PIEZOELECTRICITY – HISTORY WORKING PIEZOELECTRIC ROADS – CONSTRUCTION HARVESTING MECHANISM COST ANALYSIS COMPARISON ADVANTAGES FUTURE PLANS CONCLUSION

4. INTRODUCTION Electricity is a basic need for everyone Presently 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“

5. Piezoelectricity, discovered by Curie brothers in 1880, originated from the Greek word “piezenin”, meaning to press. PIEZOELECTRICITY - HISTORY PIERRE CURIE JACQUES CURIE

6. 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

7. 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.

8. CONSTRUCTION The 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.

9. 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.

10. 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.

11. Solution does not take up any public space Functions in all weather conditions Low maintenance after implementation Solution is integrated with infrastructure – theft and damage proof and interruption in power supply IPEG'S ADVANTAGES

12. 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

13. 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

14. 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)

15. 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.

16. 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 electricity is minimized which in turn saves the nature. ADVANTAGES

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

18. This is an excellent alternative to reach the increasing demands for electricity. It should be implemented in India also to accelerate the development.