Energy generation through speed humps

In current scenario demand of power is increasing day by day with increasing population. On the other hand, energy crisis is also a main issue of today?s life and all there is a shortage of conventional energy resources due to its large usage. So, we have to sort out this problem with a technique wh

Project Title

Energy generation through speed humps

Project Area of Specialization

Electrical/Electronic Engineering

Project Summary

In current scenario demand of power is increasing day by day with increasing population. On the other hand, energy crisis is also a main issue of today’s life and all there is a shortage of conventional energy resources due to its large usage. So, we have to sort out this problem with a technique which will not only overcome this energy crisis but also should be eco- friendly. Many conventional resources are creating pollution so that’s why focus is towards eco- friendly solution.

This project emphasizes on an idea which shows that power could be generated by specially designed speed breakers. A large amount of energy is being wasted on roads on daily basis in different forms which could be used to generate power and energy can be stored in batteries. This project shows clearly how we can generate power by using rack- pinion method where basically linear motion converted into rotatory motion and then can be used to generate electricity. Large amount of electricity can be generated using this method and if implemented this would be beneficial for government.

It can be implemented at metropolitan cities & that more electric power is produced. Arrangement of whole setup is easier. The stored electricity could satisfy the daily requirement of electric power. Suitable at parking of multiplexes, malls, toll booths, signals, etc. Such speed breakers can be designed for heavy vehicles, thus increasing input torque and ultimately the output of generator. More suitable and compact mechanisms to enhance efficiency.

Project Objectives

• Convert kinetic energy of vehicles into electrical energy.
• Useful alternative energy technology for generating clean electricity from millions of vehicles on roadways.
• To design the project in minimum cost

Project Implementation Method

Rack-Pinion mechanism

Rack-pinion is a mechanical component which is used to transform linear motion into rotary motion. Rack-pinion are used under the speed breaker when vehicle passes over the road and speed breaker it causes the speed breaker to move downwards and with this motion rack is also pressed downwards; with the movement of rack pinion rotates and it rotates the shaft on which it is connected with a certain rpm. This rotation can be further enhanced using gears with certain ratio or by using chain sprocket. Now this rotary motion is sufficient enough to run the DC generator.

Why rack-pinion is used

• Its efficiency is greater than other both mechanisms.
  • Its gives good mounting convenience.
  • Maximum gear losses could be in range 3% to 5%. Efficiency is almost 70-80 % 

The generated power can be used for general purpose like streetlights, traffic signals. The electrical output can be improved by arranging these power humps in series this generated power can be amplified and stored by using different electric devices. The maintenance cost of hump is almost nullified. By adopting this arrangement, we can satisfy the future demands to some extent. Suitable at parking of multiplexes, malls, toll booths, signals, etc. Charging

batteries and using them to light up the streets, etc. Such speed breakers can be designed for heavy vehicles, thus increasing input torque and ultimately output of generator. More suitable and compact mechanism to enhance efficiency

Benefits of the Project

• Low Budget electricity production.
• No obstruction to traffic.
• Suitable for parking at multiplexes, malls, toll booths, signals, etc.
• Suitable for all season.
• No use of non-renewable energy sources.

Technical Details of Final Deliverable

Theoretical Calculations

 Parameters Value formula The height of the flip plate 12 cm Assumption [37] Watts of street light 55 watt each P = v ? i [38] Total required output watts for 4 lights to be lit up 8 hours 1760 watts No. of lights*watts for each light*turn ON hours Mass of vehicle 200 kg approximately Approximation and Compared force on hump 1962N M*g Work for one pushing force 1962*0.12 0= 235.4 J F*d Output power for one push 235.4/60 = 3.92 watt Work time for one hour 235.4 watts 3.92*60 for 8 hours per day 1883 watts 235.4*8 The diameter of 4th gear 24 cm Measured Rev. of pinion attached with rack 47.7 RPM ?1 ?2 = ?2 ?3 = ?4 ?5 Velocity of rack 14.9 cm/sec ???? = ???? ? ???? Time taken by rack for downward motion 0.8 sec d = 12 cm

According to the width of the hump if a car passes over it then the distance covered will be 47.25 cm if the velocity of a car remain between 2 km/h to 5 km/h, choosing the velocity to be 2 km/h and time 0.85 sec. Other necessary calculations were done as follows Force present on rack = 200*9.8 = 1960 N Work = W = 1960*0.15 = 294 J Power = ???????????????? ???????????????? = 294 0.85 = 345.88 W Revolution of pinion for 0.85 sec = 0.6 As no of teeth of pinion is 30 and no. of teeth of rack is 18 For 60 seconds, RPM gain will be 42.35 RPM Torque= p(60) 2 ? ? ? n = 345.8 ? 60 2 ? 3.1416 ? 42.35 T = 77.99 Nm Angular velocity = 4.43 rad/s As the gear ratio is 4 so the RPM at second shaft will be 169.4 RPM Torque for the second shaft will be 19.93 Nm Angular velocity = 17.73 rad/s RPM on the generator shaft will become (169.4)*(4) =679.6 RPM When no load then torque = 4.855 N.m. Angular velocity = 67.96 rad/s When load on then torque = 10 N.m. RPM find by tachometer = 320 Angular velocity = 32 rad/s Mechanical power = 10*32 = 320 w Electrical power = V * I = 11.25*12 = 135w

Final Deliverable of the Project

Hardware System

Core Industry

Energy

Other Industries

Core Technology

Others

Other Technologies

Sustainable Development Goals

Affordable and Clean Energy

Required Resources

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