POWER GENERATION FROM SPEED BREAKERS

PREPARED BYSTUDENTS OF INSTRUMENTATION ANDCONTROL ENGINEERING DEPARTMENTDEEPALISHEFALIPRIYANKACHETNA

introductionA large amount of energy is wasted at the speed breakers through friction , every time a vehicle passes over it.

So electricity can be generated using the vehicle weight (potential energy) as input.So, this is a small step to try to improve this situation.

OBJECTIVES

THE OBJECTIVE OF OUR PROJECT IS TO PRODUCE ELECTRICITY BY VERY LOW PRICE.

IN OUR COUNTRY THERE IS TOO MUCH SHORT FALL OF ELECTRICITY AND WE TRY TO OVER COME THIS PROBLEM BY NON CONVENTIONAL SOURCE OF ELECTRICITY.

SCOPE AND USESLow Budget electricity production

Less floor area

No obstruction to traffic

Easy maintenance

Suitable at parking of multiplexes, malls, toll booths, signals, etc.

Uses: Charging batteries and using them to light up the streets, etc.

BASIC PRINCIPLE

Simple energy conversion from Mechanical to Electrical.

To generate electricity using the vehicle weight (potential energy) as input

Possible using 3 different mechanisms:

I. Crank-shaft mechanismII. Roller mechanismIII. Rack- Pinion mechanism

POSSIBLE USING DIFFERENT MECHANISMS

Crank-shafts are required to be mounted on bearings which creates balancing problem leading to mechanical vibrations which in turn damage the bearings.Secondly as bearings are of sliding type, any occurrence of variable load( which is bit obvious in case of vehicles!!) leads to balancing problem.Roller mechanism has some different disadvantages.

Maintenance will be very difficultMight cause collision.

Rack-Pinion assembly gives good mounting convenience Maximum gear losses– 3 to 5%Efficiency– 95%

WORKING OF RACK AND PINION

The rack and pinion is used to convert between rotary and linear motion. Rack and pinion can convert from rotary to linear of from linear to rotary.

The diameter of the gear determines the speed that the rack moves as the pinion turns.

Rack and pinions are commonly used in the steering system of cars to convert the rotary motion of the steering wheel to the side to side motion in the wheels

BLOCK DIAGRAM

Constructional view

Working procedureHere the reciprocating motion of the speed-breaker is converted into rotary motion using the rack and pinion arrangement.

The axis of the pinion is coupled with the sprocket arrangement.

The axis of the smaller sprocket is coupled to a gear arrangement.

Finally the gear arrangement is coupled with the generator.

OUT PUT GRAPHSVOLTAGE GENERATED (VS) SPEED OF VEHICLE:

Speed of vehicle(km\hr)

Voltage generated(volts)

10 7.93

20 6.28

30 5.03

40 4.66

50 3.03

ADVANTAGES• Pollution free power generation.

• Simple construction, mature technology, and easy maintenance.

• No manual work necessary during generation.

• Energy available all year round.

• No fuel transportation problem.

• No consumption of any fossil fuel which is non-renewable source of energy.

FUTURE SCOPESuch speed breakers can be designed for heavy vehicles, thus increasing input torque and ultimately output of generator.

More suitable and compact mechanisms to enhance efficiency.

Practically implemented in New Jersy,China and Indonesia

CONCLUSIONThe existing source of energy such as coal, oil etc may not be adequate to meet the ever increasing energy demands. These conventional sources of energy are also depleting and may be exhausted.It is a non conventional type of producing the energy. This Project is a one step to path of exploring the possibilities of energy from several non-conventional energy sources

THANK YOU