ELECTRICAL ENGINEERING

ECO FRIENDLY POWER GENERATION THROUGH

SPEED BREAKERS

Team membersVohra Samir s. 120640109120Divera Yuvrajsinh k. 120640109121Mahida Pradhyumansinh n. 120640109123Solanki KishanKumar m. 120640109124

internal guide : prof.ashok d pateliya

Contents Introduction Objective Different mechanisms with specification Block diagram Flow chart Particular mechanisms with merit & demerit Component and its specification Scope and application Reference

introduction In the present day scenario power has become the

major need for human life. Energy is an important input in all the sectors of

any countries economy. The day-to-day increasing population and

decreasing conventional sources for power generation, provides a need to think on non-conventional energy resources.

Here in this project we are looking forward to conserve the kinetic energy that gone wasted, while vehicles move.

Continued.. The number of vehicles passing over speed

breaker on road is increasing day by day. Beneath speed breaker, setting up an electro-

mechanical unit known piston/water tank assembly could help us conserving this energy and use it for power generation.

This generated power can be stored, by using different electrical devices.

We can supply this energy to street lights, traffic lights, and nearby areas, and thus helps in country’s economy.

Objective In our country there is to much short fall of electricity and

we try to overcome this problem by non conventional source of electricity

To tap the potentially useful potential energy from vehicles plying on the road.

The objective of our project is to produce electricity by very low price.

POSSIBLE USING DIFFERENT MECHANISMS

SPRING COIL MECHANISM

RACK- PINION MECHANISM

CRANK-SHAFT MECHANISM

ROLLER MECHANISM

Why we use spring coil and rack pinion mechanism?Roller mechanism

Maintenance will be very difficult. Might cause collision.

Crank shaft mechanism Crank-shafts are required to be mounted on bearings

which creates balancing problem. Mechanical vibrations which in turn damage the bearings.

Because of above disadvantages We use ONLY SPRING COIL MECHANISM & RACK- PINION MECHANISM.

AMONG THIS WE USE SPRING COIL MECHANISM.

Block diagram

Flow chart

Spring coil mechanism

Working process Vehicle approaching the speed breaker

Continued..

Maximum load on the speed breaker is when the vehicle is on the middle of the speed breaker.

Due to this force is applied on the piston/spring mechanism in the water tank.

And then water is coming outside of the tank.

Continued.. Now one valve is there which measured the pressure &

Valve is maintaining of flow of water. This water is passing on rotor blade which rotates & one

chain belt is there so Generator is also rotates with rotor. This generator generates electricity which can be used for

lighting of the lamps on the road or it may be stored in the battery and can be converted in AC current using inverter and used for lighting of the lamps, signals sign boards on the road.

Component Piston/spring arrangement Water tank Turbine DC generator Battery/inverter

DESIGN OF THE SPRING The actual height of spring is 0.3m before loading. The deflection of the spring is given by δ = 64 w *n*N*R^3 /(Gd^4) Where, deflection (in our case maximum δ =0.1m) w=designed load R= mean diameter of coil d =diameter of wire n=no of spring turns G= Modulus of rigidity = 8*10^4 N/mm2 N= No. of springs The no of turns in the spring to get the deflection of 0.1m

is given by n= δGd^4/(64 w*N*R^3)

Continued.. Based on the strength, functional requirements and the

properties of the candidate materials as earlier stated, Stainless steel was selected as the most suitable material for its excellent ability to withstand high stress, good fatigue resistance and long endurance for shock and impact loads.

The spring used is in helical shape. The spring stiffness and spring deflection for the chosen

spring are 17500 N/m and 0.01M.

Turbine

A small pelton wheel turbine is used . A pelton turbine consists of a set of buckets or

cups

mounted on a hub. A pelton turbine operates in air with the wheel

driven

by jets of high pressure water hitting the buckets or cups.

Control Valve

A control valve or non-return valve is a mechanical device, which normally allows fluid to flow through it in only one direction.

Control valves are two-port valves, meaning they have two openings in the body, one for fluid to enter and the other for fluid to leave.

 

Continued..

The mechanism of control valve is described in figure .

Fluid flow in the desired direction opens the valve, while backflow forces the valve closed.

 

 

Generator

An electrical Generator is a machine which converts mechanical energy into electrical energy (or power).

For this model a permanent magnet DC generator with drum type armature, wave winding is suitable which is shown in fig

Specification: voltage 12volt, 1200 rpm ,DC generator

VOLTAGE 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

VOLTAGE GENERATED (VS) LOADVehicle load

(Kg)Max. Vol. generated

(volts)

Mean Power(Watt)

Charging Time(sec)

205 10.73 7.99 3.9

250 12.83 9.47 4

320 13.05 10.5 4.1

400 14.91 11.21 4.2

BATTERY

The battery used in the project work is rated for 6AH at 12V.

It is a free type rechargeable battery generally called as secondary cell. It can supply continuously for a specified interval time.

Current ratings varies in the case of lead-acid battery with high ampere –hour capacity is called heavy duty battery.

MERITES DEMERITES Low Budget electricity

production Less floor area No obstruction to

traffic Suitable at parking of

multiplexes, malls, toll booths, signals, etc.

We have to check mechanism from time to time

It can get rusted in rainy season

May not work with light weight vehicles

Less quantity

SCOPE AND applications

This mechanism is very economical and easy to install.

Two protocols of this type of speed breakers are developed in India .not practically implemented till date.

Practically implemented in New Jersy, China and Indonesia.

Lots of researches and investigations are going on to practically utilize this technique.

Reference http://www.ijedr.org/papers/IJEDR1401219.pdf http://www.slideshare.net/biswajitcet13/power-generation-

from-speed-breakers http://files.engineering.com/download.aspx?

folder=1bb7f012-1965-4a79-b3f8-b62e6cdea29&file=POWER_HUMP.docx

Conclusion The 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.

These are some non-conventional methods of producing energy. This

project is a one step to path of exploring the possibilities of energy from

several non-conventional energy sources.

THANK YOU