Gaurav Seminar 2(1)

8/3/2019 Gaurav Seminar 2(1)

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Submitted by:-

Gaurav David Benjamin BE.(Mech). Enrll no:0532ME101017

Seminar

on

Power production

usingSPEEDBREAKER

Submitted to:-

Miss Mohita ChoubeyMr.AslamKhanMr.Dheeraj kr.


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Introduction:Introduction:

First of all what does electricity mean to us??? Electricity- secondary source of energy i.e. converted

from other sources. We need it for every small thing, still notice its

importance only during load shedding.

The number of vehicles passing over the speedbreaker in roads is increasing day by day.

There is possibility of tapping the energy andgenerating power by making the speed breaker as apower generation unit.

The generated power can be used for the lamps nearthe speed breakers and this will be a great boon forthe rural villages too.


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BASIC PRINCIPLE:BASIC PRINCIPLE:

Simple energy conversion fromMechanical to Electrical.

To generate electricity using the

vehicle weight (potential energy)as input

Possible using 3 different

mechanisms:I. Crank-shaft mechanism

II.Roller mechanism

III.Rack- Pinion mechanism


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Roller mechanism has some

different disadvantages.

Maintenance will be very difficult

Might cause collision.


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Why rack and pinion?

Rack-Pinion assembly gives goodmounting convenience

Maximum gear losses 3 to 5%

Efficiency 95%


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Constuction:

The project is concerned with generation of electricityfrom speed breakers-like set up.

Speed breaker - setup is there by transmitted to rackandpinion arrangements.

Reciprocating motion of the speed-breaker isconverted into rotary motion using the rackandpinion arrangement.

The axis of the pinion is coupled with the sprocketarrangement.

The sprocket arrangement is made of two sprockets.

One of larger size and the other of smaller size. Connected by means of a chain which serves intransmitting power from the larger sprocket to thesmaller sprocket.

As the power is transmitted from the larger sprocketto the smaller sprocket, the speed that is available at

the larger sprocket is relatively multiplied at therotation of the smaller sprocket.


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Block diagram:


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Working

The axis of the smaller sprocket is coupled to a geararrangement. Here we have two gears with differentdiameters.

The gear wheel with the larger dimension is coupled to theaxis of the smaller sprocket. Hence the speed that has beenmultiplied at the smaller sprocket wheel is passed on to thisgear wheel of larger dimension.

So as the larger gear rotates at the multiplied speed of thesmaller sprocket, the smaller gear following the larger gearstill multiplies the speed to more intensity.

Hence, although the speed due to the rotary motion achievedat the larger sprocket wheel is less, as the power istransmitted to gears, finally the speed is multiplied to ahigher speed.

This speed which is sufficient to rotate the rotor of agenerator is fed into to the rotor of a generator.

The rotor which rotates within a static magnetic stator cutsthe magnetic flux surrounding it, thus producing the electricmotive force (emf).

This generated emf is then sent to an inverter, where the

generated emf is regulated. This regulated emf is now sent tothe storage battery where it is stored during the day time.


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Image:Image:


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Calculation

Let us consider,OUTPUTPOWER CALCULATIONS:

The mass of a vehicle moving over the speed breaker

=250Kg (Approximately)

Height of speed brake =10 cm

Work done=Force x Distance

Here,

Force=Weight of the Body

=250 Kg x 9.81

=2452.5 N

Distance traveled by the body = Height of the speed brake

=10 m

Output power=Work done/Sec= (2452.5 x 0.10)/60

=4.0875 Watts (For One pushing force)

Power developed for 1 vehicle passing over the speed

breaker arrangement for one minute= 4.0875 watts

Power developed for 60 minutes (1 hr) =245.25 watts

Power developed for 24 hours=5.866 Kw

This power is sufficient to burn four street lights in the

roads in the night time.


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Scope, Merits and UsesScope, Merits and Uses

Low Budget electricityproduction

Less floor area

No obstruction to trafficEasy maintenance

Suitable at parking of

multiplexes, malls, toll booths,signals, etc.

Uses: Charging batteries and

using them to light up the


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Challenges we faced!!Challenges we faced!!

Selecting suitable generator.Selection of springs.

Achieving proper balance of

speed and torque.


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What we achieved???What we achieved???

Constructed our own generatorby applying the basic principle.

Although we got less electrical

output, we have successfullyexplained our idea of generatingelectricity from speed breaker.


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Future Scope:Future Scope:

Such speed breakers can bedesigned for heavy vehicles, thusincreasing input torque and

ultimately output of generator.More suitable and compact

mechanisms to enhance

efficiency.


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Gaurav Seminar 2(1)

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