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A
PROJECT REPORT
ON
“ELECTRICITY GENERATION FROM SPEED BREAKERS AND
WINDMILL”
Submitted in the Partial Fulfilment of the Requirement For The Award Of
Degree Of
BACHELOR OF TECHNOLOGY
IN
MECHANICAL ENGINEERING
(Uttar Pradesh Technical University, LUCKNOW)
GUIDED BY
SUBMITTED BY
NAME ROLL NUMBER
ABHISHEK TRIPATHI 1032940002
ANIRUDH KUMAR 1032940005
MAYANK CHAUHAN 1032940030
VIABHAV AGNIHOTRI 1032940050
DEPARTMENT OF MECHANICAL ENGINEERING
GHAZIABAD INSTITUTE OF ENGINEERING & TECHNOLOGY
GHAZIABAD
2013-2014
ACKNOWLEDGEMENT
Completing a task is never a one man’s effort. It is the result of invaluable contribution of a
number of individuals and our project too is the outcome of sincere team work.
We extend our sincere thanks to our project guide ( ), who inspite of being busy round the clock,
helped, motivated and guided us. He has contributed to a great measure in surmounting all the
hurdles faced during the completion of the project.
We also acknowledge the inspiration and encouragement provided by our Head of Department, (
), who has directly or indirectly helped in our endeavour. We take this opportunity to express our
sincere gratitude to our honourable Director, ( )and all other lecturers, the staff of Department of
Mechanical and the staff of college library.
We would like to extend special thanks to, of MECHANICAL Department, GIMTECH
Ghaziabad .
And finally, our deepest gratitude to our parents and well wishers for their unfailing emotional
support during the project. Lastly, we owe greatly to the almighty God who is always there as the
guiding force behind all creations of the world and without whose wish, not a leaf can flutter.
Submitted with regards,
ABHISHEK TRIPATHI
ANIRUDH KUMAR
MAYANK CHAUHAN
VIABHAV AGNIHOTRI
i
Forwarding Letter
Forwarded herewith is the Project Report entitled
“ELECTRICITY GENERATION FROM SPEED BREAKERS AND
WINDMILL”
Submitted by ABHISHEK TRIPATHI, ANIRUDH KUMAR
,MAYANK CHAUHAN,VAIBHAV AGNIHOTRI, studentsof this
institution. The Project Report is in the partial fulfilmentof the
requirements towards the award of the Degree of Bachelor of Technology
in Mechanical Engineering, (U.P. Technical University, Lucknow).
It has been carried out under the guidance and supervisionof
( ), Department of Mechanical Engineering, GIMTECH. Ghaziabad.
Forwarded By
GIMTECH,Ghaziabad
ii
CERTIFICATE
This is to certify that the work entitled
“ELECTRICITY GENERATION FROM SPEED BREAKERS AND
WINDMILL”
was carriedout by ABHISHEK TRIPATHI,ANIRUDH KUMAR,MAYANK
CHAUHAN,VAIBHAVAGNIHOTRI ,studentsof B.Tech(FinalYear) ,
Department of MechanicalEngineering,undermy supervisionand guidance.
We are absolutelysatisfiedwith dissertation on the project, whichwas
presented in the Departmentof MechanicalEngineering,GIMTECH,
Ghaziabad,duringthe academicyear2013-14
This work is in partialfulfilmentof the requirementtowardsthe awardof the
Degree of Bachelor of Technology in Mechanical Engineering, (U.P Technical
University, Lucknow).
iii
ABSTRACT
The experimental set up has been fabricated to utilize energy lost at speed breaker
by vehicle .We have calculated energy lost by vehicle at speed 10 kmhr, 12kmhr,
15kmhr and we utilize the energy lost, with the efficiency of 0.4%, 0.45% ,0.48%
respectively.
It has been concluded that speed of roller is directly proportional to Electrical
energy produced wind energy is directly proportional to square of velocity of wind.
iv
LIST OF FIGURES
1. WOODEN RAMP
2. METAL ROLLER
3. CHAIN AND SPROCKET
4. FREEWHEEL
5. FREEWHEEL UNIT
6. PULLEY
7. DYNAMO
8. WIND MILL
9. LIGHT EMITTING DIODE
10. BATTERY
v
LIST OF TABLES
1. MECHANICAL APPARATUS
2. ELECTRICAL APPARATUS
vi
TABLE OF CONTENTS
ACKNOWLEDGEMENT i
FORWARD LETTER ii
CERTIFICATE iii
ABSTRACT iv
List of Figures v
List of Tables vi
1. INTRODUCTION
2. FABRICATION
SPECIFICATIONAND MAIN PARTS
2.1 WOODEN RAMP.
2.2 METAL ROLLER.
2.3 CHAIN AND SPROCKET MECHANISM
2.4 FREEWEEL MECHANISM.
2.5 BELT. AND PULLEY
2.6 DYNAMO
2.7 WIND MILL
2.8 LIGHT EMITTING DIODE
2.9 BATTERY
3. WORKING PRICIPLE
4. TESTING AND RESULT
5. CALCULATION
6. CONCLUSION
7. AREA OF UTILISATION AND FUTURE SCOPE
8. REFERENCES
9. BIBILIOGRAPHY
INTRODUCTION
Amelioration of standard of Living and industrialization leap up the pressure on the conventional
sources of power. Depletion of conventional sources becomes a problem in present world. And
ever rising cost of conventional fuel may be major impediment in economic and social growth of
third world nations.
All of us (developing and developed nations) are searching for new and newer sources of energy
and its efficient use. Moving towards modernization, luxuries become necessities which lead the
people towards the need of personal vehicle thus contributing to the substantially increased
traffic density. This increased traffic density can be utilized for generation of Electricity by using
an innovative Technique.
In this project work an attempt has been made to fabricate a ramp, by which we can utilize the
energy in power generation. This may further be used in battery charging.
The efficiency of our machine is some where 0.4 to 0.5 percent. It is seems a very small number
but if we think in terms of number of vehicles and time it will be a huge amount of energy saved.
This type of ramp is best suited for the places where the speed breaker is a necessity. The places
like Toll bridges and vehicle parking stands are best for its utilization.
1
FABRICATION DETAILS
FABRICATION DETAILS
An iron roller is fixed on a wooden ramp on which vehicle passes. As vehicle passes over it, it
starts moving. A linkage is provided which transfer the motion to a stepper motor for electricity
generation.
All parts are described in detail on their respective places.
2. MAIN PARTS THEIR SPECIFICATIONS
2.1 WOODEN RAMP.
2.2 METAL ROLLER.
2.3 CHAIN AND SPROCKET MECHANISM
2.4 FREEWEEL MECHANISM.
2.5 BELT. AND PULLEY
2.6 DYNAMO
2.7 WIND MILL
2.8 LIGHT EMITTINGDIODE
2.9 BATTERY
2
2.1 WOODEN RAMP
The whole apparatus is mounted on wooden board and the specifications of the wooden
Boards are
Figure 1 - Wooden Ramp
Wooden board: 910mm * 1250mm
Platform: 500mm * 600mm
Thickness of board: 20 mm
Platform inclined at 25 degree from ground from both sides.
3
2.2 METAL ROLLER
Roller is made of iron pipe with metal strips welded on it to give better surface contact between
vehicle tire and roller.
Figure 2: Metal Roller
SPECIFICATIONS
Outside diameter of metal roller 165 mm
Inside diameter of metal roller 155 mm
Length of roller: 520 mm
Diameter of shaft: 34mm
Thickness of metal strip: 6mm
No. of metal strip: 10
4
2.3 CHAIN AND SPROCKET MECHANISM
Chains are made up of number of rigid links which are hinged together by pin
Joints in order to provide the necessary flexibility for warping round driving and
driven wheels. These wheels have projecting teeth of special profile and fir into
the corresponding recesses in the links of chain as shown in figure. The toothed
Wheels are known as sprocket wheels or simply sprocket.
The chains are mostly used for transmit motion and power from one shaft to another,
when the centre distance between their shafts is short such as in bicycle, motorcycle,
agriculture machinery, etc
In the case of bicycle chains by varying the size (and therefore, the tooth count) of the
sprockets on each side of the chain, we can modify the overall gear ratio of the chain
drive. By providing different-sized driving sprockets and different-sized driven sprockets.
Figure.3: Chain and Sprocket
5
2.4 FREEWHEEL
In mechanical or automotive engineering, a freewheel is a device in a transmission
that disengages the driveshaft from the driven shaft when the driven shaft rotates
Faster than the driveshaft. This condition exists in a bicycle going downhill when
the rider holds his feet still, no longer pushing the pedals. Without a freewheel,
with a fixed connection between the rear wheel and the pedals, the rear wheel
Would drive the pedals round.The simplest freewheel device consists of two saw-toothed,
spring-loaded discs pressing against each other with the toothed sides together, somewhat
like a Ratchet. Rotating in one direction, the saw teeth of the drive disc lock with the
teeth of the driven disc, making it rotate at the same speed. If the drive disc slows down
or stops rotating, the teeth of the driven disc slip over the drive
Disc teeth and continue rotating.
Figure 4: Freewheel Figure 5: Freewheel Unit
6
2.5 PULLEY AND BELT
A pulley is a wheel with a groove along its edge, the pulleys are used to transmit
power from one shaft to another by means of flat belts or ropes. Since the velocity ratio
is inverse ratio of diameter of driving and driven pulleys.
The belts are used to transmit power from one shaft to another by means of pulley
which rotate at the same speed or different speed.
Figure 6 Pulley
SPECIFICATIONS
Diameter of Driving Pulley = 330 mm
Diameter of Driven Pulley = 65 mm
Length of Belt = 1425 mm
7
2.6 DYNAMO
It is an electrical generator that produces direct current with the use of a commutator.Dynamos
were the first electrical generators capable of delivering power for industry and the foundation
upon which many other later electric power conversion devices were based ,including the electric
motor,the alternating current alternator,and the rotary converter.Today,the simpler alternator
dominates large power scale power generation,for efficiency,reliability and cost reasons.
Figure 7: Dynamo
SPECIFICATIONS
NUMBER OF DYNAMOS - 2
VOLTAGE – 12V
8
2.7 WIND MILL
A wind mill is a machine that converts the energy of wind into rotational energy by means of
vanes called blades or vanes. The reason for the name “WIND MILL” is that the devices
originally were developed for milling grains for food production; the name stuck when in the
course of history windmill machinery was adapted to supply power for many industrial and
agricultural need other than milling. The majority of modern wind mills take the form of wind
turbines used to pump water, either for land drainage or to extract groundwater.
Figure 8 : windmill
9
2.8 LIGHT EMITTING DIODE
A light emitting diode (LED) is a two lead semi conductor light source that resembles a back pn
junction diode; expect that an LED also emits light. When an LED’s anode lead has a voltage
that is more positive than its cathode lead by at least the LED’s forward voltage drop, current
flows. Electrons are able to recombine with holes within the device, releasing energy in the form
of photons. This effect is called ELECTROLUMINESCENCE and the colour of light
(corresponding to the energy of the photons) is determined by the energy band gap of the
semiconductor.
Figure 9: LED
SPECIFICATIONS
Number of LED used - 3
10
2.9 BATTERY
Figure 10 : Battery
SPECIFICATION
Number of battery used: 1
Voltage: 500v
11
WORKING PRINCIPLE
LAW OF INERTIA
 According to Newton’s law of inertia, force is designated as the product of mass and
acceleration, where acceleration is measured relative to an inertial reference.
Newton’ law F =M*A.
LAW OF DYNAMIC FRICTION
 The stage when the body acted upon by an external force is just on the point of moving,
is called limiting equilibrium of the body. The force of friction which is offered by the
rough surface at the stage of limiting equilibrium, is called limiting friction. When a
body starts moving, the force of friction offered by the surface is called the dynamic
friction
.
 When a body is at the point of limiting equilibrium the force of friction is maximum. The
angle which the resultant of the maximum force of friction and normal reaction make
with the normal reaction is called the angle of friction. It is denoted by tan lamda
Tan lambda = Maximum force of friction/ Normal reaction.
 The ratio of the limiting friction and normal reaction is called coefficient of friction.
12
BELT AND CHAIN
 Belt and chain are used for the power transmission from one shaft to another shaft.
 According to law of belting, the centre line of the belt as it approaches the pulley must lie
in a plane perpendicular to the axis of that pulley, or must lay in the plane of the pulley,
otherwise the belt will run off the pulley.
Power transmitted by the belt = (T1 – T2)*V/75.
 If T be the number of teeth on chain, p the pitch, d the pitch circle diameter, then
D = p cosec (180/T).
 Gears are mainly used for transmission of power and motion; gears are used when
positive drives are necessary and when the centre distance is relatively short.
FARADAY LAW OF ELECTRICITY
 Electric current flows from positive to negative polarity but electrons flow reverse
direction. Current flows when electrons find a path to move along. Electricity is
measured in ampere.
 Coulomb is the basic quantity of electricity. One coulomb equals 6.25 billion electrons.
WORKING
 As the vehicle passes over the ramp, there‘s is a surface contact between vehicle tires
and roller, which will tend to rotate the roller, it is free to rotate as it is supported on
bearings which are mounted on T-shape supports which are bolted to wooden base.
13
14
TESTING AND RESULTS
OBSERVATION TABLE
MECHANICAL APPARTUS
Serial No. Velocity of
vehicle (m/sec)
Angular speed
of vehicle
tire(rad./sec)
Angular speed
of roller
(rad./sec)
Rotational
kinetic energy
(Joules)
1 2.78 .00926 .0336 4541
2 3.32 .01108 .0401 6469
3 4.155 .0138 .0503 10057
Table 1
ELECTRICAL APPARATUS
Serial No. Rotational kinetic
energy ofroller(J)
Voltage
(volts)
Current
(ampere)
Time
(seconds)
Electrical
energy(J)
Efficiency
(percent)
1 4541 5 .8 4 16 .4
2 6469 5.5 1 4 22 .45
3 10057 6.4 1.2 4 31 .48
Table 2
14
CALCULATIONS:
Here,
w1 = Angular Speed of Vehicle Tire (rad/sec)
w2 = Angular Speed of Roller (rad/sec)
d1 = Diameter of Tire (mm)
d2 = Diameter of Roller (mm)
v = Velocity of Vehicle (m/sec)
I = Moment of Inertia of Roller (pipe)
Do = Outside Diameter of Roller (mm)
Di = Inside Diameter of Roller (mm)
V = Voltage (volts)
I = Current (Ampere)
T = Time (seconds)
R = Rotational Kinetic Energy of Roller (Joules)
E = Electrical Energy (Joules)
When Velocity ofVehicle is, v=2.78m/sec
d1=600mm
d2=165mm
And v=r*w.
So, w1= 2.78 / (d1/ 2)
= 2.78 / (.600 / 2)
= .00926 rad / sec
And, (w1/w2) = (d2/d1)
So, w2= (.0926*600) / 165
= .0336 radian / sec
15
Moment of Inertia of Roller, I= (3.14*(do4-di4)) / 64
= d0= 165mm
= did = 155mm
=8046250mm4
Rotational Kinetic Energy of Roller= (I*w2*w2) / 2
= (8046250*.0336*.0336) / 2
= 4541 J
Electrical energy= V*I*t.
= 5*.8*4
= 16J
Efficiency=Electrical Energy / Rotational Kinetic Energy
=16 / 4541
=.004
=.4percent
When Velocity ofVehicle is, v=3.32m/sec
d1=600mm
d2=165mm
And v = r*w.
So, w1 = 3.32 / (d1/2)
= 3.32 / (.600/2)
= .01108 radian/sec
And, (w1/w2) = (d2/d1)
So, w2 = (.01108*600)/165
= .0401rad/sec
16
Moment of Inertia of Roller, I= (3.14*(do4-di4)) / 64
= d0=165mm
= did =155mm
=8046250mm4
Rotational Kinetic Energy of Roller= (I*w2*w2)/2
= (8046250*.0401*.0401) / 2
= 6469 J
Electrical Energy = V*I*t
= 5.5*1*4
= 22 J
Efficiency=Electrical Energy / Rotational Kinetic Energy
= 22 / 6469
= .0045
= .45percent
When Velocity ofVehicle is, v=4.155m/sec
d1=600mm
d2=165mm
And v = r*w.
So, w1 = 4.155 / (d1/2)
= 4.155 / (.600/2)
= .0138 radian/sec
And, (w1/w2) = (d2/d1)
So, w2 = (.0138*600)/165
= .0503 radian/sec
17
Moment of Inertia of Roller, I = (3.14*(do4-di4))/64
= do =165 mm
= di =155 mm
= 8046250 mm4
Rotational Kinetic Energy of Roller = (I*w2*w2)/2
= (8046250*.0503*.0503)/2
= 10057J
Electrical Energy = V*I*t.
= 6.8*1.2*4
= 34 J
Efficiency= Electrical Energy / Rotational Kinetic Energy
= 34 / 10057
= .0048
= .48percent
18
GRAPH
19
0
5
10
15
20
25
30
35
0 2 4 6
Electricalenergy(J)
Velocity(m/sec)
Velocity vs Energy
Electrical
Energy
Linear
(Electrical
Energy)
CONCLUSION
We concluded that, electricity is generated by our project. By implementing we
Observed that on moving a vehicle over the roller speeds varying from 10-15 km/hr,
And in this region 5-7 volts is being produced. Speed Vs energy plot shows that energy
produced is directly proportional to speed but there will be a limit of Mechanical
Instruments.
The efficiency of air set ups is about 0.4 to 0.5%, which seems a very small value but if we see it
in terms of numbers of vehicles passed per unit time, there will be huge amount
of energy saved.
20
AREA OF UTILITY & FUTURE SCOPE
Electric ramp can be utilized on Express Toll Stoppages for en-lightning the path lights and also
for the ticketing at the pickets. It can be used in rural areas contributing towards high paced
development of villages. As we know most of the villages having electricity problem. So it can
play a major role in en-lightning the streets of villages as well fulfills the basic need of
electricity in villages.
A part from that, energy generated from this should meet the environmental standards and cost-
effective. And finally would like to sum up with the fact that scarcity of electricity in India is
major obstruction towards the development of our country and hitting on the pockets of common
man with increase in the consumption and the prices. So, conservation could be one way to do
that however the other and better way would be to install these electricity generating ramps
where ever possible thus helping our society with catastrophic problem of electricity, rather
government should take an initiative and all the cooperative societies to help and ward off this
problem and making it a success
**THE ELECTRICITY GENERATOR RAMPS**.
If we use concert structure in fabrication of speed breaker on the roads, It will become more
beneficial. The structure of concert works efficiently and reliably. We can also use more rollers
instead of one; also leap up the size of the roller to generate more electricity.
21
REFERENCES
1. R.S. Khurmi and J.K.Gupta, Kinematics of Machine, Eurasia Publishing House
2. Strength of Material by: Dr. Sadhu Singh, Danpat Publications Delhi
3. R.S. Khurmi and J.K. Gupta, Machine Design, Eurasia Publishing House Ltd
4. Theraja B.L., Electrical Teachnology vol.II, New Delhi, S. Chand & Co., 2005
5. The World Book Encylopedia vol. II, USA, World Book Inc., 1992
6. PSGDesign Data,Coimbatore, PSG College of Tech.,2000.
WEB SITES
7. http://en.wikipedia.org/wiki/Chain_drive
8. http://en.wikipedia.org/wiki/sproket.
9. http://en.wikipedia.org/wiki/Image:Freewheel.jpg
10. http://en.wikipedia.org/wiki/freewheel
22
BIBLIOGRAPHY
1. ADVANCED ENGINEERING
2. NEW SCIENCE EXPERIMENTS
3. ENERGY CONSERVATION TECHNIQUES.
23

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Report speed breaker

  • 1. A PROJECT REPORT ON “ELECTRICITY GENERATION FROM SPEED BREAKERS AND WINDMILL” Submitted in the Partial Fulfilment of the Requirement For The Award Of Degree Of BACHELOR OF TECHNOLOGY IN MECHANICAL ENGINEERING (Uttar Pradesh Technical University, LUCKNOW) GUIDED BY SUBMITTED BY NAME ROLL NUMBER ABHISHEK TRIPATHI 1032940002 ANIRUDH KUMAR 1032940005 MAYANK CHAUHAN 1032940030 VIABHAV AGNIHOTRI 1032940050 DEPARTMENT OF MECHANICAL ENGINEERING GHAZIABAD INSTITUTE OF ENGINEERING & TECHNOLOGY GHAZIABAD 2013-2014
  • 2. ACKNOWLEDGEMENT Completing a task is never a one man’s effort. It is the result of invaluable contribution of a number of individuals and our project too is the outcome of sincere team work. We extend our sincere thanks to our project guide ( ), who inspite of being busy round the clock, helped, motivated and guided us. He has contributed to a great measure in surmounting all the hurdles faced during the completion of the project. We also acknowledge the inspiration and encouragement provided by our Head of Department, ( ), who has directly or indirectly helped in our endeavour. We take this opportunity to express our sincere gratitude to our honourable Director, ( )and all other lecturers, the staff of Department of Mechanical and the staff of college library. We would like to extend special thanks to, of MECHANICAL Department, GIMTECH Ghaziabad . And finally, our deepest gratitude to our parents and well wishers for their unfailing emotional support during the project. Lastly, we owe greatly to the almighty God who is always there as the guiding force behind all creations of the world and without whose wish, not a leaf can flutter. Submitted with regards, ABHISHEK TRIPATHI ANIRUDH KUMAR MAYANK CHAUHAN VIABHAV AGNIHOTRI i
  • 3. Forwarding Letter Forwarded herewith is the Project Report entitled “ELECTRICITY GENERATION FROM SPEED BREAKERS AND WINDMILL” Submitted by ABHISHEK TRIPATHI, ANIRUDH KUMAR ,MAYANK CHAUHAN,VAIBHAV AGNIHOTRI, studentsof this institution. The Project Report is in the partial fulfilmentof the requirements towards the award of the Degree of Bachelor of Technology in Mechanical Engineering, (U.P. Technical University, Lucknow). It has been carried out under the guidance and supervisionof ( ), Department of Mechanical Engineering, GIMTECH. Ghaziabad. Forwarded By GIMTECH,Ghaziabad ii
  • 4. CERTIFICATE This is to certify that the work entitled “ELECTRICITY GENERATION FROM SPEED BREAKERS AND WINDMILL” was carriedout by ABHISHEK TRIPATHI,ANIRUDH KUMAR,MAYANK CHAUHAN,VAIBHAVAGNIHOTRI ,studentsof B.Tech(FinalYear) , Department of MechanicalEngineering,undermy supervisionand guidance. We are absolutelysatisfiedwith dissertation on the project, whichwas presented in the Departmentof MechanicalEngineering,GIMTECH, Ghaziabad,duringthe academicyear2013-14 This work is in partialfulfilmentof the requirementtowardsthe awardof the Degree of Bachelor of Technology in Mechanical Engineering, (U.P Technical University, Lucknow). iii
  • 5. ABSTRACT The experimental set up has been fabricated to utilize energy lost at speed breaker by vehicle .We have calculated energy lost by vehicle at speed 10 kmhr, 12kmhr, 15kmhr and we utilize the energy lost, with the efficiency of 0.4%, 0.45% ,0.48% respectively. It has been concluded that speed of roller is directly proportional to Electrical energy produced wind energy is directly proportional to square of velocity of wind. iv
  • 6. LIST OF FIGURES 1. WOODEN RAMP 2. METAL ROLLER 3. CHAIN AND SPROCKET 4. FREEWHEEL 5. FREEWHEEL UNIT 6. PULLEY 7. DYNAMO 8. WIND MILL 9. LIGHT EMITTING DIODE 10. BATTERY v
  • 7. LIST OF TABLES 1. MECHANICAL APPARATUS 2. ELECTRICAL APPARATUS vi
  • 8. TABLE OF CONTENTS ACKNOWLEDGEMENT i FORWARD LETTER ii CERTIFICATE iii ABSTRACT iv List of Figures v List of Tables vi 1. INTRODUCTION 2. FABRICATION SPECIFICATIONAND MAIN PARTS 2.1 WOODEN RAMP. 2.2 METAL ROLLER. 2.3 CHAIN AND SPROCKET MECHANISM 2.4 FREEWEEL MECHANISM. 2.5 BELT. AND PULLEY 2.6 DYNAMO 2.7 WIND MILL 2.8 LIGHT EMITTING DIODE 2.9 BATTERY 3. WORKING PRICIPLE 4. TESTING AND RESULT 5. CALCULATION 6. CONCLUSION 7. AREA OF UTILISATION AND FUTURE SCOPE 8. REFERENCES 9. BIBILIOGRAPHY
  • 9. INTRODUCTION Amelioration of standard of Living and industrialization leap up the pressure on the conventional sources of power. Depletion of conventional sources becomes a problem in present world. And ever rising cost of conventional fuel may be major impediment in economic and social growth of third world nations. All of us (developing and developed nations) are searching for new and newer sources of energy and its efficient use. Moving towards modernization, luxuries become necessities which lead the people towards the need of personal vehicle thus contributing to the substantially increased traffic density. This increased traffic density can be utilized for generation of Electricity by using an innovative Technique. In this project work an attempt has been made to fabricate a ramp, by which we can utilize the energy in power generation. This may further be used in battery charging. The efficiency of our machine is some where 0.4 to 0.5 percent. It is seems a very small number but if we think in terms of number of vehicles and time it will be a huge amount of energy saved. This type of ramp is best suited for the places where the speed breaker is a necessity. The places like Toll bridges and vehicle parking stands are best for its utilization. 1
  • 10. FABRICATION DETAILS FABRICATION DETAILS An iron roller is fixed on a wooden ramp on which vehicle passes. As vehicle passes over it, it starts moving. A linkage is provided which transfer the motion to a stepper motor for electricity generation. All parts are described in detail on their respective places. 2. MAIN PARTS THEIR SPECIFICATIONS 2.1 WOODEN RAMP. 2.2 METAL ROLLER. 2.3 CHAIN AND SPROCKET MECHANISM 2.4 FREEWEEL MECHANISM. 2.5 BELT. AND PULLEY 2.6 DYNAMO 2.7 WIND MILL 2.8 LIGHT EMITTINGDIODE 2.9 BATTERY 2
  • 11. 2.1 WOODEN RAMP The whole apparatus is mounted on wooden board and the specifications of the wooden Boards are Figure 1 - Wooden Ramp Wooden board: 910mm * 1250mm Platform: 500mm * 600mm Thickness of board: 20 mm Platform inclined at 25 degree from ground from both sides. 3
  • 12. 2.2 METAL ROLLER Roller is made of iron pipe with metal strips welded on it to give better surface contact between vehicle tire and roller. Figure 2: Metal Roller SPECIFICATIONS Outside diameter of metal roller 165 mm Inside diameter of metal roller 155 mm Length of roller: 520 mm Diameter of shaft: 34mm Thickness of metal strip: 6mm No. of metal strip: 10 4
  • 13. 2.3 CHAIN AND SPROCKET MECHANISM Chains are made up of number of rigid links which are hinged together by pin Joints in order to provide the necessary flexibility for warping round driving and driven wheels. These wheels have projecting teeth of special profile and fir into the corresponding recesses in the links of chain as shown in figure. The toothed Wheels are known as sprocket wheels or simply sprocket. The chains are mostly used for transmit motion and power from one shaft to another, when the centre distance between their shafts is short such as in bicycle, motorcycle, agriculture machinery, etc In the case of bicycle chains by varying the size (and therefore, the tooth count) of the sprockets on each side of the chain, we can modify the overall gear ratio of the chain drive. By providing different-sized driving sprockets and different-sized driven sprockets. Figure.3: Chain and Sprocket 5
  • 14. 2.4 FREEWHEEL In mechanical or automotive engineering, a freewheel is a device in a transmission that disengages the driveshaft from the driven shaft when the driven shaft rotates Faster than the driveshaft. This condition exists in a bicycle going downhill when the rider holds his feet still, no longer pushing the pedals. Without a freewheel, with a fixed connection between the rear wheel and the pedals, the rear wheel Would drive the pedals round.The simplest freewheel device consists of two saw-toothed, spring-loaded discs pressing against each other with the toothed sides together, somewhat like a Ratchet. Rotating in one direction, the saw teeth of the drive disc lock with the teeth of the driven disc, making it rotate at the same speed. If the drive disc slows down or stops rotating, the teeth of the driven disc slip over the drive Disc teeth and continue rotating. Figure 4: Freewheel Figure 5: Freewheel Unit 6
  • 15. 2.5 PULLEY AND BELT A pulley is a wheel with a groove along its edge, the pulleys are used to transmit power from one shaft to another by means of flat belts or ropes. Since the velocity ratio is inverse ratio of diameter of driving and driven pulleys. The belts are used to transmit power from one shaft to another by means of pulley which rotate at the same speed or different speed. Figure 6 Pulley SPECIFICATIONS Diameter of Driving Pulley = 330 mm Diameter of Driven Pulley = 65 mm Length of Belt = 1425 mm 7
  • 16. 2.6 DYNAMO It is an electrical generator that produces direct current with the use of a commutator.Dynamos were the first electrical generators capable of delivering power for industry and the foundation upon which many other later electric power conversion devices were based ,including the electric motor,the alternating current alternator,and the rotary converter.Today,the simpler alternator dominates large power scale power generation,for efficiency,reliability and cost reasons. Figure 7: Dynamo SPECIFICATIONS NUMBER OF DYNAMOS - 2 VOLTAGE – 12V 8
  • 17. 2.7 WIND MILL A wind mill is a machine that converts the energy of wind into rotational energy by means of vanes called blades or vanes. The reason for the name “WIND MILL” is that the devices originally were developed for milling grains for food production; the name stuck when in the course of history windmill machinery was adapted to supply power for many industrial and agricultural need other than milling. The majority of modern wind mills take the form of wind turbines used to pump water, either for land drainage or to extract groundwater. Figure 8 : windmill 9
  • 18. 2.8 LIGHT EMITTING DIODE A light emitting diode (LED) is a two lead semi conductor light source that resembles a back pn junction diode; expect that an LED also emits light. When an LED’s anode lead has a voltage that is more positive than its cathode lead by at least the LED’s forward voltage drop, current flows. Electrons are able to recombine with holes within the device, releasing energy in the form of photons. This effect is called ELECTROLUMINESCENCE and the colour of light (corresponding to the energy of the photons) is determined by the energy band gap of the semiconductor. Figure 9: LED SPECIFICATIONS Number of LED used - 3 10
  • 19. 2.9 BATTERY Figure 10 : Battery SPECIFICATION Number of battery used: 1 Voltage: 500v 11
  • 20. WORKING PRINCIPLE LAW OF INERTIA  According to Newton’s law of inertia, force is designated as the product of mass and acceleration, where acceleration is measured relative to an inertial reference. Newton’ law F =M*A. LAW OF DYNAMIC FRICTION  The stage when the body acted upon by an external force is just on the point of moving, is called limiting equilibrium of the body. The force of friction which is offered by the rough surface at the stage of limiting equilibrium, is called limiting friction. When a body starts moving, the force of friction offered by the surface is called the dynamic friction .  When a body is at the point of limiting equilibrium the force of friction is maximum. The angle which the resultant of the maximum force of friction and normal reaction make with the normal reaction is called the angle of friction. It is denoted by tan lamda Tan lambda = Maximum force of friction/ Normal reaction.  The ratio of the limiting friction and normal reaction is called coefficient of friction. 12
  • 21. BELT AND CHAIN  Belt and chain are used for the power transmission from one shaft to another shaft.  According to law of belting, the centre line of the belt as it approaches the pulley must lie in a plane perpendicular to the axis of that pulley, or must lay in the plane of the pulley, otherwise the belt will run off the pulley. Power transmitted by the belt = (T1 – T2)*V/75.  If T be the number of teeth on chain, p the pitch, d the pitch circle diameter, then D = p cosec (180/T).  Gears are mainly used for transmission of power and motion; gears are used when positive drives are necessary and when the centre distance is relatively short. FARADAY LAW OF ELECTRICITY  Electric current flows from positive to negative polarity but electrons flow reverse direction. Current flows when electrons find a path to move along. Electricity is measured in ampere.  Coulomb is the basic quantity of electricity. One coulomb equals 6.25 billion electrons. WORKING  As the vehicle passes over the ramp, there‘s is a surface contact between vehicle tires and roller, which will tend to rotate the roller, it is free to rotate as it is supported on bearings which are mounted on T-shape supports which are bolted to wooden base. 13 14
  • 22. TESTING AND RESULTS OBSERVATION TABLE MECHANICAL APPARTUS Serial No. Velocity of vehicle (m/sec) Angular speed of vehicle tire(rad./sec) Angular speed of roller (rad./sec) Rotational kinetic energy (Joules) 1 2.78 .00926 .0336 4541 2 3.32 .01108 .0401 6469 3 4.155 .0138 .0503 10057 Table 1 ELECTRICAL APPARATUS Serial No. Rotational kinetic energy ofroller(J) Voltage (volts) Current (ampere) Time (seconds) Electrical energy(J) Efficiency (percent) 1 4541 5 .8 4 16 .4 2 6469 5.5 1 4 22 .45 3 10057 6.4 1.2 4 31 .48 Table 2 14
  • 23. CALCULATIONS: Here, w1 = Angular Speed of Vehicle Tire (rad/sec) w2 = Angular Speed of Roller (rad/sec) d1 = Diameter of Tire (mm) d2 = Diameter of Roller (mm) v = Velocity of Vehicle (m/sec) I = Moment of Inertia of Roller (pipe) Do = Outside Diameter of Roller (mm) Di = Inside Diameter of Roller (mm) V = Voltage (volts) I = Current (Ampere) T = Time (seconds) R = Rotational Kinetic Energy of Roller (Joules) E = Electrical Energy (Joules) When Velocity ofVehicle is, v=2.78m/sec d1=600mm d2=165mm And v=r*w. So, w1= 2.78 / (d1/ 2) = 2.78 / (.600 / 2) = .00926 rad / sec And, (w1/w2) = (d2/d1) So, w2= (.0926*600) / 165 = .0336 radian / sec 15
  • 24. Moment of Inertia of Roller, I= (3.14*(do4-di4)) / 64 = d0= 165mm = did = 155mm =8046250mm4 Rotational Kinetic Energy of Roller= (I*w2*w2) / 2 = (8046250*.0336*.0336) / 2 = 4541 J Electrical energy= V*I*t. = 5*.8*4 = 16J Efficiency=Electrical Energy / Rotational Kinetic Energy =16 / 4541 =.004 =.4percent When Velocity ofVehicle is, v=3.32m/sec d1=600mm d2=165mm And v = r*w. So, w1 = 3.32 / (d1/2) = 3.32 / (.600/2) = .01108 radian/sec And, (w1/w2) = (d2/d1) So, w2 = (.01108*600)/165 = .0401rad/sec 16
  • 25. Moment of Inertia of Roller, I= (3.14*(do4-di4)) / 64 = d0=165mm = did =155mm =8046250mm4 Rotational Kinetic Energy of Roller= (I*w2*w2)/2 = (8046250*.0401*.0401) / 2 = 6469 J Electrical Energy = V*I*t = 5.5*1*4 = 22 J Efficiency=Electrical Energy / Rotational Kinetic Energy = 22 / 6469 = .0045 = .45percent When Velocity ofVehicle is, v=4.155m/sec d1=600mm d2=165mm And v = r*w. So, w1 = 4.155 / (d1/2) = 4.155 / (.600/2) = .0138 radian/sec And, (w1/w2) = (d2/d1) So, w2 = (.0138*600)/165 = .0503 radian/sec 17
  • 26. Moment of Inertia of Roller, I = (3.14*(do4-di4))/64 = do =165 mm = di =155 mm = 8046250 mm4 Rotational Kinetic Energy of Roller = (I*w2*w2)/2 = (8046250*.0503*.0503)/2 = 10057J Electrical Energy = V*I*t. = 6.8*1.2*4 = 34 J Efficiency= Electrical Energy / Rotational Kinetic Energy = 34 / 10057 = .0048 = .48percent 18
  • 27. GRAPH 19 0 5 10 15 20 25 30 35 0 2 4 6 Electricalenergy(J) Velocity(m/sec) Velocity vs Energy Electrical Energy Linear (Electrical Energy)
  • 28. CONCLUSION We concluded that, electricity is generated by our project. By implementing we Observed that on moving a vehicle over the roller speeds varying from 10-15 km/hr, And in this region 5-7 volts is being produced. Speed Vs energy plot shows that energy produced is directly proportional to speed but there will be a limit of Mechanical Instruments. The efficiency of air set ups is about 0.4 to 0.5%, which seems a very small value but if we see it in terms of numbers of vehicles passed per unit time, there will be huge amount of energy saved. 20
  • 29. AREA OF UTILITY & FUTURE SCOPE Electric ramp can be utilized on Express Toll Stoppages for en-lightning the path lights and also for the ticketing at the pickets. It can be used in rural areas contributing towards high paced development of villages. As we know most of the villages having electricity problem. So it can play a major role in en-lightning the streets of villages as well fulfills the basic need of electricity in villages. A part from that, energy generated from this should meet the environmental standards and cost- effective. And finally would like to sum up with the fact that scarcity of electricity in India is major obstruction towards the development of our country and hitting on the pockets of common man with increase in the consumption and the prices. So, conservation could be one way to do that however the other and better way would be to install these electricity generating ramps where ever possible thus helping our society with catastrophic problem of electricity, rather government should take an initiative and all the cooperative societies to help and ward off this problem and making it a success **THE ELECTRICITY GENERATOR RAMPS**. If we use concert structure in fabrication of speed breaker on the roads, It will become more beneficial. The structure of concert works efficiently and reliably. We can also use more rollers instead of one; also leap up the size of the roller to generate more electricity. 21
  • 30. REFERENCES 1. R.S. Khurmi and J.K.Gupta, Kinematics of Machine, Eurasia Publishing House 2. Strength of Material by: Dr. Sadhu Singh, Danpat Publications Delhi 3. R.S. Khurmi and J.K. Gupta, Machine Design, Eurasia Publishing House Ltd 4. Theraja B.L., Electrical Teachnology vol.II, New Delhi, S. Chand & Co., 2005 5. The World Book Encylopedia vol. II, USA, World Book Inc., 1992 6. PSGDesign Data,Coimbatore, PSG College of Tech.,2000. WEB SITES 7. http://en.wikipedia.org/wiki/Chain_drive 8. http://en.wikipedia.org/wiki/sproket. 9. http://en.wikipedia.org/wiki/Image:Freewheel.jpg 10. http://en.wikipedia.org/wiki/freewheel 22
  • 31. BIBLIOGRAPHY 1. ADVANCED ENGINEERING 2. NEW SCIENCE EXPERIMENTS 3. ENERGY CONSERVATION TECHNIQUES. 23