1. 1

2. Author
Md. Rokonuzzaman
Md. Shamimul Islam
S. M. Raianur Rahman
Md. Arifuzzaman
Presented By:
Md. Rokonuzzaman
2
Design of a Energy Generating Systems
Using Speed Breaker

3. Overview
3
 It’s a new technique to produce energy from the
wasted kinetic energy of vehicles due to passing
over speed breaker.
 This paper intends to augment the present energy
crisis to some extend and showing its possibility
by designing a prototype system based on
experimental data.

4. Renewable Energy
4
The International Energy Agency (IEA) defines renewable energy
resources as those :
 “Derived from natural processes” and
 “Replenished at a faster rate than they are
consumed”
The International Renewable Energy Agency (IRENA) defines:
“Renewable energy includes all forms of energy
produced from renewable sources in a sustainable
manner, which includes the following :
 Bio Energy  Geothermal Energy
 Hydro Energy  Solar Energy
Wind Energy  Ocean Energy

5. Share of Worldwide Primary Energy Sources (IEA, 2010)
5

6. Objective
6
To meet the future electricity demand
A small step to try to improve current
energy crisis situation
To introduce a new technology
To Emphasis more on:
 Green Energy
 Make use of unconventional source
of energy

7. Introduction
7
A significant amount of electricity can be
generated where vast energies are wasting.
During passing over a speed-breaker, most
of the kinetic energy is wasted by a
vehicle.
This wastage kinetic energy of vehicles can
be converted into electrical energy.

8. Uses of the Generated Electricity
8
 Electric vehicles
 Street light
 Charging Devices
 Traffic signal and even can be feed
to grid

9. At a Glance ….
9
Bangladesh Power Sector
Electricity Growth 7.20% (in Fiscal year 2014)
Generation Capacity 10817 MW (Oct,14)
Total Consumer 12.5 million
Transmission Lines 8600 km
Distribution lines 278000 km
Per capita Generation 252 kWh (including captive)
Access to Electricity 50%

10. Generation Capacity (By plant type)
10

11. Demand Supply Situation
11
 Generation : 5500-6300 MW
 Capacity : 10817 MW
 Peak Demand : 12000 MW
 Shortage of gas causes 400-600 MW less power
generation
 Load Shedding Up to 800 MW during hot summer
days
 Shortage and Unreliable Power supply has
constrained economic growth

12. Primary Fuel Supply Scenario
12
 Gas : No significant gas discovery in recent
years
 Coal : Indigenous or imported, coal hoisting
results in detrimental effects on
environment
 Oil :Volatile market, high price, for peaking
duty
 LNG : Necessary to ensure and reliable gas
supply
 Nuclear : Safe technology, No Pollution,
Expected to be future Base load option

13. Demand with Electricity Generation
13

14. Renewable Energy in Bangladesh
(National capacity of renewable energy is approx. 403 MW)
14
Serial No. Category Achievement
01 Solar Home System
(SHS)
150 MW
02 Solar Irrigation 1 MW
03 Roof top solar PV at
Government, power
sector office buildings
and at newly
constructed buildings
14 MW
04 Wind Energy 2 MW
05 Biomass based
electricity
<1 MW
06 Biogas based electricity 5 MW
07 Hydro power 230 MW
Total 403 MW

15. Distribution of the Solar Home System in
Six Divisions in Bangladesh Up to Feb 2012
15

16. 16
Organization
Name
Type of
application
Installed
Capacity (Watt)
Location
Grameen Shakti
3 hybrid 4500 Grameen offices in
the coastal region
Hybrid 7500 Cyclone shelter in
the coastal region
BRAC
(Bangladesh RuralAdvancement
Committee)
Stand alone 900 Coastal region
Hybrid 4320
Bangladesh Army StandAlone 400 Chittagong Hill
tracts
IFDR
(International Fertilizer
Development Center)
Stand alone 1100 Teknaf
Stand alone 600 Meghnaghat
LGED Wind PV hybrid 400 Kuakata
Total 19720Watt
InstalledWind Energy

17. Installed Biomass Sources
17
72.8
26.83
41.26
83.04
11.41
37.01
44.72
39.6
0
10
20
30
40
50
60
70
80
90
Cow dung Jute stick Rice
straw
Rice husk Baggase Fire wood Twig and
Leaves
Other
waste
SuppliedEnergy

18. Hydro Electric Power
18
Karnafuli Hydro station
 230 MW of hydro power is utilized
 Geographic and Socio economic condition may not allow
much larger expansion of hydro electricity
 Studies do not show a big potential
Sangu Hydro Station (Under construction)
 installed capacity of 140 MW
 Approximate average annual energy of about 300 GWh per
year.
Matamuhuri Project (Under construction):
 Installed capacity 75 MW
 approximate average annual energy 200 GWh per year.

19. This is a New Technique …
19
To overcome the energy crisis that I have
presented right now a new technique of
generating renewable energy source, which
I describe in my paper.
I am sure that it will reduce the raising crisis
to some extent
By implementing this new idea we can
generate approximately 28.2 kW power per
hour

20. 20
I. Crank-shaft mechanism
II. Roller mechanism
III. Rack- Pinion mechanism
Why Rack - Pinion mechanism?
 Rack-Pinion assembly gives good mounting
convenience
Possible Three Different Mechanisms

21. 21

22. Rack-Pinion Mechanism (Cont.)
Equipments are Used …
22
 Rack
 Pinion
 Sprocket
 Spring
 Electric Dynamo/Generator
 Metal Frame
 Load

23. Specifications of this Prototype ..
23
A prototype has been made for taking
approximate calculations.Which is …
 Made on Metal iron
 Stand on a frame
 Pinion and rack is made by Cast iron
 Steel Spring

24. Prototype Design
Upward and Downward Directions
24

25. Proposed Infrastructure
25

26. Experimental Data Table
26
Weight (kg) Current (mA) Power (W)
1.0 1.0 0.01962
2.0 2.2 0.03924
3.0 3.3 0.05886
4.0 3.9 0.07848
5.0 5.2 0.0981

27. 27
Experimental Graph

28. Calculation
28
Let us consider,
The mass of a vehicle moving over the speed breaker
= 1000Kg (Approximately)
Height of speed breaker from road level
= 12 cm
Work done = Force x Distance
Here,
Force =Weight of theVehicle
=1000 Kg x 9.81
=9810 N
Vehicle traveled distance = Height of the speed breaker
= 12 cm

29. Calculation(Contd.)
29
We Know,
Output power =Work done/Sec
= (9810 x 0.12) / 60
= 1177.2/60Watt (For one pushing force)
= 19.62Watt
Power developed for 1 vehicle passing over the speed breaker in
one minute = 19.62 watt
Power developed for 60 minutes (1 Hour)
= 19.62 x 60Watt
= 1177.2Watt
Power developed for 24 hours
= 1177.2 x 24Watt
= 282528.8Watt
= 28.25 KiloWatt

30. Comparison (in mechanisms)
30
Rack pinion Iron Roller Crank-shafts
Maintenance is
comparatively easier
Maintenance will be
very difficult
required to be mounted
on bearings which
creates balancing
problem
Collision possibility is
less
Might cause collision. Any occurrence of
variable load leads to
balancing problem.
Losses is less Losses is high Losses is high

31. Comparison (in system)
31
Conventional system Proposed system
This generation based on power
plant whose set up cost is high
Our system set up cost is low
Maintenance cost is high Maintenance cost is low
Has carbon emission in large scale Carbon emission free
Sometimes this generation is
harmful for environment
Our system is friendly for
environment
Need to Routine Checkup No need routine checkup
Limitation is considerable Limitation is high

32. Advantages
32
 No need of natural resources.
 No environment pollution.
 Easy construction.
 Easy to install.
 Less maintenance cost.
 Discrete but nonstop generation of
electricity.
 No manual work necessary during
generation.

33. Advantage…(Cont.)
33
 No obstruction to traffic
 Easy maintenance
 Less floor area
 Good mountings convenience from rack-
pinion assembly

34. Drawbacks
34
 Pulsating dc voltage which is difficult to convert
into Continuous ac voltage.
 Can get rusted in rainy season.
 Can not effective with light weight of vehicles.
 Automatic controllable but risky.
 Efficiency is low but more than turbine
generator.
 Generator Design and selection is not
experimented.
 Spring design and longevity is not mentioned.

35. Drawbacks … (Contd.)
35
 Difficult to Generate in Large Quantity
 Large Capital Cost
 Renewable energy relies heavily upon the
weather for sources of supply: rain, wind, and
sunshine.

36. Conclusions
36
This kind of small power humps can be easily
implemented in need based traffic dense area
to reduce the power crisis of a developing
country like Bangladesh to some extent.

37. Future Work
37
Rack and pinion Design for larger
implementation
Practically implementation for larger scale
electricity generation and
 Include the generated energy to the national
grid
 Generator design
 Spring design

38. 38
Thank
you