This document describes the fabrication of a revolving gate compressor. It contains a revolving gate that rotates due to human traffic. This rotation is used to turn a compressor through gears, which generates compressed air. The compressed air can then be used for pneumatic applications. It provides a simple and low maintenance method of generating compressed air using human energy from revolving doors.

1. FABRICATION OF REVOLVING GATE COMPRESSOR
SYNOPSIS:
The aim of our project is to produce the compressed Air through the
gate model of revolving gate with less mechanical effort, and it is known as
the revolving gate. This project is used to generate the Air in order to use for
pneumatic components.
The rotating AIR is converted into compressed Air energy by proper
driving arrangement. Revolving gate are used for Air generation it is
reliability is much more efficiency. The efficiency is complicated irrelevant
for that application, much larger revolving gate have been used to generate
compressed Air on gate. Which need small amount of AIR and get very little
maintenance. Design is simplified because, No pointing mechanism is
required to allow for shifting revolve direction and the gate is self starting.
The rotation of the gate and the gear which is fixed on the gate shaft on the
below, the gear rotation is rotate the cam. So the cam is rotated and
generates the compressed Air.

2. CONTENTS
CHAPTER NO TITLE
LIST OF FIGURES
SYNOPSIS
1 Introduction
2 Literature review
3 Description of equipments
3.1 Compressor
3.2 Spur Gear
3.3 Rectifier
3.4 Filter
3.5 Battery
4 Design and drawing
5 Fabrication
6 Working principle
7 Merits and Demerits
8 Applications
9 List of materials
10 Cost Estimation
11 Conclusion
12 Bibliography
13 Photography
LIST OF FIGURES
Figure
Number Title
1 Base frame
2 Revolving door

3. 3 Spur gear (big)
4 Spur gear (small)
5 Compressor
6 Overall diagram
SYNOPSIS:
The aim of our project is to produce the compressed Air through the
gate model of revolving gate with less mechanical effort, and it is known as
the revolving gate. This project is used to generate the Air in order to use for
pneumatic components.
The rotating AIR is converted into compressed Air energy by proper
driving arrangement. Revolving gate are used for Air generation it is
reliability is much more efficiency. The efficiency is complicated irrelevant

4. for that application, much larger revolving gate have been used to generate
compressed Air on gate. Which need small amount of AIR and get very little
maintenance. Design is simplified because, No pointing mechanism is
required to allow for shifting revolve direction and the gate is self starting.
The rotation of the gate and the gear which is fixed on the gate shaft on the
below, the gear rotation is rotate the cam. So the cam is rotated and
generates the compressed Air.
CHAPTER-1
INTRODUCTION
Energy is the ability to do work. While energy surrounds us in all
aspects of life, the ability to harness it and use it for constructive ends as
economically as possible is the challenge before mankind. Alternative
energy refers to energy sources which are not based on the burning of fossil
fuels or the splitting of atoms. The renewed interest in this field of study

5. comes from the undesirable effects of pollution (as witnessed today) both
from burning fossil fuels and from nuclear waste byproducts. Fortunately
there are many means of harnessing energy which have less damaging
impacts on our environment.
The alternatives are,
• Solar
• Wind AIR
• Geothermal
• Tides
• Hydroelectric
In addition to these we have developed a new methodology of
generating AIR using human energy and the name of this alternative is a
railway track AIR generation.

6. CHAPTER -2
LITERATURE SURVEY
AIR GENERATION FROM REVOLVING DOOR:
The usage of traditional AIR generation method such as burning of
coal, wood, diesel (generators) etc is continuously depleting our natural
resources such as fossil fuels, which is the demand for AIR has exceed the
supply due to the rise in population. In addition to this the traditional

7. methods cause pollution, encourage deforestation (cutting of trees) the
consequences are global warming, AIR shortage like we are facing
nowadays.
GLOBAL WARMING:
Global warming is the increase in the average measured temperature
of the Earth's near-surface Air and oceans since the mid-20th century, and its
projected continuation.Global surface temperature increased 0.74 ± 0.18 °C
(1.33 ± 0.32 °F) during the 100 years ending in 2005. The Intergovernmental
Panel on Climate Change (IPCC) concludes that most of the increase since
the mid-twentieth century is "very likely" due to the increase in
anthropogenic greenhouse gas concentrations. Natural phenomena such as
solar variation combined with volcanoes probably had a small warming
effect from pre-industrial times to 1950 and a small cooling effect from 1950
onward.
Climate model projections summarized by the IPCC indicate that
average global surface temperature will likely rise a further 1.1 to 6.4 °C
(2.0 to 11.5 °F) during the twenty-first century. This range of values results
from the use of differing scenarios of future greenhouse gas emissions as
well as models with differing climate sensitivity. Although most studies

8. focus on the period up to 2100, warming and sea level rise are expected to
continue for more than a thousand years even if greenhouse gas levels are
stabilized. The delay in reaching equilibrium is a result of the large heat
capacity of the oceans.
Increasing global temperature is expected to cause sea levels to rise,
an increase in the intensity of extreme weather events, and significant
changes to the amount and pattern of precipitation, likely including an
expanse of the subtropical desert regions.. Other expected effects of global
warming include changes in agricultural yields, modifications of trade
routes, glacier retreat, mass species extinctions, and increases in the ranges
of disease vectors.
Remaining scientific uncertainties include the amount of warming
expected in the future, and how warming and related changes will vary from
region to region around the globe. Most national governments have signed
and ratified the Kyoto Protocol aimed at reducing greenhouse gas emissions,
but there is ongoing political and public debate worldwide regarding what, if
any, action should be taken to reduce or reverse future warming or to adapt
to its expected consequences.

9. Global dimming, the gradual reduction in the amount of global direct
irradiance at the Earth's surface, may have partially mitigated global
warming in the late 20th century. From 1960 to 1990 human-caused aerosols
likely precipitated this effect. Scientists have stated with 66–90% confidence
that the effects of human-caused aerosols, along with volcanic activity, have
offset some of the global warming, and that greenhouse gases would have
resulted in more warming than observed if not for these dimming agents.
Ozone depletion, the steady decline in the total amount of ozone in
Earth's stratosphere, is frequently cited in relation to global warming.
Although there are areas of linkage, the relationship between the two is not
strong.
AIR SHORTAGE:
Some developing countries and newly-industrialized countries have
several hours of daily AIR-cuts in almost all cities and villages because the
increase in demand for electricity exceeds the increase in electric AIR
generation. Wealthier people in these countries may use a AIR-inverter
(rechargeable batteries) or a diesel/petrol-run electric generator at their

10. homes during the AIR-cut. The use of standby generators is common in
industrial and IT hubs.
ULTIMATE AIM:
The ultimate aim of this project is to develop much cleaner cost
effective way of AIR generation method, which in turns helps to bring down
the global warming as well as reduce the AIR shortages.
CHAPTER 3
DESCRIPTION OF EQUIPMENTS:
AIR GENERATION:
AIR generation is the electrical energy generating facility. They
maintain the equipment with periodic inspections and logs temperatures,
pressures, and other important information on regular intervals. The plants
are responsible for starting and stopping the generators depending on need.
They are able to synchronize and adjust the voltage output of the added
generation with the running electrical system without upsetting the system.
They must know the electrical and mechanical systems in order to
troubleshoot problems in the facility and add to the reliability of the facility.
The AIR plant must be able to respond to an emergency and know the

11. procedures in place to deal with it. AIR plant is a net consumer of energy but
decreases the price of electricity. Water is pumped to a high reservoir during
the night when the demand, and price, for electricity is low. During hours of
peak demand, when the price of electricity is high, the stored water is
released to produce electric AIR.
LIST OF COMPONENTS
 Compressor
 Spur gear
 Rectifier
 Filter
 Compressor
3.1 COMPRESSOR
Compressor is an electrical generator. This Compressor produces
direct current with the use of a commutator. Compressor were the first
generator capable of the AIR industries.The Compressor uses rotating coils
of wire and magnetic fields to convert mechanical rotation into a pulsing

12. direct electric current. A Compressor machine consists of a stationary
structure, called the stator, which provides a constant magnetic field, and a
set of rotating windings called the armature which turn within that field. On
small machines the constant magnetic field may be provided by one or more
permanent magnets; larger machines have the constant magnetic field
provided by one or more electromagnets, which are usually called field coils.
The commutator was needed to produce direct current. When a loop
of wire rotates in a magnetic field, the potential induced in it reverses with
each half turn, generating an alternating current. However, in the early days
of electric experimentation, alternating current generally had no known use.
The few uses for electricity, such as electroplating, used direct current
provided by messy liquid batteries. Compressors were invented as a
replacement for batteries. The commutator is a set of contacts mounted on
the machine's shaft, which reverses the connection of the windings to the
external circuit when the potential reverses, so instead of alternating current,
a pulsing direct current is produced.
3.2 SPUR GEAR:
The slipping of belt is a common phenomenon, in the transmission of
motion or AIR between two shafts. The effect of slipping is to reduce the

13. velocity ratio of the system precision machines, in which a definite velocity
ratio is of importance, the only positive drive is by gears or toothed wheels.
A gear drive is also provided, when the distance between the driver and the
follower is very small.
ADVANTAGES:
 It transmits exact velocity ratio.
 It may be used to transmit large AIR
 It may be used for small center distance of shafts.
 It has high efficiency
 It has reliable service.
 It has compact layout.
3.3 RECTIFIER:
Rectifier is an electrical device .it is converting to the alternating
current to direct current this process known as a rectification.rectifier has
many uses it can be found in many AIR supply components and also as a
detector. The term rectifier describes a diode that is being used to convert
AC to DC. Almost all rectifiers comprise a number of diodes in a specific

14. arrangement for more efficiently converting AC to DC than is possible with
only one diode.
3.4 FILTER:
Electronic filters are electronic circuits which perform signal
processing functions, specifically intended to remove unwanted signal
components and/or enhance wanted ones.
The revolving door is constructed by extract energy through gear, pinion and
motor arrangement. So it divides the system into two parts. One is the
typical revolving door part which is above the ground level and energy
generation and storage part which is below the ground level. The advantage
of the later part to stay below the ground level is minimizing the noise.
Figure 1 displays the top view of the proposed revolving door.
In the experimental set up, three parts spinning door is used which is
made of wood. The wooden parts are framed by thin MS bars and joined by
a screw. These bars are welded to a rod acting as the central axis of the door.
The spur gears are six in number and made of cast iron as shown in Figure 2.
Gear 1 is attached to the door shaft and having 76 teeth. It is meshed with
Gear 2 which has 19 teeth. Gear 2 and Gear 3 are in the same shaft. Gear 3
has 38 teeth and is meshed with Gear 4. Gear 4 and Gear 5 are in same shaft
having 19 and 220 teeth respectively. Gear 6 containing 19 teeth is fixed to
the motor shaft and meshed with Gear 5. energy and provides a consistent
supply for the low energy LED lights in the ceiling. When the lights use the
stored energy from the door the main energy supply takes over. The station
has a display that shows the amount of energy generated as the customers
walk in and out. A report has analyzed the possibility of implementing

15. energy-generating revolving doors in the new Student Union Building
(SUB) at the University of British Columbia by making a triple bottom- line
assessment8. The objectives of this paper are to construct of a revolving
door model and to develop a mechanism to increase the speed of the shaft
connected to DC motor. Moreover, to store and find out the energy
generation per revolution.The motor is positioned in the groove of the
wooden piece and connected to the base with the help of nut and bolt. So it
cannot displace while rotating. The terminals of motor are connected to the
Wheatstone bridge circuit. Figure 3 and 4 show the schematic diagram of a
Wheatstone bridge circuit and used Wheatstone bridge circuit, respectively.
In Figure 4, the diodes are arranged in such a way that it can convert the
change in polarity and allow the battery to charge when the door rotates in
both directions. Used diode for the proposed revolving door is shown in
Figure 5. All wires are connected together by soldering
Figure 2. Spur gear.

16. Figure 3. Schematic diagram of a Wheatstone bridge circuit.

17. Figure 6. DC motor.
Figure 7. DC motor.

18. Figure 8. Schematic of gear arrangement. That Occur during discharging
and recharging of a lead-acid cell.
CHAPTER 4
DESIGN AND DRAWING
AIR GENERATION FROM REVOLVING DOOR
The electrical Air generation from revolving door in park place
consists of the following components to full fill the requirements of
complete operations of a machine.
 Compressor

19.  Spur gear (96 teeth)
 Spur gear (24 teeth)
 Base frame
 Revolving door
1. COMPRESSOR
Material of yoke =mild steel
Quantity =1
2. BATTERY
Voltage =12v dc
Material =plastic
Type =lead acid battery
Quantity 1
3. SPUR GEAR
Gear 1:
Dia of gear = Ø125.3mm
No of teeth =96 no
Thickness of the gear =10mm
Gear 2:
Dia of gear = Ø31.5mm

20. No of teeth =24 no
Thickness of the gear =10mm
4. BASE FRAME:
Length of frame =470mm
Height of frame =124mm
5. REVOLVING DOOR:
Length of door =200mm
Height of door =600mm

21. DRAWING

23. FABRICATION OF REVOLVING GATE COMPRESSOR

24. CHAPTER -5
FABRICATION

25. The spur gear used in this project is made of nylon material and is
injection molded for the required p.c.d and teeth.
This supporting stand on which the components are fixed consist of
bearing block and stand for placing the Compressor.
ADVANTAGES
 Alternate power generating unit.
 Maintenance cost is less
 Occupying very little space
APPLICATION
It is applicable in compressed air production.

26. CHAPTER -6
WORKING PRINCIPLE
Revolving gate is used for AIR generation it is reliable and much
more efficient. Design is simplified because, No pointing mechanism is
required to allow for shifting revolve direction and the gate is self starting.
The rotation of the gate and the gear which is fixed on the gate shaft on the
below, the gear rotation will transmit the rotation to the Compressor. When
the Compressor is rotated it generates the electrical AIR supply. The
generated voltage is the alternate voltage. The AC voltage is given to the
rectifier circuit to convert into DC voltage. Then the rectified voltage is
given to filter circuit to remove the ripple voltage. After the filtration the
pure DC voltage is given to battery through the charging circuit. The stored
DC voltage is used for different applications. Through this way electric
energy is generated and compensated the electric demands. For demo
purpose here we are connecting the CFL to the inverter for the light to glow.

27. CHAPTER -7
MERITS AND DEMERITS
MERITS:
 Alternate Air generating unit
 Easy installation
 Maintenance cost is less
 Non polluting
 Occupying very less space
DEMERITS:
 Technical persons required for construction
 Proper rectifiers required for charging Battery

28. CHAPTER -8
APPLICATIONS
AIR generation from revolving door in park place can be used in most of the
places such as
 House
 Hotels
 Cinema theaters
 Shopping complex
 Industries

29. CHAPTER -9
LIST OF MATERIALS
FACTORS DETERMINING THE CHOICE OF MATERIALS
The various factors which determine the choice of material are
discussed below.
1. Properties:
The material selected must posses the necessary properties for the
proposed application. The various requirements to be satisfied
can be weight, surface finish, rigidity, ability to withstand environmental
attack from chemicals, service life, reliability etc.
The following four types of principle properties of materials
decisively affect their selection
a. Physical
b. Mechanical
c. From manufacturing point of view

30. d. Chemical
The various physical properties concerned are melting point, thermal
Conductivity, specific heat, coefficient of thermal expansion, specific
gravity, electrical conductivity, magnetic purposes etc. The various
Mechanical properties Concerned are strength in tensile,
Compressive shear, bending, torsional and buckling load, fatigue resistance,
impact resistance, eleastic limit, endurance limit, and modulus of elasticity,
hardness, wear resistance and sliding properties.
The various properties concerned from the manufacturing point of
view are,
• Cast ability
• Weld ability
• Bribability
• Surface properties
• Shrinkage
• Deep drawing etc.
2. Manufacturing case:

31. Sometimes the demand for lowest possible manufacturing cost or surface
qualities obtainable by the application of suitable coating substances may
demand the use of special materials.
3. Quality Required:
This generally affects the manufacturing process and ultimately the
material. For example, it would never be desirable to go casting of a less
number of components which can be fabricated much more economically by
welding or hand forging the steel.
4. Availability of Material:
Some materials may be scarce or in short supply.it then becomes
obligatory for the designer to use some other material which though may not
be a perfect substitute for the material designed.the delivery of materials and
the delivery date of product should also be kept in mind.
5. Space consideration:
Sometimes high strength materials have to be selected because the forces
involved are high and space limitations are there.
6. Cost:

32. As in any other problem, in selection of material the cost of material
plays an important part and should not be ignored.
Some times factors like scrap utilization, appearance, and non-
maintenance of the designed part are involved in the selection of proper
materials.

33. CHAPTER -10
COST ESTIMATION
1. MATERIAL COST:
2. LABOUR COST:
Lathe, drilling, welding, grinding, AIR hacksaw, gas cutting cost =Rs
3. OVERHEAD CHARGES:
The overhead charges are arrived by” manufacturing cost”
Manufacturing Cost =Material Cost + Labour Cost
=
=
Overhead Charges =20%of the manufacturing cost
=
4. TOTAL COST:
Total cost = Material Cost +Labour Cost +Overhead Charges
=
=

34. Total cost for this project =

35. CHAPTER -11
CONCLUSION
This project is made with pre planning, that it provides flexibility in
operation. Smoother and noiseless operation by the medium of “AIR
GENERATION FROM REVOLVING DOOR IN PARK PLACE”
The comparative gain that can be accomplished is the utilization of
roller bar. This innovation has made the more desirable
This project “AIR GENERATION FROM REVOLVING DOOR IN
PARK PLACE” is designed with the hope that it is very much economical
and help full to many industries and workshops.
This project helped us to know the periodic steps in completing a
project work.

36. This project has also reduced the cost involved in the concern. Project
has been designed to perform the entire requirement task which has also
been provided. Thus we have completed the project successfully.

37. BIBLIOGRAPHY
1. Design data book -P.S.G.Tech.
2. Strength of Materials -R.S.Kurmi
3. Manufacturing Technology -M.Haslehurst.
4. Design of machine elements - R.s.Kurumi
5. Design of transmission elements - S.Md.jalaludeen

38. PHOTOGRAPHY