Prepared by
Modi Dhruv S.
Prajapati Raj K.
Patel Kautil .M
Patel Raj A.
Patel Jay A.
Patel Vishvas A.
(116500319026)
(116500319046)
(116500319032)
(116500319028)
(116500319045)
(116500319036)
Guide by : Mr. K.S.Patel
Index
No
Sr. no
Chapter
Page no
Introduction
4 to 5
1.1
Introduction
4
1.2
Idea
5
2
Abstract
6
3
Working of stirling Engine
7 to 10
3.1
Working
7
3.2
Types of stirling engine
8
3.3
Alpha stirling engine
9
3.4
Beta stirling engine
10
Diagram
11 to 12
4.1
Block diagram
11
4.2
The stirling cycle
12
5
Advantage
13
6
Conclusion
14
1
4
Introduction
• First developed in 1816 by Reverend
Dr. Robert stirling
• After development, had little use
until the mid 1900’s, when it became
more common
• Used today in many applications,
primarily green energy, since the
heat source can be anything
(geothermal, solar, etc.)
• stirling engine has a sealed cylinder with one
part hot and the other cold
• In cylinder there should be air, helium or
hydrogen.
• There will be one displacer which can be
used for crankshaft motion.
• When gas hits up it expand and pressure on
displacer
• It can also useful because we can give
motion to any element by crank shaft.
• Mostly in solar power generation can be used
where heat source is sun light.
IDEA
•
•
There are two power generator for electricity.
one is Diesel and another one is silent generator,
but both are not cost effective
• At presence increasing diesel price day by day make it
costlier.
• Thus we think machine that can generate electricity or
also can be used for another motion
• And Also In our Workshop, There is no this type
Machine. So, we think to make this type machine.
ABSTRACT
In rural area electricity problem
But its cost effective to supply electricity
Thus in project we make simple stirling engine
By that we can generate electricity
Here we demonstrate it for simple battery
charger.
stirling engine when heated ,there will
mechanical motion in engine
From that by rotating motor we generate 12v for
battery charging or another application.
WORKING
There is two end one hot and other cold
When one end of stirling engine heated ,air will expand
and pressure displacer to move upward side
By connecting this displacer to crack shaft we get
mechanical motion
And connecting motor after crank shaft we get 12v for
battery charging
After displacer reach top position, air cooled and piston
move downward
Again piston heated and move upward.
By this back and forth movement we get continuous
supply
Type of stirling engine
• Main application of the stirling cycle
• Uses pistons and cylinders to rotate a
crankshaft
• Two types/configurations – Alpha and
Beta
• Alpha Stirling engines use two cylinders
and two pistons
• Beta Stirling engines use one cylinder,
one piston and a “displacer”
Alpha Stirling Engine
http://en.wikipedia.org/wiki/Stirling_engine#The_Stirling_cycle
Beta Stirling Engine
http://en.wikipedia.org/wiki/Stirling_engine#The_Stirling_cycle
BLOCK DIAGRAM
stirling
engine
Burner
Crank shaft
Motor
Battery
The Stirling Cycle
• Process 1-2: Isothermal
expansion
• 2-3: Constant-volume
cooling
• 3-4: Isothermal
compression
• 4-1: Constant-volume
heating
http://en.wikipedia.org/wiki/Stirling_engine#The_Stirling_cycle
Advantage
•
•
•
•
•
Simple design
Low cost
Portable
Good Performance
Good efficiency
http://en.wikipedia.org/wiki/Stirling_engine#The_Stirling_cycle
Conclusion
• Low torque
• In order to be more efficient, it
requires metals with very high
thermal conductivity, which can be
expensive
• Rotation is not always smooth – the
fluid sometimes heats up faster than
it cools off
http://en.wikipedia.org/wiki/Stirling_engine#The_Stirling_cycle