Prepared by

Modi Dhruv S. (116500319026)

Prajapati Raj K. (116500319046)

Patel Kautil .M (116500319032)

Patel Raj A. (116500319028)

Patel Jay A. (116500319045)

Patel Vishvas A. (116500319036)

Guide by : Mr. K.S.Patel

Index No Sr. no Chapter Page no

1 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

4 Diagram 11 to 12

4.1 Block diagram 11

4.2 The stirling cycle 12

5 Advantage 13

6 Conclusion 14

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

Crank shaftCrank shaft MotorMotor BatteryBatterystirling enginestirling engine

BurnerBurner

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