Ross-Yoke Alpha Stirling Engine

8/10/2019 Ross-Yoke Alpha Stirling Engine

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Ross-Yoke AlphaStirling Engine

ALPHA TEAM


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GROUP1

DeasPratama

EdiIrawan

liaKristianto

Muhammad Nur SiddiqZulendra

WilchaAnatasya Veronica Hutagalung


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Abstract

This project involves on engineering understanding and rewhich focuses on alpha stirling engine with Ross Yoke mecThe purposes are to implement knowledgeand understan

designing the engineand to show how it works.

The implementation includes the future skills and techniqneeded to plan and produce standardized engine, also an and efficient one. We collected data from any websites anthen discusses it in order to give deeper understanding onaspects.

The main phases of this research are data collection, repostructuring, and report finishing. However, this report is thsubmitted report that will be revised to be the final one. Treport will include final paper and prototype.


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Introduction

What is Stirling Engine?

A Stirling engine is a heat engine thaton the basis of an external applied

temperature difference. By maintaining a hot and cold tempe

difference the engine is able to run an

produce mechanical power.


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Introduction

Basic Priciple of Stirling Engine :

1. The engine is filled (under pressure), with a gas helium, or hydrogen.

2. Inside the engine the gas is heated.

3. This increases its pressure and moves pistons as a re

4. The gas is then cooled, lowering its pressure.

5. It is then heated again, and the cycle repeats.

6. The working gas is shuttled back and forth very quthe engine, between the hot and cold ends, cgaining and losing heat and producing power as a re


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Introduction

Type of Stirling Engine :

1. Alpha Engine

HEATERCOOLER

COMPRESSION

SPACE

EXPANSI

SPACE

There are two cylinders. The expansion cylinder is maintanedtemperature while the compression cylinder is cooled. The patwo cylinders contain the regenerator.


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Introduction

2. Beta Engine

HEATERCOOLER

REGENERATOR

COMPRESSION

SPACE

POWER

PISTONDISPLACER

EXPANSION

SPACE

There is one cylinder, hot at one end cold at the other. A loosdisplacer shunts the air between the hot and cold ends of thepower piston at the end of the cylinder drives the flywheel.


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Introduction

2. Gamma Engine

HEATERCOOLER

REGENERATOR

COMPRESSION

SPACE

DISPLACER

POWER

PISTON

EXPANSIO

SPACE

Having a displacer and power piston, similar to Betamachines, however in different cylinders.


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Basic Theory

ALPHA STIRLING CONFIGURATION

HEATERCOOLER

COMPRESSION

SPAC E - Vc

EXPA

SPA

Ac

Ae

Xc

Xe

Where:

Ae= the area of the expansion space piston (this is the cross-seface)

Ac= the area of the compression space piston (this is the crossthe face)Xe= the stroke length of the expansion space pistonXc= the stroke length of the compression space pistonVe= the volume in the expansion spaceVc= the volume in the compression space


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Basic Theory

B. ALPHA STIRLING CONFIGURATIO

Grey region represents dead/ unswept volume incompression and expansion spaces.

Purple region represents swept.

In the expansion space the volume is :

= +

. +

In the compressions space the equation is :

= +

.


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Basic Theory

B. ALPHA STIRLING CONFIGURATIO

Where =

And =

Ae= the area of the expansion space piston

Ac= the area of the compression space piston

Xe= the stroke length of the expansion space piston

Xc= the stroke length of the compression space piston

Vswept,e= the swept volume in the expansion space

Vswept,c= the swept volume in the compression space

Vmin,e= the minimum volume in the expansion space.

Vmin,c= the minimum volume in the compression space.= the crank angle of rotation (this changes with time)

= the phase angle (a constant) between the expansion and

compression space volume.


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Basic Theory

Ross Yoke is an ingenious mechanism for t

dual piston motion into rotational motion.

advantage of minimizing lateral forces acti

pistons making for a more efficient, compa

Stirling engine is precisely fit ross yoke


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Basic Theory The pistons of the Stirling Engine are attached to A anreciprocate up and down as the flywheel rotates aroun

. Point A is connected to the expansion space piston

Point C is connected to the compression space piston

Points B and D are pin joints which allow for rotation a

translational motion. Points E and F are pin joints whic

in place they only allow for rotation.


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Reason(s)

We choose Ross Yoke alpha stirling engine because we t

than the crankshaft mechanism for transferring dual

into rotational motion.It has advantage of minimizin

acting on the pistonsso that it works efficiently.

On crankshaft mechanism, there will be angle made bybetween two pistons. This case will affect on the force p

angle will make the force not go forward straightly th

will be some wasted forces.


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Reason(s)

However, Ross Yoke one creates no angle and m

force goes forward straightly. This will minimize

wasted force so that the engine can work more e


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Reason(s)

Crankshaft mechanism Ross Yoke mech


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InitialSketch


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InitialSketch


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InitialSketch


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Future Plan&

Gantt Chart

D:\Gantt Chart.xlsx
http://d/Gantt%20Chart.xlsxhttp://d/Gantt%20Chart.xlsxhttp://d/Gantt%20Chart.xlsxhttp://d/Gantt%20Chart.xlsx


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THANK YOU

Ross-Yoke Alpha Stirling Engine

Documents

Transcript of Ross-Yoke Alpha Stirling Engine