Experimental Analysis of Fly Wheel Used In Mechanics LAB,

ME department, KUET

By

Md. Tanvir Khan (Anik)

Department of Mechanical Engineering

Khulna University of Engineering & Technology

The special works submitted in partial fulfillment of the requirements for

2nd Year, ME 2210, in

Department of Mechanical Engineering

Khulna University of Engineering & Technology

Khulna 920300, Bangladesh

14 February, 2016

ACKNOWLEDGEMENT

Alhamdulillah, at first many many thanks to almighty Allah who makes me capable to complete

this special work carefully and successfully. Then I would like to thank my special work

supervisors and course teachers Dr. Sobahan Mia and Mr. Dipayan Mondal of Department of

Mechanical Engineering of Khulna University of Engineering & Technology, Bangladesh, for

their proper supervision, guidance, inspiration, suggestion and all kinds of supports in performing

and completing the dissertation work in time. I also felt my heart-felt gratitude to the head of the

department professor Dr. Nawsher Ali Moral who tolerated our short comings, showed his

patience in our all kind of activities relevant to research works and made me confident enough in

the research field. I also would like to express my sincere gratitude and thanks to the vice

chancellor Dr. Muhammed Alamgir, Khulna University of Engineering & Technology,

Bangladesh for his cordial cooperation. I also want to thank all the lab demonstrators who help me

to complete this special work perfectly and successfully.

Author

II

ABSTRACT

The utilizations of stored flywheel energy are huge and they are varied in different ways involving

a lot of applications, ranging from the potter's wheel used since many years before to the present

days energy recuperation in automotive vehicles and many other purposes. Generally, stored

flywheel energy can be used individually or in combination in three ways: by dissipation in

overcoming resistances, by exchange to potential energy, and by kinetic transfer to another mass.

This last method of utilization offers the greatest potential. Several research and development

programs applying this principle are described. Our concentration in this paper is the experimental

analysis of the fly wheel used in mechanics lab, ME department, KUET. The main objectives of

this special work were to observe the characteristics of storing energy in a flywheel and to

determine the potential and kinetic energy through a particular procedure. Moreover the law of

conservation of energy was verified. By completing the experiment I will be able to know the

different applications of flywheel in various practical sectors where stored energy is barely needed.

I will also know the mechanism of storing energy in a flywheel and give the energy back when

necessary.

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Content

PAGE

Title page I

Acknowledgement II

Abstract III

Contents IV

List of tables VI

List of figures VII

List of illustration

Nomenclature VIII

CHAPTER I Introduction 1

1.1 Overview 1

1.2 Objectives 1

1.3 Outlines 1

1.4 Mechanism of transferring energy 2

1.5 Types of flywheel 2

CHAPTER II History and Background 7

2.1 Ancient flywheels 7

2.2 Flywheels of the Industrial Revolution 7

2.3 Modern flywheels 8

CHAPTER III Working Principle of Flywheel 10

3.1 Conservation laws 10

3.2 Process of storing energy in flywheel 11

3.3 Storage of energy 12

3.4 The Basics 13

3.5 Clean Source Flywheel

3.6 Retaining energy of fly wheel

13

14

CHAPTER IV Theory 15

4.1 For potential energy 15

4.2 For kinetic energy 15

4.3 Apparatus required 16

CHAPTER V Working Procedure 17

CHAPTER VI Experimental Data 18

6.1 Data table for potential energy: 18

6.2 Data for kinetic energy 18

IV

CHAPTER VII Result and Discussion 19

7.1 Result interpretation 19

7.2 Discussion 21

CHAPTER VIII Application 22

CHAPTER IX Advantages and disadvantages of flywheels 24

9.1 Advantage 24

9.2 Disadvantage 24

References 25

V

List of Tables

Table No Description Page

6.1 Data for potential energy 18

6.2 Data for kinetic energy 18

7.1.1 Result interpretation for potential energy 19

7.1.2 Result interpretation for kinetic energy 19

VI

List of Figures

Figure No DESCRIPTION Page No

01 Simple flywheel 02

02 Naturally aspirated flywheels 03

03 Dual mass flywheels 03

04 Speed turbo flywheels 04

05 Some types of flywheel 05

06 Ancient flywheel 07

07 Modern flywheel 09

08 Energy balancing graph 12

09 Complex flywheel 13

10 Clean source flywheel 13

11 Retaining energy 14

12 Flywheel arrangement 17

13 Initial potential energy Vs. Load diagram 19

14 Final potential energy Vs. Load diagram 20

15 Kinetic energy Vs. Load diagram 20

16 Applications of flywheel 23

VII

Nomenclature

Symbol Name Unit

W Weight N

H1, H2 Height m

t Time s

n Revolution

VIII