CONSTRUCTION OF A MOBILE REFRIGERATOR
By
ASADU, EVARISTUS O. ME/N2002/052
Presented To
Department of Mechanical Engineering
ABSTRACT
This write up is a detailed of the process and formulation of plan for the physical realization of the construction of a mobile refrigerator.
It is divided into chapters, which discussed extensively, the practical refrigeration cycle.
Chapter one discussed the brief historical sketch of the principle of the design, purpose of construction, importance attached and specification, statement and problems.
Chapter two discusses the literature review, which is the principle of the design as related to the past work of scientists and engineers.
Chapter three talks about the nature of materials selected and why they were preferable to other materials.
Chapter four portrayed the calculation aspect of the project and finally,
Chapter five discussed about cost analysis, moreover, under this chapter, the recommendation precautions, causes of faults and remedies, conclusion were also put into consideration.
TABLE OF CONTENTS
Title Page i
Letter of Transmittal ii
Release Page iii
Approval Page iv
Dedication v
Acknowledgement vi
Table of Contents vii
Abstract x
CHAPTER ONE
INTRODUCTION 1
1.1 A brief Historical sketch of refrigeration (man-made) 2
1.2 The purpose of construction 6
1.3 Importance and specification of 7
1.4 Statement of the problem 8
CHAPTER TWO
LITERATURE REVIEW 10
Refrigeration as Related to Thermodynamic Processes 11
2.1 The Carnot Cycle 11
2.2 The Reversed Carnot Cycle 13
2.3 Vapour â€" Compression Cycle 14
2.4 Absorption Cycle 15
2.5 Steam â€" Jet Cycle 17
2.6 Air Cycle 17
2.7 Practical Cycle To The Design 18
2.8 The Condition of Refrigerant Leaving each
of the Major Component of the Design. 19
CHAPTER THREE
3.1 Material Selection and Apparatus 22
3.2 Method of Construction and procedure 25
3.3 Internal view of the refrigerator (frame) 29
3.4 Description of some of the tools used 29
3.5 Lists of standard items and their functions 33
3.6 Other assembly 34
CHAPTER FOUR
4.1 Calculations 35
4.2 Determination of the Compressor Size or Capacity 35
4.3 Determination of Evaporator,
Condenser and Capillary Sizes 36
4.4 Co-efficient of performance (cop) 38
4.5 Testing and Evaluation 39
4.6 Principle of Operation 41
CHAPTER FIVE
5.1 Cost Analysis 42
5.2 Labour Cost 43
5.3 Recommendations 44
5.4 Faults, causes and remedies 46
5.5 Definition of terms 47
5.6 Conclusions 48
Reference 50
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