PROJECT REPAIR AND FABRICATION OF A REFRIGERATOR SYSTEM

By

ATITI HENRY ME/N2002/088

Presented To

Mechanical Engineering Department

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ABSTRACT

Refrigeration is a branch of science that deals with the process of removing heat from a substance or space in order to make it cooler.

Refrigerator is defined as a device that is used in cooling the internal temperature below the room temperature (that is between 250C to 300C).Generally, however, for a space or substance to be cooler, it must loss that heat to another. Also, for a space or substance to get hotter, it must absorb heat from another, which must be at higher temperature. For both process to occur, heat must be absorbed or lost, thus heat is the characteristics agent of heating and cooling, consequently, for heat flow there is absorbs at a lower temperature region and rejected at a higher temperature region, which is the quantity being determined by the temperature gradient of the two regions.

TABLE OF CONTENTS

Title Page

Letter of Transmittal

Signature Page

Release Page

Approval page

Dedication

Acknowledgement

Table of Contents

CHAPTER ONE

Introduction

CHAPTER TWO

Refrigerant Properties and Specific Application

CHAPTER THREE

The Various Instruments for Refrigeration Repairs

CHAPTER FOUR

Analysis of Common Refrigeration

Faults, Fault Tracing, Repair and Maintenance of Refrigerators

CHAPTER FIVE

Sequence of Operation

Cost Evaluation

Bibliography