ABSTRACT

The project of construction is one (1) horse power Air conditioning unit which was executed successfully.  With up to seventy five percent (75%) efficient performance.

The project started with the construction of the size of the air conditioning unit.  The air conditioning unit is 60x40x 45cm in dimension.  Air conditioners employ the same operating principle and basic components as your home with a cold indoor coil called the Evaporator.  The condenser, a hot outdoor coil, releases the collected heats outside.  The evaporator an condenser coils are serpentine tubing surrounded by aluminum fins.  This tubing is usually mad of copper.  A pump, called the compressor, moves a copper.

The air conditioning unit was produced with the following.

Compressor                                      I horsepower

Condenser                                        I horsepower

Copper tube                                      5mm diameter

TABLE OF CONTENT Chapter one

1.0       Introduction

1.1         Historical Background and Development of air conditioning unit (IHP)

1.2         Air conditioning principle

CHAPTER TWO

2.0       LITERATURE REVIEW

MODE OF OPERATION OF AIR CONDITIONING UNIT.

2.1         COMPRESSION CYCLE OPERATION

2.2         AIR CONDITIONING COMPONENTS AND THEIR FUNCTIONS

2.3         TYPES OF AIR CONDITIONING UNIT

CHAPTER THREE

3.0       CONSTRUCTION PROCEDURE

3.1         ECONOMIC ANALYSIS

CHAPTER FOUR

4.0       RECOMMENDATION

4.1       CONCLUSION

REFERENCE

APPENDIX

CHAPTER ONE

1.0       INTRODUCTION

Air conditioning unit, it deals with the design considerations and the operations of typical air-conditioning systems for human comfort and for industrial process.

Air conditioning device is common over the world and is regarded as a commercial and business necessity in nearly all tropical nations.

Today in business, industries, schools hospitals, hotels, theatres, comes, vehicles offices. Aim conditioning is no longer luxuing but an essential part of modern living.  Air conditioning systems are used in industrial productions and such relevant activities involving computers, electronics air craft, Automobile precision, manufacturing nuclear power optics and synthetic in fact, if not for the development and progress in the field of cooling unit like air conditioning unit.

1.1       HISTORICAL BACKGROUND AND DEVELOPMENT OF AIR CONDITIONING UNIT.

The development of air conditioning industries is an interesting story.  Illustrating the phases and progress made from the initial development of air conditioning device, in the late 1900’s.  it was mechanical refrigeration that energered first in 1900’s.  It was units 1917 that WILLS. CARRIES began to meet the challenge of designing suitable equipment.

The revolution in most design was recorded between 1930 and 1940, which witnessed the set up of different corporations and industries that harnessed or to produce scientific and engineering principle of cooling in the production of refrigeration of different sizes and shape.

In more light of the above, WILLIS N. CARRIER was the first man to produce an air conditioning unit, due to that, he was taken as the father of Air conditioning unit or cool system.  Still date, Willis model of air conditioning units   are in existence but with more materialized and civilized way.  This bring more credit to WILLIS.

1.2       AIR CONDITIONING PRINCIPLES

The air conditioning uses the principle of CARNOT CYCLE in which heat is received by the working FREON or third of high temperature and rejected at a temperature which show that the amount of net work is done by the working third.  In the case of reversed CARNOT CYCLE, heat is received by the working third at a low temperature and rejected at a high temperature this means that a net amount of work is done on the working third.  This process is known as refrigeration cyle

The purpose of air conditioning is to extract heat from a cold space practically, air conditioning is carried out in a separate component such that potential and kinetic energy between the inlet and outlet of each component is negligible.  The working third (from) is usually in liquid or vapour phase.

The air conditioning cycle as is equally known as refrigeration is normally done by evaporation of liquid refrigerate, thereby extracting heat from the medium to be cooled.  There are four (4) major steps of removing heat from the evaporation refrigerant by putting it in the liquid state so that it can be repeatedly used in a continuous process.  The essential components of an air conditioning unit are:-

i.              Evaporator

ii.            Compressor

iii.           Condenser

iv.           Expansion value

v.            Filter driver

vi.           Theemostat

vii.          Fan capacitor

viii.        Fan motor

ix.           Relay

x.            Overload protector

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