PARAMETRIC PERFORMANCE EVALUATION OF A WINDOW UNIT AIR-CONDITIONER AND ITS MAINTENANCE

ABSTRACT  The working principles of a window air conditioning system was described with the mode of operationg of the refrigeration cycle and its construcion.  The aim of every window Air conditioning system is to achieve cooling.  Change of temperature system were discussed with the methods of improving the performance of th window Air Conditioning Unit for better efficiency.  This work simply explains how the performance of the window Air Conditioning system can be improved and why it is more economical to use the window air conditioning system than split Unit Air Conditioning system.
TABLE OF CONTENTS COVER PAGE TITLE PAGE APPROVAL PAGE DEDICATION ACKNOWLEDGE 
ABSTRACT  LIST OF FIGURES LIST OF TABLES  CHAPTER ONE 1.0Introduction  1.1Statement of Problem  1.2Objective of Study  1.3Significance of Study  1.4Scope of Study  1.5Methodology 
CHAPTER TWO  2.0Literature Review  2.1History of Air Conditions  2.2Basic Air Conditioning Terminologies  2.3Operating of Window Air Conditioning Systems  2.4Refrigeration Cycle of Window Air Conditioning System  2.5Major Components of Air Conditioning System  2.6Common Refrigerants and their properties
CHAPTER THREE  3.0Psychrometric and Calculations for Air Conditioning Design  3.1Calculations for Air Conditioning Design  3.2Application of psychrometric to Air Conditioning Design 3.3Design Construction Process 
CHAPTER FOUR  4.1Factors Affecting the Performance of window Air Conditioning System  4.2Methods of improving the performance of window Air Conditioning System  4.3Maintenance  of window Air Condition Systems 
CHAPTER FIVE  Conclusion and Summary  REFERENCES  APPENDIX 
LIST OF FIGURES Figure 2.1External and internal structure of the window Air Conditioning Unit  Figure 2.2Internal structure of a window Air Conditioning Unit showing its Refrigeration Cycle  Figure 2.3A simple stylized diagram of the Refrigeration Cycle  Figure 2.4aIdeal vapour Compressions Cycle  Figure 2.4bT-S diagram showing the idea vapour Compression Cycle Figure 2.5Inner view of the window Air Conditioner showing the major components of the Air conditioner Figure 2.6Modern R-22 reciprocating refrigeration compressor  Figure 2.7Schematic diagram of the reciprocating compressor  Figure 2.8Window Air Conditioning Condenser Figure 2.9Expansion Valve Figure 10Evaporator coil  Figure 2.11Air filter  Figure 3.1Showing the variables in a typical psychometric chart for any given point. Figure 3.2A bridge ASHRAE psychrometric chart  Figure 3.3Psychrometric chart showing scale of Moisture content and Dry-Bulb temperature  Figure 3.4Showing the Design condition of window Air Conditioning Unit Figure 3.5Ashrae psychrometric chart for R-22 refrigerant  Figure 3.6Pressure-Enthalpy (p-h) and termperature- Entropy (t-s) of vapour compression  refrigeration system Figure 3.7Casing of the window Air Condition Unit  Figure 3.8Exploded view of the window Air Conditioning Unit 
LIST OF TABLES Table 1Property of commonly used Refrigerants  Table 2Performance of commonly used Refrigerants  Table 3Percentage proportion of the various components of Dry Air  Table 4Showing the required capacity per room size