TABLE OF CONTENTS
LIST OF FIGURES
LIST OF TABLES
1.1 Statement of Problem
1.2 Objective of Study
1.3 Significance of Study
1.4 Scope of Study
2.0 Literature Review
2.1 History of Air Conditions
2.2 Basic Air Conditioning Terminologies
2.3 Operating of Window Air Conditioning Systems
2.4 Refrigeration Cycle of Window Air Conditioning System
2.5 Major Components of Air Conditioning System
2.6 Common Refrigerants and their properties
3.0 Psychrometric and Calculations for Air Conditioning Design
3.1 Calculations for Air Conditioning Design
3.2 Application of psychrometric to Air Conditioning Design
3.3 Design Construction Process
4.1 Factors Affecting the Performance of window Air Conditioning System
4.2 Methods of improving the performance of window Air Conditioning System
4.3 Maintenance of window Air Condition Systems
Conclusion and Summary
LIST OF FIGURES
Figure 2.1 External and internal structure of the window Air Conditioning Unit
Figure 2.2 Internal structure of a window Air Conditioning Unit showing its Refrigeration Cycle
Figure 2.3 A simple stylized diagram of the Refrigeration Cycle
Figure 2.4a Ideal vapour Compressions Cycle
Figure 2.4b T-S diagram showing the idea vapour Compression Cycle
Figure 2.5 Inner view of the window Air Conditioner showing the major components of the Air conditioner
Figure 2.6 Modern R-22 reciprocating refrigeration compressor
Figure 2.7 Schematic diagram of the reciprocating compressor
Figure 2.8 Window Air Conditioning Condenser
Figure 2.9 Expansion Valve
Figure 10 Evaporator coil
Figure 2.11 Air filter
Figure 3.1 Showing the variables in a typical psychometric chart for any given point.
Figure 3.2 A bridge ASHRAE psychrometric chart
Figure 3.3 Psychrometric chart showing scale of Moisture content and Dry-Bulb temperature
Figure 3.4 Showing the Design condition of window Air Conditioning Unit
Figure 3.5 Ashrae psychrometric chart for R-22 refrigerant
Figure 3.6 Pressure-Enthalpy (p-h) and termperature- Entropy (t-s) of vapour compression refrigeration system
Figure 3.7 Casing of the window Air Condition Unit
Figure 3.8 Exploded view of the window Air Conditioning Unit
LIST OF TATBLES
Table 1 Property of commonly used Refrigerants
Table 2 Performance of commonly used Refrigerants
Table 3 Percentage proportion of the various components of Dry Air
Table 4 Showing the required capacity per room size
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.
1.1 STATEMENT OF PROBLEM
The need of adequate supply of comfortable environment in our homes and industries cannot be overemphasized. Due to our temperature climate, there is need for the improvement of home and office working conditions by the use of Air Conditioning Systems.
1.2 OBJECTIVE OF THE STUDY
The purpose of this study is to reveal the method of improving the performance of window air conditioning system and how its maintenance can be carried out property to provide comfort to the occupants and patrons of the conditioned space, to identity the factors contributing to poor performance of air conditioning system and how to improve the economic life span of the unit.
1.3 SIGNIFICANCE OF STUDY
The relevance of this study is to proffer ways to improve the performance of window air conditioning system with a view to establishing a measure of remedy.
1.4 SCOPE OF STUDY
The project work is based on the cooling system of window air conditioning system and how its performance can be improved.
The methods adopted for the purpose of this research work were purely analytical with sources of information from various forms of the modern media like the internet, encyclopedia and the Enugu State University of Science and Technology library.
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