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TITLE PAGE
THE ANALYSIS OF THE EFFECT OF CONDENSER SIZE ON THE PERFORMANCE OF A REFRIGERATOR
BY
---
EE/H2013/01430
DEPARTMENT OF ----
SCHOOL OF ---
INSTITUTE OF ---
DECEMBER,2018
APPROVAL PAGE
This is to certify that the research work, the analysis of the effect of condenser size on the performance of a refrigerator by ---, Reg. No. EE/H2007/01430 submitted in partial fulfillment of the requirement award of a Higher National Diploma on --- has been approved.
By
--- . ---
Supervisor Head of Department.
Signature………………. Signature……………….
……………………………….
---
External Invigilator
DEDICATION
This project is dedicated to Almighty God for his protection, kindness, strength over my life throughout the period and also to my --- for his financial support and moral care towards me.Also to my mentor --- for her academic advice she often gives to me. May Almighty God shield them from the peril of this world and bless their entire endeavour Amen.
ACKNOWLEDGEMENT
The successful completion of this project work could not have been a reality without the encouragement of my --- and other people. My immensely appreciation goes to my humble and able supervisor mr. --- for his kindness in supervising this project.
My warmest gratitude goes to my parents for their moral, spiritual and financial support throughout my study in this institution.
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The performance of Vapor compression refrigeration system (VCRS) depends on the performance of all its components like compressor, condenser, expansion value and evaporator. The current paper is involved in analysis of the effect of condenser length on the performance of on VCRS.
Condenser is a heat exchanger where heat transfer takes place between the super heated refrigerant received from the compressor and the cooling medium of the condenser. The condenser removes the heat from refrigerant which received in two stages. Heat is received by the refrigerant in the evaporator and also heat is added by the compressor during compression. The refrigerant is first cooled to saturation and then condensed to liquid state. In Domestic refrigerator the condenser coil is used to discharge the heat from the refrigerant after operating the compression to the atmosphere. In this present work a condenser coil with different lengths are tested.
In the present work condenser with variable length ((9.45m, 9.75m, 10.06m) has been used for this investigation by keeping the diameter as constant and compared with existing condenser of 9.14m length. The results shown that 9.75m length condenser coil gives optimum performance than the remaining which gives higher COP, higher heat rejection, refrigeration effect and lower power consumption.
TABLE OF CONTENTS
COVER PAGE
TITLE PAGE
APPROVAL PAGE
DEDICATION
ACKNOWELDGEMENT
ABSTRACT
CHAPTER ONE
1.0 INTRODUCTION
1.1 BACKGROUND OF THE STUDY
- AIM OF THE STUDY
- OBJECTIVE OF THE STUDY
- PURPOSE OF THE STUDY
- SIGNIFICANCE OF THE STUDY
- AREA OF APPLICATION OF THE STUDY
CHAPTER TWO
LITERATURE REVIEW
- OVERVIEW OF CONDENSER
- REVIEW OF THE RELATED STUDY
- REVIEW OF DIFFERENT TYPES OF CONDENSERS
- APPLICATIONS OF A CONDENSER
- REFRIGERATION AS RELATED TO THERMODYNAMICS
CHAPTER THREE
3.0 METHODOLOGY
3.1 SELECTION OF CONDENSER
3.2 EXPERIMENTAL SETUP
3.3 EXPERIMENTAL PROCEDURE
3.4 PERFORMANCE CALCULATIONS
CHAPTER FOUR
- RESULT
- CALCULATION OF PERFORMANCE PARAMETERS
CHAPTER FIVE
- CONCLUSION
- REFERENCES
CHAPTER ONE
1.0 INTRODUCTION
A simple vapour compression refrigeration system consists of mainly five components namely compressor, condenser, expansion device, evaporator and a filter/drier as shown in the figure below. The following study is focused towards finding out the effect of the condenser tube on the performance of the refrigeration system. A condenser tube is a small diameter tube which is used for the rejection of heat from refrigerant to surroundings to decrease the temperature of refrigerant or change of phase of the flowing fluid. The pressure difference between the entry and exit ends of the condenser tube is always equal to the discharge pressure of compressor. The effect of the condenser has been investigated by many researchers in the past and encouraging results were obtained.
Figure 1: Basic cycle of domestic refrigeration system
1.1 BACKGROUND OF THE STUDY
Refrigeration: “Refrigeration is the science of providing and maintaining temperature below that of surrounding (ambient) temperature”. The term “maintain” implies, the continuous extraction or removal of heat from a body which is already at lower temperature than its surroundings.
Removal of heat from a body at lower temperature is possible only with the aid of external agency according to the Second Law of Thermodynamics.
Vapor Compression Refrigeration system ( the schematic is shown in figure 2 below) is an improved type of air refrigeration system. The ability of certain liquids to absorb enormous quantities of heat as they vaporize is the basis of this system. Compared to melting solids (say ice) to obtain refrigeration effect, vaporizing liquid refrigerant has more advantages. To mention a few, the refrigerating effect can be started or stopped at will, the rate of cooling can be predetermined, the vaporizing temperatures can be governed by controlling the pressure at which the liquid vaporizes. Moreover, the vapor can be readily collected and condensed back into liquid state so that same liquid can be re-circulated over and over again to obtain refrigeration effect. Thus the vapor compression system employs a liquid refrigerant which evaporates and condenses readily. The System is a closed one since the refrigerant never leaves the system.
The coefficient of performance of a refrigeration system is the ratio of refrigerating effect to the compression work; therefore the coefficient of performance can be increased by increasing the refrigerating effect or by decreasing the compression work.
Figure 2: Schematic Diagram for the Vapor Compression Refrigeration Cycle
1.2 AIM OF THE STUDY
The main aim of this work is to carry out an experiment that produces an effect of using different diameter of condenser in a refrigerator.
1.3 OBJECTIVE OF THE STUDY
At the end of this work, the student involved shall understand the following:
- The work or function of condenser in are refrigerator
- the effect of using different sizes of condenser in refrigerator
- Shall be able to know other application of the condenser.
1.4 PURPOSE OF THE STUDY
The main purpose of this study is to know the condition for selecting suitable size of condenser in a refrigeration system.
1.5 SIGNIFICANCE OF THE STUDY
As a student of mechanical engineering, this work has exposed me to the function and effect of using a wrong size of condenser in refrigerator. As a result of this work, different size of condenser was introduced to me. Another area this study has helped me was on the other application of condenser.
1.6 APPLICATION OF THE STUDY
This study is not only useful to student of mechanical engineering but also to the producer and maintaining personnel. For students, this study made them to know more about refrigerator working principle and parts description. For the producer this study can be a guide to him when selecting the size of condenser to use for his product. For the maintaining personnel, this study will help him to trouble shoot fault of refrigerator when failure occurs.
CHAPTER TWO
2.0 LITERATURE REVIEW
2.1 OVERVIEW OF CONDENSER
CHAPTER TWO: The chapter one of this work has been displayed above. The complete chapter two of the analysis of the effect of condenser size on the performance of a refrigerator is also available. Order full work to download. Chapter two of the analysis of the effect of condenser size on the performance of a refrigerator consists of the literature review. In this chapter all the related work on the analysis of the effect of condenser size on the performance of a refrigerator was reviewed.
CHAPTER THREE: The complete chapter three of the analysis of the effect of condenser size on the performance of a refrigerator is available. Order full work to download. Chapter three of the analysis of the effect of condenser size on the performance of a refrigerator consists of the methodology. In this chapter all the method used in carrying out this work was discussed.
CHAPTER FOUR: The complete chapter four of the analysis of the effect of condenser size on the performance of a refrigerator is available. Order full work to download. Chapter four of the analysis of the effect of condenser size on the performance of a refrigerator consists of all the test conducted during the work and the result gotten after the whole work
CHAPTER FIVE: The complete chapter five of design and construction of a the analysis of the effect of condenser size on the performance of a refrigerator is available. Order full work to download. Chapter five of the analysis of the effect of condenser size on the performance of a refrigerator consist of conclusion, recommendation and references.
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