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DESIGN AND FABRICATION OF DOMESTIC DEEP FREEZER
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- Contributor: mr-chris
- engagements: 543
- Case No: 657574pw
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ABSRACT - [ Total Page(s): 1 ]ABSTRACTThis project is on the design and fabrication of deep freezer for the preservation of items/products and making the items to cool. The project is able to develop a simple efficient economical and environmental friendly refrigeration system (A freezer) towards better technological advancement in Nigeria. This project modifies the existing refrigeration system with the use of R-600a which is ozone friendly, and non-contaminant like previous refrigerant of the hydrofluoric-carbon, HFC and CFC like R-12, and R22 which has been phased out according tothe general convection at Britain in 199
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LIST OF TABLES - [ Total Page(s): 1 ]LIST OF TABLE Table 1: Hydrocarbon refrigerant Application (Jones, W.p. [(1996)] Table 2: Common Refrigerant (Jones, W.P. 1996) Table 3: Construction of the Evaporator Table 4: Trouble shooting in domestic refrigerator Table 5: Bill of engineering materials and evaluation ... Continue Reading
LIST OF FIGURES - [ Total Page(s): 1 ]LIST OF FIGUREFigure 1: The Vapor compression refrigeration system Figure 2: Image of refrigeration system Figure3: Pictorial View of a Compressor Figure 4: Pictorial View of a Condenser ... Continue Reading
TABLE OF CONTENTS - [ Total Page(s): 1 ]TABLE OF CONTENTSTitle page Certification Dedication Acknowledgement Abstract Table of content CHAPTER ONE: REFRIGERATION1.0 Introduction 1.1 Aim 1.2 Objectives CHAPTER TWO: 1.1 Literature Review CHAPTER THREEAnalysis of refrigeration system and choice of Project as best 3.0 The cycle operation of 3.1 Types of gas compressor 3.2 Thermodynamic Analysis of Tile System 3.3.1 The Compressor 3.3.2 Tile Condense 3.3.3 The Evaporator 3.3.4 Capillary Tube 3.3.5 Drier 3.3.6 Lagging Material 3.3.7 Cooling Fan 3.3.8 Sheet Metal ... Continue Reading
CHAPTER ONE - [ Total Page(s): 1 ]CHAPTER ONEREFRIGERATION1.0 INTRODUCTIONThe ice cream being sold at the corner stores, the frozen vegetable for dinner, the refreshing water for drinking at the office, water cooler are all dependent on the science of refrigeration. Refrigeration in its specialized forms in a comparative modern development which has been in practice for generations, and its application in controlling environmental condition has made possible some outer space programs and many other scientific and commercial activities as it can be obtained in our houses and on the farm which is considered as an example ... Continue Reading
CHAPTER TWO - [ Total Page(s): 1 ]CHAPTER TWO2.0 LITERATURE REVIEWRefrigeration is branch of engineering that is concerned with the science of producing and maintaining temperature below that of the surrounding atmosphere [Raymond, C.G. (1973)]. It also the process of removing heat from the substance.Before the advent of mechanical refrigeration, water was kept cool by storing in semi-porous pots, so that the water could seep through and evaporate. The evaporation carried away heat and cooled the water [Raymond, C.G. (1 973)].The first development took place in 1834 when Perkins proposed a hand operated compressor workin ... Continue Reading
CHAPTER THREE - [ Total Page(s): 5 ]3.3.4 CAPILLARY TUBEThis device operate on the principle that a given weight of refrigerant liquid will pass through a capillary more readily than the same weight of gas will do at the same pressure. Immediately the condensed refrigerant enters the capillary tube, the mass flow of this refrigerant will be reduced them by giving more room for cooling time.ADVANTAGE OF THE TYPES OF CAPILLARY TUBE USED FOR THIS PROJECT LIES INa. Its simplicityb. Ease of being welded to the suction for heat exchanging purpose.3.3.5 DRIERThe drier is used to absorb moisture content from refrigerant. It contains des ... Continue Reading
CHAPTER FOUR - [ Total Page(s): 5 ]4.3.1 TYPES OF EVAPORATOREvaporators are mainly classified as:i. The dry or direct expansion typeii. The flooded type.I. THE DRY OR DIRECT EXPANSION TYPEA part of the heat transfer surface is used for superheating the vapor. Therefore refrigerant leaves the coil in a dry state that is as a dry vapor. [Althouse, A. D(1968)].II. THE FLOODED TYPEIf flooded evaporators, the liquid refrigerant covers the entire heat- surface. As the liquid refrigerant leaves the evaporator, any liquid refrigerant present is recalculated, this allowing only slightly superheated gas to enter the ... Continue Reading
CHAPTER FIVE - [ Total Page(s): 3 ] ... Continue Reading
CHAPTER SIX - [ Total Page(s): 1 ]CHAPTER SIXCONCLUSION AND RECOMMENDATION6.1 CONCLUSION In the designing and fabrication of this project, titled the design and fabrication of domestic refrigerator using mild steel as water resisting cabinet, the design is economic and technological soundness when taking into consideration; the durability and the behavior of the material used under the application were also put into consideration. The principles of thermodynamic were taken into consideration which is the basic principle of this project, i.e. Refrigeration cycle. Special attentions were taken in the assembly of the ... Continue Reading
REFRENCES - [ Total Page(s): 1 ]REFERENCESAlthouse, A.D Braciand, A.F. and Carl, H. (1968), “Refrigeration and Air Conditioningâ€, first Edition, The Good Heart-will Cox Company Inc., London. Page 17-18.Andrew, D. & Alfred, F.B. (1970), “Modern Refrigerator and Air Conditioningâ€, 3rd Edition, Sunmill Press, New York, pp 256.Croker, H.R. & A.Q. (1993), “Piping Hand Bookâ€, 7th Edition, Green Hill Book Company, New York, pp. 2 1-25.Gunther, C.R. (1973), “Refrigeration, Air-Conditioning and Cold Storageâ€, First Edition, Bally Bros and Swamfem Ltd., London. Page 29-31.Gutkowski, M.K. ... Continue Reading
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ABSRACT - [ Total Page(s): 1 ]ABSTRACTThis project is on the design and fabrication of deep freezer for the preservation of items/products and making the items to cool. The project is able to develop a simple efficient economical and environmental friendly refrigeration system (A freezer) towards better technological advancement in Nigeria. This project modifies the existing refrigeration system with the use of R-600a which is ozone friendly, and non-contaminant like previous refrigerant of the hydrofluoric-carbon, HFC and CFC like R-12, and R22 which has been phased out according tothe general convection at Britain in 199
... Continue Reading
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