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Refrigeration Trade Theory N2
N. Taylor · e-book
R225.75 incl. VAT
Printed copy: R362.25 incl. VAT.
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About this book
The NATED N2 textbook for Refrigeration Trade Theory. By N. Taylor, published by Hybrid Learning Solutions.
- Level: N2
- ISBN (e-book): 978-1-928367-51-2
- ISBN (print): 978-1-928203-26-1
- Pages: 270
What the book covers
The topics in this book include:
- Module 1: External-drive compressors; Hermetic compressors; Compression cycle showing the two pressure conditions; Illustrates this.
- Module 2: Flooded and dry-expansion evaporators; Types of construction; Bare-tube evaporators; Plate-surface evaporators; Finned evaporators; Evaporator capacity; U or overall conductance factor; The advantage of fins.
- Module 3: Air-cooled condensers; Water-cooled condenser systems; Evaporative condensers; Condenser capacity; Condenser application.
- Module 4: Cooling tower design; Cooling tower rating and selection; Condenser by-pass.
- Module 5: Hand expansion valve; Capillary tube; Automatic Expansion Valve (AEV); Thermostatic Expansion Valve (TEV).
- Module 6: The purpose of each component and accessory.
- Module 7: Low-pressure cut out switch; High-pressure cut out switch; Oil failure switch; Oil control systems; Temperature control principles - sensing bulb; Thermostatic control mechanism construction - vapour pressure; Temperature control principles - bimetal; Thermostatic control mechanism construction - bimetal.
- Module 8: Identifying the materials in use; Piping types and sizes; Typical applications of piping; The handling and storage of piping; The importance of keeping piping clean and dry; The implications of mismatched piping and fittings; Pipe fitting and jointing methods; Cleaning methods and the use of solvents.
- Module 9: Types of fans; Types of fan drives.
- Module 10: The operation of a vapour compression refrigeration system; Components and pipes and direction of refrigerant flow; The relationship between pressure and temperature of a refrigerant.
- Module 11: High-Vacuum Gauges; Gauge manifolds; Temperature recorders in the load; Electronic Leak Detector; Vacuum pumps.
- Module 12: Ice on the evaporator; Moisture and ice in the cabinet insulation; Temperature-pressure conditions; External servicing operations; Internal service operations.
- Module 13: Tools; Overhauling an hermetic system; Diagnosing component problems; Dismantling a system; Evacuating a system with a vacuum pump.
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