Introduction to Enhanced Heat Transfer (eBook)

Contents 5
Nomenclature 7
Chapter 1: Heat Transfer Fundamentals for Design of Heat Transfer Enhancement Devices 12
1.1 Passive and Active Enhancement Techniques 19
1.2 Benefits of Enhancement 22
References 25
Chapter 2: Active and Passive Techniques: Their Applications 28
2.1 Active Techniques 28
2.2 Passive Techniques 32
2.3 Commercial Applications of Heat Transfer Augmentation 37
2.3.1 Corrugated Tubes, Dimpled Tubes and Three-Dimensional Roughness 38
2.3.2 Integral Fin Tubes, Ribbed Tubes and Microchannels 40
2.3.3 Enhanced Condensing Tubes 50
2.3.4 Enhanced Boiling Tubes 52
2.3.5 Inserts and Swirl Devices 56
2.3.6 Plate-Type Heat Exchangers 59
2.3.7 Other Relevant Works 63
References 73
Chapter 3: Heat Exchanger Design Theory, Fin Efficiency, Variation of Fluid Properties 84
3.1 Fin Efficiency 85
3.2 Heat Transfer Coefficients and Friction Factor 86
3.2.1 Laminar Flow in Ducts 87
3.2.2 Turbulent Flow in Ducts 88
3.2.3 Tube Banks (Single-Phase Flow) 88
3.2.4 Film Condensation and Nucleate Boiling 88
3.3 Effect of Fluid Properties 90
3.4 Reynolds Analogy 92
References 92
Chapter 4: Fouling on Various Types of Enhanced Heat Transfer Surfaces 93
4.1 Fouling Fundamentals: Gases and Liquids 94
4.2 Liquid Fouling in Internally Finned Tubes, Rough Tubes, Plate-Fin Geometry and Fouling in Plate Heat Exchanger 99
4.3 Modelling of Fouling in Enhanced Tubes and Correlations for Fouling in Rough Tubes 102
References 102
Chapter 5: Conclusions 106
Additional References 107
Index 109