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Preface xviii Nomenclature xxvi CHAPTER ONE BASICS OF HEAT TRANSFER 1 1-1 Thermodynamics and Heat Transfer 2 Application Areas of Heat Transfer 3 Historical Background 3 1-2 Engineering Heat Transfer 4 Modeling in Heat Transfer 5 1-3 Heat and Other Forms of Energy 6 Specific Heats of Gases, Liquids, and Solids 7 Energy Transfer 9 1-4 The First Law of Thermodynamics 11 Energy Balance for Closed Systems (Fixed Mass) 12 Energy Balance for Steady-Flow Systems 12 Surface Energy Balance 13 1-5 Heat Transfer Mechanisms 17 1-6 Conduction 17 Thermal Conductivity 19 Thermal Diffusivity 23 1-7 Convection 25 1-8 Radiation 27 1-9 Simultaneous Heat Transfer Mechanisms 30 1-10 Problem-Solving Technique 35 A Remark on Significant Digits 37 Engineering Software Packages 38 Engineering Equation Solver (EES) 39 Heat Transfer Tools (HTT) 39 Topic of Special Interest: Thermal Comfort 40 Summary 46 References and Suggested Reading 47 Problems 47 CHAPTER TWO HEAT CONDUCTION EQUATION 61 2-1 Introduction 62 Steady versus Transient Heat Transfer 63 Multidimensional Heat Transfer 64 Heat Generation 66 2-2 One-Dimensional Heat Conduction Equation 68 Heat Conduction Equation in a Large Plane Wall 68 Heat Conduction Equation in a Long Cylinder 69 Heat Conduction Equation in a Sphere 71 Combined One-Dimensional Heat Conduction Equation 72 2-3 General Heat Conduction Equation 74 Rectangular Coordinates 74 Cylindrical Coordinates 75 Spherical Coordinates 76 2-4 Boundary and Initial Conditions 77 1 Specified Temperature Boundary Condition 78 2 Specified Heat Flux Boundary Condition 79 3 Convection Boundary Condition 81 4 Radiation Boundary Condition 82 5 Interface Boundary Conditions 83 6 Generalized Boundary Conditions 84 2-5 Solution of Steady One-Dimensional Heat Conduction Problems 86 2-6 Heat Generation in a Solid 97 2-7 Variable Thermal Conductivity, k ( T ) 104 Topic of Special Interest: A Brief Review of Differential Equations 107 Summary 111 References and Suggested Reading 112 Problems 113 CHAPTER THREE STEADY HEAT CONDUCTION 127 3-1 Steady Heat Conduction in Plane Walls 128 The Thermal Resistance Concept 129 C ONTENTS vii
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CONTENTS viii Thermal Resistance Network 131 Multilayer Plane Walls 133 3-2 Thermal Contact Resistance 138 3-3 Generalized Thermal Resistance Networks 143 3-4 Heat Conduction in Cylinders and Spheres 146 Multilayered Cylinders and Spheres 148 3-5 Critical Radius of Insulation 153 3-6 Heat Transfer from Finned Surfaces 156 Fin Equation 157 Fin Efficiency 160 Fin Effectiveness 163 Proper Length of a Fin 165 3-7 Heat Transfer in Common Configurations 169 Topic of Special Interest: Heat Transfer Through Walls and Roofs 175 Summary 185 References and Suggested Reading 186 Problems 187 CHAPTER FOUR TRANSIENT HEAT CONDUCTION 209 4-1 Lumped System Analysis 210 Criteria for Lumped System Analysis 211 Some Remarks on Heat Transfer in Lumped Systems 213 4-2 Transient Heat Conduction in Large Plane Walls, Long Cylinders, and Spheres with Spatial Effects 216 4-3 Transient Heat Conduction in Semi-Infinite Solids 228 4-4 Transient Heat Conduction in Multidimensional Systems 231
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This note was uploaded on 01/28/2010 for the course HEAT ENG taught by Professor Ghaz during the Spring '10 term at University of Guelph.

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toc - cen58933_fm.qxd 9/11/2002 10:56 AM Page vii CONTENTS...

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