📘 قراءة كتاب Solution of Problems in Heat Transfer Transient Conduction or Unsteady Conduction أونلاين
Solution of Problems in Heat Transfer
Transient Conduction or Unsteady
Conduction
Author
Assistant Professor: Osama Mohammed Elmardi
Mechanical Engineering Department
Faculty of Engineering and Technology
Nile Valley University, Atbara, Sudan
First Edition: April 2017
Contents
Subject Page
Number
Dedication ii
Acknowledgement iv
Preface v
Contents viii
CHAPTER ONE : Introduction
1.1 General Introduction 2
1.2 Definition of Lumped Capacity or Capacitance System 3
1.3 Characteristic Linear Dimensions of Different Geometries 3
1.4 Derivations of Equations of Lumped Capacitance System 5
1.5 Solved Examples 7
CHAPTER TWO : Time Constant and Response of Temperature
Measuring Instruments
2.1 Introduction 17
2.2 Solved Examples 18
CHAPTER THREE : Transient Heat Conduction in Solids with Finite
Conduction and Convective Resistances
3.1 Introduction 25
3.2 Solved Examples 26
CHAPTER FOUR : Transient Heat Conduction in Semi – Infinite Solids
4.1 Introduction 38
4.2 Penetration Depth and Penetration Time 42
4.3 Solved Examples 43
CHAPTER FIVE : Systems with Periodic Variation of Surface Temperature
5.1 Introduction 51
5.2 Solved Examples 53
ix
CHAPTER SIX : Transient Conduction with Given Temperatures
6.1 Introduction 55
6.2 Solved Examples 55
CHAPTER SEVEN : Additional Solved Examples in Lumped Capacitance
System
7.1 Example (1) Determination of Temperature and Rate of Cooling
of a Steel Ball
58
7.2 Example (2) Calculation of the Time Required to Cool a Thin
Copper Plate
59
7.3 Example (3) Determining the Conditions Under which the
Contact Surface Remains at Constant Temperature
62
7.4 Example (4) Calculation of the Time Required for the Plate to
Reach a Given Temperature
63
7.5 Example (5) Determination of the Time Required for the Plate to
Reach a Given Temperature
64
7.6 Example (6) Determining the Temperature of a Solid Copper
Sphere at a Given Time after the Immersion in a Well – Stirred Fluid
65
7.7 Example (7) Determination of the Heat Transfer Coefficient 66
7.8 Example (8) Determination of the Heat Transfer Coefficient 67
7.9 Example (9) Calculation of the Initial Rate of Cooling of a Steel
Ball
69
7.10 Example (10) Determination of the Maximum Speed of a
Cylindrical Ingot Inside a Furnace
70
7.11 Example (11) Determining the Time Required to Cool a Mild
Steel Sphere, the Instantaneous Heat Transfer Rate, and the Total
Energy Transfer
71
7.12 Example (12) Estimation of the Time Required to Cool a
Decorative Plastic Film on Copper Sphere to a Given Temperature
using Lumped Capacitance Theory
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