Theory and Calculation of Heat Transfer in Furnaces

Yanguo Zhang, Qinghai Li, Hui Zhou

• Publisher: Academic Press
• Year: 2016
• ISBN:
  9780128010419
• Topic: Physical Sciences
• Subtopic: Thermodynamics

Theory and Calculation of Heat Transfer in Furnaces covers the heat transfer process in furnaces, how it is related to energy exchange, the characteristics of efficiency, and the cleaning of combustion, providing readers with a comprehensive understanding of the simultaneous physical and chemical processes that occur in boiler combustion, flow, heat transfer, and mass transfer.

• Covers all the typical boilers with most fuels, as well as the effects of ash deposition and slagging on heat transfer
• Combines mature and advanced technologies that are easy to understand and apply
• Describes basic theory with real design that is based on meaningful experimental data

Chapter 1

Theoretical Foundation and Basic Properties of Thermal Radiation

Abstract

This chapter briefly outlines the essential characteristics of thermal radiation and the fundamental parameters which describe thermal radiation properties. The thermal radiation theory, Planck’s law, is introduced first, as well as other definitions such as emissive power and specific radiation characteristics. Next, the basic laws of thermal radiation, radiativity of solid surfaces, and energy of thermal radiation are illustrated. Radiative geometric configuration factors are also discussed, as they are important in calculating radiation heat transfer. A simplified radiative heat exchange treatment is then introduced for engineering calculation. The description of the basic laws of thermal radiation and the general methods used in thermal radiation transfer calculation are emphasized, forming a theoretical foundation for solving heat radiation transfer problems and conducting related engineering calculations.

Keywords

thermal radiation

emissive power

Planck’s law

geometric configuration factor

heat exchange

Chapter Outline

1.1 Thermal Radiation Theory—Planck’s Law 3

1.2 Emissive Power and Radiation Characteristics 6

1.2.1 Description of Radiant Energy 6

1.2.2 Physical Radiation Characteristics 9

1.2.3 Monochromatic and Directional Radiation 11

1.3 Basic Laws of Thermal Radiation 12

1.3.1 Planck’s Law and Corollaries 12

1.3.2 Lambert’s Law 15

1.3.3 Kirchhoff’s Law 16

1.4 Radiativity of Solid Surfaces 17

1.4.1 Difference Between Real Surfaces and Blackbod...

Table of contents

• Cover
• Title page
• Table of Contents
• Copyright
• Foreword
• Preface
• Symbols
• Chapter 1: Theoretical Foundation and Basic Properties of Thermal Radiation
• Chapter 2: Emission and Absorption of Thermal Radiation
• Chapter 3: Radiation Heat Exchange Between Isothermal Surfaces
• Chapter 4: Heat Transfer in Fluidized Beds
• Chapter 5: Heat Transfer Calculation in Furnaces
• Chapter 6: Effects of Ash Deposition and Slagging on Heat Transfer
• Chapter 7: Measuring Heat Transfer in the Furnace
• Appendix A: Common Physical Constants of Heat Radiation
• Appendix B: Common Configuration Factor Calculation Formulas
• Appendix C: Example of Thermal Calculation of 113.89 kg/s (410 t/h) Ultra-High-Pressure, Coal-Fired Boiler
• Appendix D: Supplementary Materials
• References
• Subject Index