Essentials of Radiation Heat Transfer

ISBN-13: 9783030626167 / Angielski / Twarda / 2021 / 212 str.

C. Balaji

Spis treści

1 Introduction                                                                                         1

1.1     Importance of thermal radiation  ............................................. 1

1.2     Nature of radiation .................................................................  6

2 Black body and its characteristics                                                    11

2.1 Solid angle - dco ......................................................................  18

2.2 Spectral or monochromatic radiation intensity, _IA,e . . . .............  23

2.3 Spectral hemispherical emissive power ....................................  24

2.4 Radiation pressure ...................................................................  28

2.5 Relationship between the intensity, I and temperature, T 33

2.6 Planck's distribution .................................................................  38

2.7 The Rayleigh Jeans distribution................................................ 39

2.8 Planck’s distribution - salient features ......................................  52

PROBLEMS ...................................................................................  65

3 Radiative properties of non-black surfaces                                      67

3.1     Spectral directional emissivity, €'(A, T, 0, 0) ........................  70

3.2     Hemispherical spectral emissivity, €),(A, T) ..........................  72

3.3     Directional total emissivity, €'(T, 0, 0) ..................................  73

3.4 Hemispherical total emissivity, €(T) .........................................  74

3.5 Absorptivity, a .........................................................................  84

3.6 Spectral directional absorptivity, a'_{A ....................................................................................}  87

3.7 Hemispherical spectral absorptivity, a),(A,TA) .........................  91

3.8 Directional total absorptivity, a(TA,0,0) ...................................  92

3.9 Hemispherical total absorptivity, a(TA) ....................................  93

3.10 Reflectivity, p ......................................................................  100

3.11 Transmissivity, r ..................................................................  103

3.12 Spectral transmissivity r),(A,t) ..............................................  104

3.13 Optical pyrometry ................................................................  110

PROBLEMS .................................................................................  112

4 Radiation heat transfer between surfaces                                      115

4.1 Enclosure theory ....................................................................  116

4.2 View factor ............................................................................  118

4.3 View factor algebra ................................................................  121

4.4 View factors from direct integration ......................................  134

4.5 Enclosure analysis .................................................................  150

PROBLEMS .................................................................................  172

5 Radiation in participating media                                                    179

5.1 Principal difficulties in studying gas radiation ........................  183

5.2 Important properties for study of gas radiation ......................  183

5.3        Equation of transfer or Radiative transfer equation (RTE) 184

5.4 Solution for the straight path ..................................................  189

5.5 Heat fluxes ............................................................................  190

PROBLEMS .................................................................................  216

6 Introduction to atmospheric radiation                                           217

6.1 Introduction............................................................................ 217

6.2 Electromagnetic spectrum ......................................................  217

6.3 Black body radiation ..............................................................  218

6.4      Radiative transfer equation for a plane parallel atmosphere 220
6.5 Radiative transfer equation (RTE) for an absorbing and

emitting atmosphere ............................................................  221

6.6 Infrared remote sensing .........................................................  222

PROBLEMS .................................................................................  224

7 Inverse problems in radiation                                                         225

7.1 Introduction............................................................................ 225

7.2 Parameter estimation by least squares minimization . . ...........  227

7.3 The Bayesian approach to inverse problems ..........................  233

PROBLEMS .................................................................................  240

Bibliography                                                                                       241

Index                                                                                                   243

O autorze

Dr. C Balaji is currently the T.T.Narendran Chair Professor in the Department of Mechanical Engineering at the Indian Institute of Technology (IIT) Madras, India. He graduated in Mechanical Engineering from Guindy Engineering College, Chennai, in 1990 and obtained his M.Tech (1992) and Ph.D. (1995) from IIT Madras in the area of heat transfer. His areas of interest include heat transfer, computational radiation, optimization, inverse problems, satellite meteorology and atmospheric sciences. He has more than 200 international journal publications to his credit and has guided 30  students so far. Prof. Balaji has several awards to his credit and notable among them include Young Faculty Recognition Award of IIT Madras (2007) for excellence in teaching and research, K.N. Seetharamu Award and Medal for excellence in Heat Transfer Research (2008), Swarnajayanthi Fellowship Award of the Government of India (2008-2013), Tamil Nadu Scientist Award (2010) of the Government of Tamilnadu , Marti Gurunath Award for excellence in teaching (2013) and Mid-Career Research Award (2015) both awarded by IIT Madras. He is a Humboldt Fellow and an elected Fellow of the Indian National Academy of Engineering.  Prof.Balaji has authored  8 books thus far. He is currently the Editor-in-Chief of the International Journal of Thermal Sciences.

Blurb

This book focuses only on the essential topics required to gain an understanding of radiation heat transfer to enable the reader to master more challenging problems. The strength of the book lies in its elaborate presentation of the the powerful radiosity-irradiation method and shows how this technique can be used to solve  a variety of problems of radiation in enclosures made of one to any number of surfaces in both transparent and  participating media. The book  also introduces atmospheric radiation in which engineers can contribute to the technology of remote sensing and atmospheric sciences in general, by a better understanding of radiation.

The author has included pedagogical features such as end-of-chapter exercises and worked examples with varying degrees of difficulty to augment learning and self-testing. The book has been written in an easy- to- follow  conversational style to enhance reader engagement and  learning outcomes. This book will be a useful guide for upper undergraduate and graduate students in the areas of mechanical engineering, aerospace engineering, atmospheric sciences, and energy sciences.