Energy and Mass Transfers Balance Sheet Approach and Basic Concepts, Volume 1 [Hardcover]

This is the first book of a series aiming at setting the basics for energy engineering. This book presents the fundamentals of heat and mass transfer with a step-by-step approach, based on material and energy balances.

While the topic of heat and mass transfer is an old subject, the way the book introduces the concepts, linking them strongly to the real world and to the present concerns, is particular. The scope of the different developments keeps in mind a practical energy engineering view.

Preface ix

Introduction xiii

Chapter 1. Basic Concepts and Balances 1

1.1. Thermal energy and the first law of thermodynamics 1

1.2. Thermal energy and the second law of thermodynamics 2

1.3. For an energy and mass accounting: balances 3

1.3.1. Accounting principles for system inputs and outputs 4

1.3.2. Accumulation in the system 8

1.3.3. Generation in a system 11

1.3.4. Balance equation 15

1.4. Fluxes and flux densities 20

1.4.1. Energy fluxes 20

1.4.2. Mass fluxes 20

1.4.3. Flux densities 20

1.5. Operating states 25

1.5.1. Steady state 25

1.5.2. Transient state 25

1.6. Transfer area 28

1.6.1. What does the transfer area represent? 28

1.6.2. Illustration: transfer area in a heat exchanger 28

1.6.3. Illustration: transfer area inferred from a technical drawing 30

1.7. Driving potential difference 31

1.7.1. Heat transfer potential difference 32

1.7.2. Mass transfer potential difference 34

1.8. Exercises and solutions 38

1.9. Reading: seawater desallS/