This book is the English translation of our German publication, which appeared in
1994 with the title “W¨arme und Stoff¨ ubertragung” (2nd edition Berlin: Springer
Verlag 1996). The German version originated from lecture courses in heat and
mass transfer which we have held for many years at the Universities of Hannover
and Stuttgart, respectively. Our book is intended for students of mechanical
and chemical engineering at universities and engineering schools, but will also be
of use to students of other subjects such as electrical engineering, physics and
chemistry. Firstly our book should be used as a textbook alongside the lecture
course. Its intention is to make the student familiar with the fundamentals of
heat and mass transfer, and enable him to solve practical problems. On the other
hand we placed special emphasis on a systematic development of the theory of
heat and mass transfer and gave extensive discussions of the essential solution
methods for heat and mass transfer problems. Therefore the book will also serve
in the advanced training of practising engineers and scientists and as a reference
work for the solution of their tasks. The material is explained with the assistance
of a large number of calculated examples, and at the end of each chapter a series
of exercises is given. This should also make self study easier.
Many heat and mass transfer problems can be solved using the balance equations and the heat and mass transfer coefficients, without requiring too deep a
knowledge of the theory of heat and mass transfer. Such problems are dealt with
in the first chapter, which contains the basic concepts and fundamental laws of
heat and mass transfer. The student obtains an overview of the different modes
of heat and mass transfer, and learns at an early stage how to solve practical
problems and to design heat and mass transfer apparatus. This increases the motivation to study the theory more closely, which is the object of the subsequent
chapters.
In the second chapter we consider steady-state and transient heat conduction
and mass diffusion in quiescent media. The fundamental differential equations for
the calculation of temperature fields are derived here. We show how analytical
and numerical methods are used in the solution of practical cases. Alongside the
Laplace transformation and the classical method of separating the variables, we
have also presented an extensive discussion of finite difference methods which are
very important in practice. Many of the results found for heat conduction can be
transferred to the analogous process of mass diffusion. The mathematical solution
formulations are the same for both fields

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