Page 15 - Plant design and economics for chemical engineers

P R E F A C EXIII ‘-’

numbers ‘in an equation and solve for a final answer. The true value is found in
obtaining an understanding of the reasons why a given calculation method gives
a satisfactory result. This understanding gives the engineer the confidence and
ability necessary to proceed when new problems are encountered for which
there are no predetermined methods of solution. Thus, throughout the study of
plant design and economics, the engineer should always attempt to understand
the assumptions and theoretical factors involved in the various calculation
procedures and never fall into the habit of robot-like number plugging.
Because applied economics and plant design deal with practical applica-
tions of chemical engineering principles, a study of these subjects offers an ideal
way for tying together the entire field of chemical engineering. The final result
of a plant design may be expressed in dollars and cents, but this result can only
be achieved through the application of various theoretical principles combined
with industrial and practical knowledge. Both theory and practice are empha-
sized in this book, and aspects of all phases of chemical engineering are
included.
The authors are indebted to the many industrial firms and individuals who
have supplied information and comments on the material presented in this
edition. The authors also express their appreciation to the following reviewers
who have supplied constructive criticism and helpful suggestions on the presen-
tation for this edition: David C. Drown, University of Idaho; Leo J. Hirth,
Auburn University; Robert L. Kabel, Permsylvania State University; J. D.
Seader, University of Utah; and Arthur W. Westerberg, Carnegie Mellon
University. Acknowledgement is made of the contribution by Ronald E. West, -
Professor of Chemical Engineering at the University of Colorado, for the new
Chapter 4 in this edition covering computer-aided design.
Max S. Peters
Klaus D. Timmerhaus