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Perry's Chemical Engineers' Handbook
The discipline of chemical engineering has continued to contribute in numerous and important ways to worldwide industrial progress over the past decade. Significant strides have been made in process and equipment design methods. This progress has been due, in part, to factors such as increased computer utilization and availability of better materials of construction. The focus on the increased value of energy and the need for improved waste management have also affected design decisions. Basically, however, good chemical engineering practice is still founded on the sound application of the two aspects of empiricism and theory. And in both of these aspects a number of contributions have been made since publication of the fifth edition. Thus, each of the 25 sections of the fifth edition has been revised and updated, and for some areas (such as economics, distillation, extraction, and absorption) sections have been completely rewrit- ten. Two new sections have been added to incorporate the emerging technologies of bioengi- neering and waste management.
The method of handling units in the Handbook was changed. As most engineers are aware, SI units are utilized in much of the world while U.S. customary units are still used primarily in the United States (although there has been a definite move in the United States toward greater application of the SI). To accommodate the different users, the Handbook has been written to the extent possible using both conventions. Tables and figures which were revised from earlier editions were not redrafted because it simply was not practical to do so. New figures and tables are generally presented in SI and, in some instances, in both sets of units. In all cases, conversion factors are provided with tables and figures to convert to the alternative convention. Numbers which appear in the text are given in both SI and U.S. customary units, and dimensional constants which appear in a number of empirical equations are also usually specified in both unit sets. In general, the editors believe the Handbook will be usable by persons working with either units convention.
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