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                             Foreword to the Second Edition







                       The techniques of process design continue to improve as  Chapter 12, “Compression Equipment,” has been gener-
                     the science of chemical engineering develops new and bet-  ally updated.
                     ter interpretations of fundamentals. Accordingly, this sec-  Chapter 13, “Compression Surge Drums,” presents sev-
                     ond edition presents additional, reliable design methods  eral new techniques, as well as additional detailed examples.
                     based on proven techniques and supported by pertinent   Chapter 14, “Mechanical Drivers,” has been updated to
                     data. Since the first edition, much progress has been made  inlcude the latest code and standards of the National Elec-
                     in standardizing and improving the design techniques for  trical Manufacturer’s Association and information on the
                     the hardware components that are used in designing    new energy efficient motors.
                     process equipment. This standardization has been incorpo-  Also, the new appendix provides an array of basic refer-
                     rated in this latest edition, as much as practically possible.  ence and conversion data.
                       The “heart” of proper process design is interpreting the  Although computers are now an increasingly valuable
                     process requirements into properly  arranged and  sized  tool for the process design engineer, it is beyond the scope
                     mechanical hardware expressed as (1) off-the-shelf mechan-  of these three volumes to incorporate the programming and
                     ical equipment (with appropriate electric drives and instru-  mathematical techniques required to convert the basic
                     mentation for control); (2) custom-designed vessels,  process design methods presented into computer programs.
                     controls, etc.; or (3) some combination of (1) and (2). The  Many useful computer programs now exist for process
                     unique process conditions must be attainable in, by, and  design, as well as optimization, and the process designer is
                     through the equipment. Therefore, it is essential that the  encouraged to develop his/her own or to become familiar
                     process designer carefully visualize physically and mathe-  with available commercial programs through several of the
                     matically just how the process will behave in the equipment  recognized firms specializing in design and simulation com-
                     and through the control schemes proposed.             puter software.
                       Although most of the chapters have been expanded to   The many aspects of process design are essential to the
                     include new material, some obsolete information has been  proper performance of the work of chemical engineers and
                     removed.                                              other engineers engaged in the process engineering design
                       Chapter 10, “Heat Transfer,” has been updated and now  details for chemical and petrochemical plants. Process
                     includes several important design techniques for difficult  design has developed by necessity into a unique section of
                     condensing situations and for the application of ther-  the scope of work for the broad spectrum of chemical engi-
                     mosiphon reboilers.                                   neering.
                       Chapter 11, “Refrigeration Systems,” has been improved
                     with additional data and new systems designs for light hydro-
                     carbon refrigeration.





























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