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This book is based on a course in process heat transfer that I have taught for many years. The course has been taken by seniors and first-year graduate students who have completed an introductory course in engineering heat transfer. Although this background is assumed, nearly all students need some review before proceeding to more advanced material. For this reason, and also to make the book self-contained, the first three chapters provide a review of essential material normally covered in an introductory heat transfer course.
Furthermore, the book is intended for use by practicing engineers as well as university students, and it has been written with the aim of facilitating self-study. Unlike some books in this field, no attempt is made herein to cover the entire panoply of heat transfer equipment. Instead, the book focuses on the types of equipment most widely used in the chemical process industries, namely, shell-and-tube heat exchangers (including condensers and reboilers), air-cooled heat exchangers and double-pipe (hairpin) heat exchangers. Within the confines of a single volume, this approach allows an in-depth treatment of the material that is most relevant from an industrial perspective, and provides students with the detailed knowledge needed for engineering practice.
This approach is also consistent with the time available in a one-semester course. Design of double-pipe exchangers is presented in Chapter 4. Chapters 5–7 comprise a unit dealing with shell-and-tube exchangers in operations involving single-phase fluids. Design of shell-and-tube exchangers is covered in Chapter 5 using the Simplified Delaware method for shell-side calculations. For pedagogical reasons, more sophisticated methods for performing shell-side heat-transfer and pressure-drop calculations are presented separately in Chapter 6 (full Delaware method) and Chapter 7 (Stream Analysis method).
Heat exchanger networks are covered in Chapter 8. I normally present this topic at this point in the course to provide a change of pace. However, Chapter 8 is essentially self-contained and can, therefore, be covered at any time. Phase-change operations are covered in Chapters 9–11. Chapter 9 presents the basics of boiling heat transfer and two-phase flow. The latter is encountered in both Chapter 10, which deals with the design of reboilers, and Chapter 11, which covers condensation and condenser design.Design of air-cooled heat exchangers is presented in Chapter 12.
The material in this chapter is essentially self-contained and, hence, it can be covered at any time. Since the primary goal of both the book and the course is to provide students with the knowledge and skills needed for modern industrial practice, computer applications play an integral role, and the book is intended for use with one or more commercial software packages. HEXTRAN (SimSci-Esscor), HTRI Xchanger Suite (Heat Transfer Research, Inc.) and the HTFS Suite (Aspen Technology, Inc.) are used in the book, along with HX-Net (Aspen Technology, Inc.) for pinch calculations. HEXTRAN affords the most complete coverage of topics, as it handles all types of heat exchangers and also performs pinch calculations for design of heat exchanger networks.
It does not perform mechanical design calculations for shell-and-tube exchangers, however, nor does it generate detailed tube layouts or setting plans. Furthermore, the methodology used by HEXTRAN is based on publicly available technology and is generally less refined than that of the other software packages. The HTRI and HTFS packages use proprietary methods developed by their respective research organizations, and are similar in their level of refinement. HTFS Suite handles all types of heat exchangers; it also performs mechanical design calculations and develops detailed tube layouts and setting plans for shell-and-tube exchangers.
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