Donatello Annaratone Knihy

This book is a generalist textbook; it is designed for anybody interested in heat transmission, including scholars, designers and students. Two criteria constitute the foundation of Annaratone’s books, including the present one. The first one consists of indispensable scientific rigor without theoretical exasperation. The inclusion in the book of some theoretical studies, even if admirable for their scientific rigor, would have strengthened the scientific foundation of this publication, yet without providing the reader with further applicable know-how. The second criterion is to deliver practical solution to operational problems. This criterion is fulfilled through equations based on scientific rigor, as well as a series of approximated equations, leading to convenient and practically acceptable solutions, and through diagrams and tables. When a practical case is close to a well defined theoretical solution, corrective factors are shown to offer simple and correct solutions to the problem.

The complexities of fluid motion in heat exchangers and tube banks are explored, highlighting the challenges in calculating heat transfer and temperature variations. This comprehensive review features 70 design and verification tables, providing valuable resources for understanding and applying these principles in practical scenarios.

This book presents a new and direct computational method for transient heat transfer. The approach uses the well-known dimensionless Biot number and a second dimensionless number introduced by the author. The methodology allows for a transient heat transfer calculations without using finite difference programs. The book presents many examples and various tables demonstrating the potential of this new methodology. Many diagrams illustrate the physical phenomena.

The content of this book originates from 35 years of teaching “steam generators” to graduate students at the Politecnico of Milan, Milan, Italy, and from 45 years of professional activity in this area – rst in industry and then as founder of a design and consulting company. Beforediscussingthecontentofthetextbook, Iwouldliketopresenttherationale for the title. Boilers are machines consisting of steam-generating tubes only, that is, of internal and external tubes where water is transformed into saturated steam. Steam generators – or, simply, generators – indicate machines equipped with one or more of the following components: superheaters, reheaters, economizers, and air heaters – besides the steam-generating tubes that make up the boiler. Finally, those machines with tubes, where instead of water, a diathermic uid ows inside, are also called boilers, for their construction is similar to that of the latter. The above notwithstanding, the term “boiler” is used even when hot water or superheated water is produced instead of steam. Large systems designed to produce electricity have all components indicated above in addition to the boiler. In medium size systems, some of these components are always present, whereas in small ones a regenerator is frequently and approp- ately included. It is therefore justi ed to use “steam generators” as title, because it best matches the actual makeup of these systems.

Pressure vessels are ubiquitous in various industrial sectors, serving as essential components in factories worldwide. They are integral to critical industries such as nuclear, oil, petrochemical, and chemical sectors. International symposia regularly address issues related to pressure vessel verification, and there has been a dedicated ISO committee for design standards for many years. Additionally, the EU has a technical committee focused on this area, and all industrialized nations have established codes for pressure vessel design. However, while these codes may specify regulations for component thickness, they often do not cover all the challenges faced by designers. Some regulations, particularly in Italy, can be perplexing, as seen in the ISPESL regulations related to pressure vessels. Verifying the resistance of a pressure vessel is complex; what may seem like simple structural forms can be challenging to analyze, especially when applying modern verification criteria such as elastoplasticity and self-limiting stresses. Despite significant interest and efforts in this field, many issues remain inadequately studied, and there is a lack of consensus among scholars and regulatory bodies across different countries. Furthermore, economic factors and ongoing technical advancements continually introduce new challenges, including the need for innovative designs and minimizing component thickness.