The book "Approximate calculation of shroud-cut heat exchangers" by B. P. Orlova is an indispensable reference book for engineers, students and specialists in the field of heat exchange and heat engineering . In the conditions of modern production, where the efficiency and reliability of heat exchange systems play a key role, this publication becomes a real guide to the complex world of calculation and design of casing-tube heat exchangers. In his book, Orlov offers the reader a detailed analysis of the methods of calculating heat exchangers, which allows not only to understand the theoretical foundations, but also to apply them in practice. The author examines various aspects of design, including the choice of materials, the calculation of heat transfer and hydraulic resistance, as well as the optimization of structures to increase their efficiency. Each section of the book is filled with practical examples, which makes the material accessible and understandable even for those who are just starting their way in this area. The book will be especially useful for students of technical universities studying in specialties related to energy, mechanics and heat engineering. Practical engineers working in the field of design and operation of heat exchange equipment will also find in it a lot of useful information. In. P. Orlov creates a text that is easily perceived, so that readers can quickly learn complex concepts and apply them in their work. The topics raised in the book cover a wide range of issues, ranging from the basics of heat transfer to modern methods of calculation and optimization. Orlov focuses on the importance of accuracy of calculations and their impact on the overall efficiency of heat exchange systems. He also discusses current trends in heat transfer, including the use of new materials and technologies, which makes the book relevant in the context of modern design requirements. The author’s style is distinguished by clarity and logical presentation . Orlov masterfully combines theoretical knowledge with practical examples, which allows the reader not only to understand the material, but also to see its application in real life. This makes the book not just a training tool, but a real tool for professionals. In. P. Orlov is also known for his other work in the field of heat exchange and heat engineering, which confirms his status as an expert in this field. If you are looking for information about the calculations of heat exchangers, optimization of their work or just want to deepen your knowledge in the field of heat engineering, the book "Example calculation of casing-tube heat exchangers" will be a real find for you. It will not only expand your horizons, but also help you become more confident in your professional activities. Thus, this edition is not just a book, but a whole world of knowledge that opens up new opportunities for the reader. Do not miss the chance to take a step towards improving your skills and understanding the complex processes of heat exchange . “Approximate calculation of casing-tube heat exchangers” is your reliable assistant on the way to professional success in the field of heat engineering .