The book "Design and calculation of thermal network structures" by authors Anatoly Alexandrovich Lyamin and Alexander Alexandrovich Skvortsov is an indispensable work for everyone who is interested in the design and operation of thermal networks. This voluminous and detailed work will become a reference book for engineers, architects, students of technical universities and anyone who seeks to better understand the principles of heat engineering and heating systems design. In the book, the authors consider a wide range of issues related to the design and calculation of thermal network structures, ranging from the foundations of theory to practical aspects. They share their knowledge about the different types of heat networks, their design solutions and calculation methods, making the material accessible to understand even for those who are just beginning their journey in this field. It is important to note that the authors are not only theorists, but also practitioners, which gives the book special value. Their experience in real projects allows them to share relevant and proven methods that can be applied in practice. The book will be especially interesting for students and graduate students of technical specialties, as well as young professionals who are just starting their careers in the field of thermal grid design. It will also be useful to experienced engineers who want to update their knowledge and get acquainted with new approaches and technologies in this field. Readers who are passionate about energy efficiency and sustainable development will find many useful ideas and solutions in this publication. The topics raised in the book cover not only technical aspects of design, but also issues of ecology and energy efficiency. The authors emphasize the need to optimize heating networks to reduce energy losses and improve the overall efficiency of heating systems. This makes the book particularly relevant in light of the current challenges posed by climate change and the need to transition to sustainable energy sources. The style of the authors is distinguished by clarity and accessibility of presentation, which allows the reader to easily assimilate even the most complex concepts. They use many illustrations, diagrams and examples, which makes the material more clear and understandable. This approach allows not only to study the theory, but also to apply the knowledge gained in practice. Anatoly Aleksandrovich Lyamin and Alexander Alexandrovich Skvortsov are well-known specialists in the field of heat engineering and design, and their work has already proven itself on the market. Their previous publications are also popular among professionals and students, which indicates a high level of expertise of the authors. The book "Design and calculation of thermal networks" will be a logical continuation of their scientific and practical activities, offering readers relevant solutions and new ideas. If you are looking for information about the design of thermal networks, the calculation of structures, as well as modern approaches to energy efficiency, then this publication will be a real find for you. Don’t miss the opportunity to expand your knowledge and improve your skills in this important and sought-after area. The book “Design and calculation of thermal network structures” is not just a textbook, but a real encyclopedia of knowledge that will help you become an expert in the design of thermal systems.