The book "Design of thermal networks" by Nikolayev is an indispensable work for specialists in the field of thermal power engineering, engineers and students studying this important discipline. In today's world, where energy efficiency and sustainable development issues are becoming more and more relevant, this edition offers a deep immersion in the design of thermal networks, covering both theoretical foundations and practical aspects. The author, Nikolay Nikolaev, is an experienced engineer and teacher who has been engaged in the design and optimization of thermal systems for many years. His approach to the presentation of the material is clear and accessible, which makes the book useful for both professionals and novice professionals. Nikolaev skillfully combines scientific knowledge with practical experience, which allows the reader not only to understand the theory, but also to see how it is applied in real conditions. The book explores key aspects of thermal grid design, including equipment selection, heat loss calculation, and systems optimization techniques. The reader will be able to learn about modern technologies that improve the efficiency of thermal networks, as well as about new materials used in the construction and operation of such systems. Special attention is paid to the issues of ecology and energy saving, which makes this book especially relevant in the light of modern challenges. "Design of thermal networks" will be of interest not only to engineers and specialists in the field of thermal power engineering, but also to students of technical universities, graduate students and everyone who is interested in the design and operation of energy systems. The book will be a useful guide for those who want to deepen their knowledge in the field and gain the practical skills necessary for a successful career. The topics raised in the book cover a wide range of issues: from the basics of thermodynamics and hydraulics to modern methods of automation and monitoring of thermal networks. Nikolay Nikolaev emphasizes the importance of an integrated approach to design, which includes not only technical, but also economic aspects. This makes the book especially valuable for those who seek to create efficient and sustainable energy solutions. The author's style is distinguished by clarity and logical presentation, which allows the reader to easily assimilate complex concepts. Nikolaev uses many examples and illustrations, which makes the material more clear and understandable. His previous works have also received recognition in the professional environment, and this book will not be an exception. If you are looking for information on the design of thermal networks, the "Design of thermal networks" Nikolaev - this is what you need. Readers interested in topics such as "energy efficiency", "engineering systems design" or "thermal energy" will find many useful ideas and solutions in this book. Do not miss the opportunity to enrich your knowledge and skills by immersing yourself in the world of designing thermal networks together with Nikolai Nikolaev. This book will be your reliable assistant in professional activities and will help you become an expert in the field of thermal energy.