The book "Steam turbine K-300-240 KhTGZ", edited by Yuri Kosyak and with the participation of G. Z. It is a unique work that will be of interest not only to specialists in the field of energy, but also to everyone who seeks to better understand the principles of steam turbines and their role in modern energy systems. This publication is a true guide to the complex but fascinating world of steam technology, and it can become a reference book for engineers, students, and researchers. The book covers a wide range of topics related to the design, production and operation of steam turbines, in particular, the K-300-240 model, which is one of the most popular and popular in Russia. The authors consider in detail the design features, principles of operation and advantages of this model, as well as its application in various power plants. The reader will be able to learn about current trends in the field of energy, about how steam turbines adapt to new requirements related to environmental safety and efficiency. For students of technical specialties, as well as for young professionals just starting their way in the energy industry, the book will become a valuable source of knowledge. It will help to better understand not only the theoretical aspects of the operation of steam turbines, but also the practical nuances that may arise during their operation. Experienced engineers will also find in this publication a lot of useful information that will help them update their knowledge and get acquainted with new developments in this field. Topics raised in the book range from the fundamentals of thermodynamics to the reliability and safety of steam turbines. The authors pay special attention to energy efficiency issues, which makes the book relevant in light of the current challenges associated with climate change and the need to switch to more sustainable energy sources. Readers will be able to see how steam turbines can be integrated into combined power and heat generation systems, an important step towards a more rational use of resources. The style of writing of the authors is clear and accessible, which allows even complex technical aspects to be explained in simple and understandable language. This makes the book interesting for a wide audience, including those who do not have deep technical knowledge, but want to understand the basics of steam turbines. In addition, there are many illustrations and diagrams in the book that help to visualize the processes and constructions described. Yuri Kosyak, as an editor and one of the authors, is a well-known specialist in the field of energy, and his experience and knowledge make this book especially valuable. He is also the author and co-author of many other scientific and educational publications, which emphasizes his authority in this field. The book "Steam turbine K-300-240 KhTGZ" can be compared with other works on energy, such as "Power plants" or "Fundamentals of thermodynamics", but its uniqueness lies in a deep immersion in a specific model and its application. In conclusion, the K-300-240 HTZ steam turbine is not just a book about technology, it is a whole world opening doors to the future of energy. It will be of interest to both professionals and those who are just beginning their journey in this exciting field. If you are looking for a source of knowledge that will help you understand the intricacies of steam turbines and their importance for the energy industry, this publication will become your reliable companion.