The book "Calculation of the helium liquefaction plant", written by a team of authors led by A. D. Kondratenko is a unique and valuable publication that will be especially interesting to those who are fond of physics, engineering and gas liquefaction technologies. This publication is a true guide to the complex processes involved in helium liquefaction and offers readers a thorough understanding of both the theoretical and practical aspects of the field. Helium liquefaction is not just a technical process, it is a real science that requires accurate calculations and deep knowledge of thermodynamics, physics and engineering. The book details various aspects of designing and calculating helium liquefaction plants, including equipment selection, heat flow calculation, and system efficiency analysis. The authors share their knowledge and experience, which makes the material available to both students and professionals working in this field. Who can like this book? First of all, it will be of interest to students of technical specialties, graduate students and young scientists who want to deepen their knowledge in the field of thermodynamics and engineering . It will also be useful to practicing engineers and specialists working in the field of gas liquefaction, cryogenic technology and related disciplines. The book can be an excellent addition to training courses and serve as a reference for research projects. The topics raised in the book cover a wide range of issues, ranging from the basics of thermodynamics to modern liquefaction technologies. The authors discuss not only theoretical aspects, but also practical applications, which makes the publication especially valuable for those who want to apply the acquired knowledge in real conditions. The book also addresses issues of ecology and sustainable development, which makes it relevant in light of the current challenges facing humanity. The style of the authors is clear and accessible, which allows the reader to easily assimilate complex concepts. They use many illustrations, graphs and examples from practice, which makes the material more visual and understandable. The team of authors includes experienced specialists who not only have theoretical knowledge, but also have practical experience in the field of helium liquefaction. If you are looking for books on engineering, thermodynamics or cryogenics, then "Calculation of the helium liquefaction plant" will be an excellent choice. This edition will not only expand your knowledge, but also inspire new ideas and projects. It can become a basis for further research and development, as well as a useful tool for solving practical problems. Thus, the Calculation of the Helium Liquefaction Installation is not just a book, but a whole world of knowledge that opens up to the reader. This publication must be in the library of everyone who is interested in modern technologies and strives for new discoveries in the field of science and technology. Do not miss the opportunity to immerse yourself in the fascinating world of helium liquefaction and discover new horizons in this exciting area!