The book "Calculation of the maximum performance of the boiler and heat exchanger" by B. In. Mamaeva is an indispensable work for everyone who is interested in heat engineering, energy and heating systems design. In today's world, where resource efficiency and process optimization are becoming key factors in various industries, this publication offers in-depth analysis and practical recommendations for calculating the performance of boilers and heat exchangers. In the book, Mamaev shares his knowledge and experience based on many years of practice in the design and operation of thermal equipment .. It examines the basic principles of operation of boiler plants and heat exchangers, and also offers readers techniques to achieve maximum performance of these systems. The author focuses on the importance of accurate calculations and their impact on the economic efficiency of enterprises, which makes the book relevant for engineers, designers and students of technical universities. The topics covered in the book cover a wide range of issues, ranging from the thermodynamic foundations of boilers to modern methods of optimizing heat exchange processes. Mamaev not only explains the theoretical aspects, but also offers practical examples, which makes the material accessible and understandable even for those who are just starting their way in this area. Readers will be able to learn how to choose the right equipment, calculate its parameters and ensure the reliable operation of heating and hot water systems. The book will be useful not only to professional engineers, but also to students of technical specialties, as well as to all who are interested in improving their qualifications in the field of heat engineering. It will be an excellent addition to training courses in energy and heat engineering, and can also be used as a reference material for practitioners. The style of the author is distinguished by clarity and logical presentation, which makes it easy to assimilate even the most complex topics. In. In. Mamaev is the author of several other significant works in the field of heat engineering, and his experience is reflected in each section of the book. Readers familiar with his previous work will appreciate the consistency and depth of the analysis, and beginners will be able to appreciate the accessibility and practical orientation of the presentation. “Calculating the maximum performance of the boiler and heat exchanger” is not just a training manual, but a real find for everyone who seeks to improve their knowledge and skills in the field of heat engineering . The book inspires the search for new solutions and process optimization, which makes it an indispensable tool for improving the efficiency of work in the energy sector. If you are looking for literature on the design of boilers, heat exchangers or just want to deepen your knowledge in the field of heat engineering, this publication will be a real find for you. Do not miss the opportunity to get acquainted with the work in . In. Mamaeva and discover new horizons in the world of thermal engineering technologies .