The book "plate heat exchangers in district heating systems" by B. M. Copco is a deep and comprehensive study dedicated to the most important element of modern heat supply systems - plate heat exchangers. This publication will be especially interesting for specialists in the field of energy, engineers, students of specialized universities and anyone who seeks to understand the intricacies of the design and operation of heating systems. Author, B. M. Copco, known for his scientific work and practical research in the field of heat exchange and heat engineering. His writing style is clear and accessible, which allows the reader to easily assimilate even the most complex concepts. Copco not only shares theoretical knowledge, but also reinforces it with practical examples, making his book an indispensable reference for professionals. The book focuses on plate heat exchangers devices that play a key role in district heating systems. Copco examines in detail their designs, operating principles and advantages compared to traditional tubular heat exchangers. Readers will learn about different types of heat exchangers, their application in different conditions and how to choose the right device for a particular system. One of the main topics of the book is the efficiency of resource use .. In the face of rising energy prices and the need to reduce the carbon footprint, the optimization of heat supply systems is becoming especially urgent. Copco focuses on how plate heat exchangers can significantly improve system efficiency, reduce heating costs, and improve overall reliability. The book also touches on the design and installation of these devices, making it useful not only for theorists, but also for practitioners. Readers will be able to find recommendations for the selection of materials, calculations and installation, which will help to avoid common errors and improve the reliability of systems. For students and young professionals interested in heat engineering, this edition will be an excellent teaching aid . It will help not only to master the theory, but also to prepare for the practical tasks that they will face in their career. Copco uses clear language and illustrative examples, which makes the material available even to those who are just beginning their journey in this area. The book "plate heat exchangers in district heating systems" will be interesting to those who are engaged in research activities. It presents current data and the results of recent research, which allows readers to be aware of current trends and developments in the field of heat exchange. If you are looking for literature on heat exchangers, heating systems, energy efficiency, then this publication will be a real find for you It will not only expand your knowledge, but also inspire new ideas and solutions in your professional activities. Finally, book B. M. Copco is not just a scientific publication, but a practical guide that will help you better understand the principles of plate heat exchangers and their role in modern heat supply systems. Do not miss the opportunity to enrich your knowledge and skills in this important area!