The study of heat exchange during the movement of fluid inside pipes and channels by Yu. In. Putilina is a fascinating and deep dive into the world of thermodynamics and hydrodynamics, which will become a reference book for students, graduate students and specialists in the field of heat exchange and thermal energy. In this work, the author examines in detail the processes occurring in liquids moving through pipelines and channels, which is a topical topic for many industries, including energy, chemistry and mechanical engineering. The book begins with the basics of thermodynamics and hydrodynamics, which allows the reader not only to refresh their knowledge, but also to get a clear idea of how heat transfer affects the efficiency of various systems. Putilin masterfully explains complex concepts, making them accessible to understanding. It uses visual examples and graphs that help visualize processes, which is especially useful for students and practicing engineers. The topics covered in the book cover a wide range of issues related to heat transfer: from theory to practical applications. The author pays special attention to the influence of various factors on the efficiency of heat exchange, such as flow rate, temperature and physical properties of the liquid. He also considers modern methods of calculation and modeling of heat exchange processes, which makes the book relevant in the light of the rapid development of technologies. This book will be interesting not only for students and graduate students, but also for professional engineers working in the field of design and operation of heat exchange systems. It will be a useful resource for those who are interested in optimizing processes and improving the efficiency of equipment. Specialists in energy, chemical technology or water supply will find in it many useful ideas and solutions. Style Y. In. Putilina is distinguished by clarity and logical presentation, which makes reading a book fascinating and informative. He skillfully combines theory with practical examples, which allows the reader not only to master the material, but also to apply it in real conditions. The author also shares his experience and observations, which gives the book special value. If you are looking for literature on heat transfer, then “Research on heat transfer when fluid moves inside pipes and channels” will be a real find for you. This book will not only expand your knowledge, but also help you become more competent in your field. It is ideal for those who want to deepen their knowledge in thermodynamics and hydrodynamics, as well as for those who seek to improve their professional skills. Do not miss the opportunity to get acquainted with the work of Y. In. Putilina and discover new horizons in the field of heat exchange. This book is your reliable assistant in the world of science and technology, which will help you understand the complex processes and apply the knowledge gained in practice.