Аннотация
The relevance of this study is explained by the growing interest in increasing heat transfer by the development of high-performance thermal systems.Increasing the thermal characteristics of heat-exchanger systems is necessary for the efficient use of an energy source.The purpose of this study is to review the existing methods of heat-transfer intensification and examine the mathematical model of such an increase in efficiency when using petal turbulators.This study is based on a high-quality, reliable combination of proven theoretical methods (analysis, synthesis, concreti-zation, generalization, modelling), and empirical methods.It is the introduction of turbulators into the flow channel that is one of the best methods of increasing passive heat exchange through such advantages as ease of manufacture and operation in combination with low operating and production costs.This study contains both passive and active methods of heat-exchange intensification that have been extensively investigated over the past decade.For this purpose, the newest studies of mainly authors from other countries were used, their detailed analysis was conducted and the results were summed up.In addition, a mathematical model of increasing the thermal efficiency of convective heating surfaces in a bundle of smooth pipes using petal turbulators was investigated, the results of which were tested on an experimental installation.The paper may interest a circle of readers interested in the problem of improving the thermal characteristics of heat exchangers, including researchers, teachers and students of higher educational institutions in the field of heat-power engineering.