Some issues of energy efficiency of heat generators based on controlled cavitation processes

: The article discusses some energy and thermophysical issues and aspects of the development of cavitation heat generators in the context of general trends in the development of energy in general. A brief analysis of the development of alternative, renewable and alternative energy sources and heat in the world and the CIS is given. A brief description of some literary sources with the practical application of the phenomenon of cavitation is presented. Analyzed some data of the initial experiments of controlled cavitation from the point of view of hydrodynamics and heat transfer. The configuration of the cavitation heat generator and the experimental setup are also presented. Ways to control the artificially created cavitation effect presented in this work, which allow to obtain rather high parameters of direct conversion of electrical energy to drive the pump into thermal energy for heating water. Some assumptions and hypotheses on the physical mechanisms of reproduction of this effect are analyzed. summary of preserving the structure of the article introduction/ problem statement/ goals/ history, research methods, results /discussion, conclusion). Abstract: The computational (numerical) diameter is used to completely solve the problem of approximate differentiation of a function given inexact information in the form of an arbitrary finite set of trigonometric Fourier coefficients. [100-200 words]