Abstract The article presents data on commercially available devices designed to obtain excess thermal energy obtained through water cavitation. On the one hand, bearing in mind the publication in 2024 in a reputable international journal of an article by researchers from Taiwan on the emergence of new elements after water cavitation, and, on the other hand, having information on the physical processes in cavitation bubbles obtained in explaining the phenomena of single-bubble sonoluminescence and the nature of ball lightning, and assuming that excess energy is extracted by cavitation bubbles from nuclei, recommendations are given to improve the efficiency of such devices
V. P. Torchigin (Mon,) studied this question.
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