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Information × Registration Number 0222U001254, 0119U101861 , R & D reports Title Improvement of the method of synthesis of stable nanofluids for energy, in particular, atomic popup.stage_title Head Bondarenko Boris I., Доктор технічних наук Registration Date 26-01-2022 Organization The Gas Institute of the National Academy of Sciences of Ukraine popup.description2 The work was devoted to improving the method of synthesis of a new class of coolants - nanofluids (HP). As part of the project, a study was conducted to study the influence of the nature of the dispersed phase of nanoparticles on the thermophysical parameters of nanofluids. It is established that the material nature of nanoparticles has a significant effect on the value of the critical heat flux (qcr) of nanofluid. For nanofluids based on carbon and aluminosilicates, an almost twofold increase in the value of qcr compared to the base liquid (distilled water) was found. At the same time, existing theories predict an increase in qcr for various nanofluids by only 15-20%. To determine the mechanism of anomalous growth of thermophysical characteristics of nanofluids, the influence of the degree of disaggregation of aluminosilicate nanoparticles on the value of the critical heat flux was studied. The state of disaggregation is confirmed by the curves of the distribution of the number and mass of parts by their effective size in the absence and in the presence of a dispersant. It is shown that the introduction of only 0.05% of the dispersant into the dispersion of attapulgite causes a twofold increase in the value of the critical heat flux. Accordingly, particle disaggregation (suspension stabilization) has a positive effect on the thermophysical properties of nanofluids, indicating the role of Brownian motion in the heat transfer mechanism. Technological regulations for the preparation of stable nanofluids based on aluminosilicates and carbon nanomaterials have been developed. Ultrasonic and cavitation equipment for development of small test batches of nanofluids has been mastered. Product Description popup.authors popup.nrat_date 2022-03-09 Close