Publication de 4 numéros par an
ISSN Imprimer: 2169-2785
ISSN En ligne: 2167-857X
Indexed in
HEAT TRANSFER IN SUPERCRITICAL FLUIDS: THE CASE OF HIGH-POWER HEAT RELEASE
RÉSUMÉ
Non-stationary heat transfer in supercritical fluids over short periods of time and at small spatial scales has been studied experimentally. The aim of this study was to clarify the characteristic features of the heat conduction mechanism under significant heat loads. For this purpose, the controlled pulse heating of a fast-response wire probe method was used. The characteristic heating time was a few milliseconds, and the heat flux density through the probe surface was increased up to 20 MW/m2. For all substances studied, the threshold decrease in the heat transfer intensity was revealed in the course of crossing the vicinity of the critical temperature along the isobar. This effect was more pronounced when the pressure value (p) was closer to the critical pressure (pc). The effect was observed over a wide range of reduced pressures up to p/pc = 3. The final solution to the problem of reconciling our result with peaks in the thermophysical properties, which are known from stationary experiments in the near-critical region, has not been found thus far.
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Rutin S. B., Igolnikov A. A., Skripov P. V., Title High-Power Heat Release in Supercritical Water: Insight into the Heat Transfer Deterioration Problem, Journal of Engineering Thermophysics, 29, 1, 2020. Crossref
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Rutin S. B., Skripov P. V., Igolnikov A. A., Non-stationary heat transfer beyond diffusion spinodal of a solution, THE 2ND INTERNATIONAL CONFERENCE ON PHYSICAL INSTRUMENTATION AND ADVANCED MATERIALS 2019, 2314, 2020. Crossref
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Skripov Pavel V., Yampol'skiy Aleksandr D., Rutin Sergey B., High-Power Heat Transfer in Supercritical Fluids, in Handbook of Research on Advancements in Supercritical Fluids Applications for Sustainable Energy Systems, 2021. Crossref
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Skripov P. V., Rutin S. B., Features of Supercritical Heat Transfer at Short Times and Small Sizes, International Journal of Thermophysics, 42, 7, 2021. Crossref
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Povolotskiy I. I., Volosnikov D. V., Skripov P. V., Heat Conduction of Superheated Mixtures: Relationship with Excess Volume, Journal of Engineering Thermophysics, 31, 1, 2022. Crossref
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Rutin Sergey, Skripov Pavel, Heat Transfer in Supercritical Fluids: Reconciling the Results of Pulse and Stationary Experiments, High Temperature, 59, 2-6, 2021. Crossref
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Rutin S. B., Igolnikov A. A., Skripov P. V., Heat conduction in supercritical fluids under non-ideal conditions: In memory of Dmitry Yu. Ivanov, THE VIII INTERNATIONAL YOUNG RESEARCHERS’ CONFERENCE – PHYSICS, TECHNOLOGY, INNOVATIONS (PTI-2021), 2466, 2022. Crossref
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Rutin S B, Skripov P V, Heat transfer under powerful heat release in supercritical-pressure liquids, Journal of Physics: Conference Series, 1675, 1, 2020. Crossref
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Abdulagatov I. M., Skripov P. V., Thermodynamic and Transport Properties of Supercritical Fluids. Part 2: Review of Transport Properties, Russian Journal of Physical Chemistry B, 15, 7, 2021. Crossref