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Information × Registration Number 0217U006026, 0116U006054 , R & D reports Title Creation and investigation of composite nanofluids for energy purposes popup.stage_title Head Bondarenko B., Registration Date 27-01-2017 Organization Institute of Gas of National Academy of Science of Ukraine popup.description2 Research was devoted to the study of emergency cooling of heat exchange overheated surfaces using the created nanofluids. By simultaneous recording of changes in the basic heat transfer parameters while water boiling in time it was studied the possibility of an emergency cooling of a superheated heat transfer surface by nanofluid in case of boiling crisis. Two nanofluids obtained from natural mixture of aluminium silicates and titanium dioxide were tested. It was revealed that the introducing of a minor portion of nanofluids in boiling coolant (distilled water) that is in a state of a film boiling (theater > 500°C), allows to drastically reduce the temperature of the heat transfer surface to the level of 130-150°C, which corresponds to the transition to a safe bubble boiling regime with no reduction in heat flux. At the same time, significant is the fact that this mode persists long enough at a specific heat load, which exceeds the value of the critical heat flux for water and when theater = 125-130°C. It allows you to immediately prevent an potentional accident (heater burnout and damage of the heat exchanger) and to ensure the smooth operation of the equipment. Product Description popup.authors Бондаренко Б.І. Гудков М.М. Комиш Д.В. Морару В.Н. Святенко О.М. Сидоренко С.В. Снігур О.В. Ховавко О.І. popup.nrat_date 2020-04-02 Close