Technical Physics Letters
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- 2023
- 2022
Influence of location of submerged impact microjets on convective heat transfer during cooling of a heat-stressed surface by water and dielectric liquid
Kuznetsov V. V.
1, Shamirzaev A. S.
1, Mordovskoy A. S.1
1Kutateladze Institute of Thermophysics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
Email: vladkuz@itp.nsc.ru
Heat transfer during cooling of a heat-stressed surface in a small-sized channel by an annular and distributed array of flooded impact microjets of water and dielectric liquid Novec 7100 has been experimentally studied. The experimental setup is a copper block cooled by an array of microjets from nozzles with a diameter of 174, 327 μm and located at a distance of 1 mm from the surface. It has been established that the use of localized arrays of microjets makes it possible to obtain effective cooling of a heat-stressed surface with pumping energy comparable to energy costs for distributed microjets. Keywords: convective heat transfer, impact microjet, water, dielectric liquid.
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