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Heat transfer peculiarities and crisis phenomena development in spray cooling using various types of nozzles. / Vladyko, I.; Miskiv, N.; Pavlenko, K. и др.
в: International Communications in Heat and Mass Transfer, Том 159, 108145, 12.2024.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Heat transfer peculiarities and crisis phenomena development in spray cooling using various types of nozzles
AU - Vladyko, I.
AU - Miskiv, N.
AU - Pavlenko, K.
AU - Chernyavskiy, A.
AU - Surtaev, A.
N1 - The work was supported by the Russian Science Foundation (Grant No. 22-19-00581).
PY - 2024/12
Y1 - 2024/12
N2 - Spray cooling is one of the most effective methods for two-phase cooling but the mechanism of heat transfer and crisis phenomena development remains partially elusive due to the diverse range of phenomena observed during droplet impingement, boiling and dry spots formation in liquid film. This study focuses on spray cooling of subcooled water of a silicon surface using both pressure nozzle and atomizer at different liquid flow rates and nozzle-to-surface distances. Experiments show that for different nozzle types, the optimal distance for maximizing heat transfer is noticeable less than the distance where the spray cone fully covers the heated area. In order to achieve the highest critical heat flux (CHF), it is essential to select the distance that minimizes local temperature maximum. The temperature field non-uniformity in spray cooling depends on the nozzle-to-surface distance, spray flow parameters, and heat transfer mechanism. It's revealed that the development of intensive boiling in the liquid film changes the heat transfer curve slope and significantly reduces cooling non-uniformity. CHF values of 13.2 and 10.2 MW/m2 are attained for pressure nozzle (Q = 24.2 mL/s) and atomizer (Q = 6.6 mL/s), respectively.
AB - Spray cooling is one of the most effective methods for two-phase cooling but the mechanism of heat transfer and crisis phenomena development remains partially elusive due to the diverse range of phenomena observed during droplet impingement, boiling and dry spots formation in liquid film. This study focuses on spray cooling of subcooled water of a silicon surface using both pressure nozzle and atomizer at different liquid flow rates and nozzle-to-surface distances. Experiments show that for different nozzle types, the optimal distance for maximizing heat transfer is noticeable less than the distance where the spray cone fully covers the heated area. In order to achieve the highest critical heat flux (CHF), it is essential to select the distance that minimizes local temperature maximum. The temperature field non-uniformity in spray cooling depends on the nozzle-to-surface distance, spray flow parameters, and heat transfer mechanism. It's revealed that the development of intensive boiling in the liquid film changes the heat transfer curve slope and significantly reduces cooling non-uniformity. CHF values of 13.2 and 10.2 MW/m2 are attained for pressure nozzle (Q = 24.2 mL/s) and atomizer (Q = 6.6 mL/s), respectively.
KW - Critical heat flux
KW - Heat transfer
KW - Infrared thermography
KW - Spray cooling
KW - Subcooled liquid
UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85205726851&origin=inward&txGid=77e0cb00a4a5696f85d02d90acc7652f
UR - https://www.mendeley.com/catalogue/88aa39a2-5084-326a-9d6b-936b3aeb329c/
U2 - 10.1016/j.icheatmasstransfer.2024.108145
DO - 10.1016/j.icheatmasstransfer.2024.108145
M3 - Article
VL - 159
JO - International Communications in Heat and Mass Transfer
JF - International Communications in Heat and Mass Transfer
SN - 0735-1933
M1 - 108145
ER -
ID: 60753640