Technical Physics Letters
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- 2024
- 2023
- 2022
Effect of micro-sized vapor bubbles on heat transfer at different heater temperature rise rate
Levin A.A.
1, Khan P.V.
1
1Melentiev Energy Systems Institute of Siberian Branch of the Russian Academy of Sciences, Irkutsk, Russia
Email: Lirt@mail.ru, polinakhan@gmail.com
The paper presents the results of an experimental study of the dynamics of boiling of a subcooled liquid flow at heater temperature rise rates from 250 K/s to 19 000 K/s and subcooling level from 23 to 103 K. The effect of temperature conditions on the relative fraction of bubbles smaller than 50 μm is studied. A significant contribution of microbubbles at deep subcooling of the liquid and high rate of temperature rise of the heater surface was revealed. Keywords: nucleate boiling, microbubbles, non-steady heating.
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