Open AccessGradient heat flux measurement in study of heat transfer during subcooled water boiling at sphere
Author(s) -
С. З. Сапожников,
V. Yu. Mityakov,
Valeria Subbotinа
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1565/1/012017
Subject(s) - subcooling , heat flux , nucleate boiling , boiling , thermodynamics , materials science , heat transfer , heat transfer coefficient , critical heat flux , leidenfrost effect , flux (metallurgy) , mechanics , physics , metallurgy
The new method for study of film boiling of subcooled water is proposed. Applying the heterogeneous gradient heat flux sensors (HGHFS) allows first the experimental determination of heat flux and heat transfer coefficient (HTC) when subcooled water is boiling at the spherical surface preheated up to 673 K. Maximum of the heat flux was fixed when the sphere contacted with subcooled water (ΔT = 80 K). Incessant and synchronous measurement of heat flux, surface temperature, and observation of vapor film were implemented. Traditional boiling curve was also obtained. Functionality of HGHFS under the complicated conditions of experiment was confirmed.