Effects of super-hydrophilicity and orientation of heater surface on bubble behavior and the critical heat flux in pool boiling

被引：4

作者：

Choi, Hundong ^{[1
]}

Aziz, Faraz ^{[2
]}

Shin, Younghoon ^{[4
]}

Hwang, Woonbong ^{[4
]}

Lee, Kwon-Yeong ^{[1
]}

Jo, Daeseong ^{[2
,3
]}

机构：

[1] Handong Global Univ, Dept Mech & Control Engn, Pohang 37554, South Korea

[2] Kyungpook Natl Univ, Grad Sch, Dept Mech Engn, 80 Daehak ro, Daegu 702701, South Korea

[3] Kyungpook Natl Univ, Sch Mech Engn, 80 Daehak ro, Daegu 41566, South Korea

[4] Pohang Univ Sci & Technol POSTECH, Dept Mech Engn, Pohang 37676, South Korea

来源：

ANNALS OF NUCLEAR ENERGY | 2023年 / 186卷

基金：

新加坡国家研究基金会;

关键词：

Super-hydrophilicity; Bubble behavior; Critical heat flux; Boiling heat transfer coefficient; Pool boiling; CARBON NANOTUBE COATINGS; WATER;

D O I：

10.1016/j.anucene.2023.109762

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

This study investigated the boiling heat transfer characteristics of a super-hydrophilic surface with de-ionized water at different orientations. Pool boiling experiments were conducted at inclination angles of 45 degrees, 90 degrees, and 135 degrees by rotating the experimental apparatus. The experimental results were analyzed to investigate the influence of inclination angle and hydrophilicity of the surface on the boiling heat transfer characteristics. Parameters such as the maximum and minimum vapor thicknesses, bubble wavelength, bubble velocity, BHTC (Boiling Heat Transfer Coefficient) and CHF (Critical Heat Flux) were measured during the experiment. An enhancement in values of the parameters of the bubble dynamics was observed during the boiling experiment using the super-hydrophilic PCB (Printed Circuit Board) heater, indicating improved heat transfer during the experiment. The CHF of the super-hydrophilic PCB heater was enhanced by a maximum of 28% at an inclination angle of 45 degrees; enhancement reduced as the inclination angle increased.

引用

页数：10

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