EXPERIMENTAL STUDY ON LOCAL SUBCOOLED FLOW BOILING HEAT TRANSFER IN A VERTICAL MINI-GAP CHANNEL

被引：0

作者：

Li, Jun-ye ^{[1
,2
]}

Feng, Zhao-zan ^{[3
]}

Coyle, Carolyn ^{[4
]}

McKrell, Thomas J. ^{[4
]}

Buongiorno, Jacopo ^{[4
]}

Zhou, Kan ^{[1
,2
]}

Li, Wei ^{[1
]}

机构：

[1] Zhejiang Univ, Dept Energy Engn, Hangzhou, Zhejiang, Peoples R China

[2] Zhejiang Univ, Collaborat Innovat Ctr Adv Aeroengine, Dept Energy Engn, Hangzhou, Zhejiang, Peoples R China

[3] CRRC Zhuzhou Inst Co Ltd, Zhuzhou, Hunan, Peoples R China

[4] MIT, Dept Nucl Sci & Engn, 77 Massachusetts Ave, Cambridge, MA 02139 USA

来源：

PROCEEDINGS OF THE ASME 14TH INTERNATIONAL CONFERENCE ON NANOCHANNELS, MICROCHANNELS, AND MINICHANNELS, 2016 | 2016年

基金：

美国国家科学基金会;

关键词：

MICROCHANNELS; SURFACES;

D O I：

暂无

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

An experimental study of subcooled flow boiling in a high aspect -ratio, one-sided heating rectangular mini-gap channel was conducted using deionized water. The local heat transfer coefficient, onset of nucleate boiling, and flow pattern of subcooled boiling were investigated. The influence of heat flux and mass flux were studied with the aid of a high-speed camera. The results show that the flow pattern was mainly isolated bubbly flow when the narrow microchannel was placed vertically. The bubbles generated at lower mass fluxes were larger and did not easily depart, forming elongated bubbly flow and flowing upstream. The thin film evaporation mechanism dominated the entire test section due to the elongated bubbles and transient local dryout as well as rewet. The local heat transfer coefficient near the exit of the test section was larger.

引用

页数：8

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