Subcooled boiling in narrow channels with different sizes

ZHAO Nan; ZHANG Wang; YANG Lixin

doi:10.11949/j.issn.0438-1157.20160641

您当前的位置：

首页 >

文章列表页 >

Subcooled boiling in narrow channels with different sizes

更新时间：2025-12-10

- Subcooled boiling in narrow channels with different sizes
- CIESC Journal Issue S1, Pages: 47-56(2016)
- 作者机构：
  
  1. 北京交通大学机械与电子控制工程学院热能工程研究所,北京,100044
  2. 微细尺度流动与相变传热北京市重点实验室,北京,100044
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20160641
  CLC： K124
- Online First：31 August 2016，
  
  Published：31 August 2016
- 稿件说明：
移动端阅览
ZHAO Nan, ZHANG Wang, YANG Lixin. Subcooled boiling in narrow channels with different sizes[J]. CIESC Journal, 2016, (S1): 47-56.
DOI：

ZHAO Nan, ZHANG Wang, YANG Lixin. Subcooled boiling in narrow channels with different sizes[J]. CIESC Journal, 2016, (S1): 47-56. DOI： 10.11949/j.issn.0438-1157.20160641.

摘要

以去离子水为实验工质，在窄缝宽度δ=3、4 mm，质量流速G=143、300 kg·m-2·s-1，主流过冷度ΔTsub=17、25℃，热通量q=1～20 W·cm-2的参数范围内，对常压下竖直窄缝通道内向上流动过冷沸腾的换热规律进行了实验研究。对不同宽度窄缝通道内的同一区域过冷沸腾气泡演变过程进行了可视化实验分析，发现窄缝宽度因素对过冷流动沸腾的流动换热特性和壁面核化特性影响显著，其中包括沸腾起始点ONB，压降ΔP，传热系数h，汽化核心密度Na，气泡脱离直径Dd，气泡脱离频率f等。

Abstract

In present paper

the heat transfer characteristics of subcooled flow boiling in vertical rectangular narrow channels of different size at atmospheric pressure were investigated experimentally by using deionized water as working fluid

under the working conditions that width δ from 3 mm to 4 mm

mass flux G=143 & 300 kg·m-2·s-1

inlet subcooling ΔTsub=17 &25℃

heat flux q from 1 W·cm-2 to 20 W·cm-2. The visualization experiments were conducted to study the characteristics of bubble nucleation on the heating wall in the same area

then obvious channel size effects were found out

including effects on onset of boiling

heat transfer coefficient

active nucleation site density

bubble departure diameter and bubble departure frequency

etc.

关键词

Keywords

references

Views

169

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Generation and evolution of bubbles in channels of bipolar plates of alkaline water electrolyzers for producing hydrogen

CFD-DEM simulation of effects of gas density on pressurized fluidization

Modeling method of depressurization separation process of the mixture of high-pressure polyethylene and supercritical ethylene

Numerical and visualization study on dynamic behavior of bubbles in anti-acceleration double tangent arc channel

Water-lubricated drag reduction and pressure drop model modification for heavy oil pipeline

Related Author

ZOU Jiaqing

ZHANG Zhaoyu

ZHANG Jianguo

ZHANG Boyu

LIU Dingsheng

MAO Qing

WANG Ting

LI Jianjun

Related Institution

School of Chemical Engineering, Dalian University of Technology

Liaoning Fine Chemical Industry Technology Development Co., Ltd.

China Nuclear Industry Zhongyuan Construction Co., Ltd.

Department of Chemical Engineering, Tsinghua University

College of Chemical &Biological Engineering, Zhejiang University

⁰