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[1]李娟,朱章钰,安海燕,等.微通道截面形状对冷凝传热特性的影响[J].南京工业大学学报(自然科学版),2018,40(06):51-55.[doi:10.3969/j.issn.1671-7627.2018.06.008]
 LI Juan,ZHU Zhangyu,AN Haiyan,et al.Effects of cross-section shape on condensation heat transfer characteristics[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2018,40(06):51-55.[doi:10.3969/j.issn.1671-7627.2018.06.008]
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微通道截面形状对冷凝传热特性的影响()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
40
期数:
2018年06期
页码:
51-55
栏目:
出版日期:
2018-11-20

文章信息/Info

Title:
Effects of cross-section shape on condensation heat transfer characteristics
文章编号:
1671-7627(2018)06-0051-05
作者:
李娟朱章钰安海燕华洁
南京林业大学 机械电子工程学院,江苏 南京 210037
Author(s):
LI JuanZHU ZhangyuAN HaiyanHUA Jie
College of Mechanical and Electronic Engineering,Nanjing Forestry University,Nanjing 210037,China
关键词:
微通道 水蒸气 甲烷 冷凝传热 压降
Keywords:
microchannel water vapor methane condensation heat transfer pressure drop
分类号:
TK172
DOI:
10.3969/j.issn.1671-7627.2018.06.008
文献标志码:
A
摘要:
实验研究水蒸气在水力直径为1 mm的半圆形微通道内的冷凝传热特性,获得微通道冷凝传热系数随着质量流速的变化规律。运用计算流体力学(CFD)数值模拟方法,建立半圆形微通道物理模型,以实验数据验证数值方法的有效性。以甲烷作为相变介质,数值分析了气态甲烷在矩形、半圆形与三角形不同截面形状微通道内冷凝传热过程。结果表明:微通道的压降和传热系数随质量流速的增大而增大; 质量流速一定时,相比矩形和半圆形微通道,三角形微通道的压降和冷凝传热系数更大。
Abstract:
The condensation heat transfer characteristics of water vapor in rectangular,semi-circular and triangular microchannels with hydraulic diameter of 1 mm were investigated experimentally.The variation of the microchannel condensing heat transfer coefficient with mass flow rate was obtained.The microchannel model was established from computational fluid dynamics(CFD)numerical simulation,and the validity of the numerical results was verified with experimental data.The condensation heat transfer processes of gaseous methane in microchannels with rectangular,semi-circular and triangular cross-section were numerically analyzed using methane as the phase change medium.Results showed that the pressure drop and heat transfer coefficient of microchannels increased with the increase of the mass flow rate.Compared with the rectangular and semi-circular,the triangle microchannel had a higher pressure drop,and condensation heat transfer coefficient when the mass flow rate was kept constant.

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备注/Memo

备注/Memo:
收稿日期:2018-07-19
基金项目:国家自然科学基金(51506098); 江苏省高校自然科学基金(15KJB470007); 江苏省大学生创新创业训练计划(201710298051Z); 南京林业大学科研启动项目(GXL006)
作者简介:李娟(1987—),女,湖北洪湖人,讲师,主要研究方向为高效传热技术与设备,E-mail:juanlee1130@163.com.
引用本文:李娟,朱章钰,安海燕,等.微通道截面形状对冷凝传热特性的影响[J].南京工业大学学报(自然科学版),2018,40(6):51-55..
更新日期/Last Update: 2018-11-30