超临界压力下纳米流体竖直管内流动换热

doi:10.11949/j.issn.0438-1157.20140859

化工学报 ›› 2015, Vol. 66 ›› Issue (4): 1265-1271.DOI: 10.11949/j.issn.0438-1157.20140859

超临界压力下纳米流体竖直管内流动换热

张巍¹, 黄丹², 吴晓雨², 宋亚超², 陈松泽², 李蔚³, 朱海涛⁴

1. 核动力运行研究所, 湖北武汉 430223;
2. 浙江大学能源工程学系先进航空发动机协同创新中心, 浙江杭州 310027;
3. 浙江大学能源工程学系, 浙江杭州 310027;
4. 青岛科技大学材料工程学系, 山东青岛 266402

收稿日期:2014-06-09 修回日期:2015-01-05 出版日期:2015-04-05 发布日期:2015-04-05
通讯作者: 李蔚
作者简介:李蔚(1965-),男,教授。
基金资助:
国家自然科学基金项目(51172117);浙江省自然科学基金项目(Z13E060001);国家支撑计划项目(2012BAA10B01)。

Convection heat transfer of Fe₃O₄-kerosene in a vertical tube at supercritical pressures

ZHANG Wei¹, HUANG Dan², WU Xiaoyu², SONG Yachao², CHEN Songze², LI Wei³, ZHU Haitao⁴

1. Research Institute of Nuclear Power Operation, Wuhan 430223, Hubei, China;
2. Co-Innovation Center for Advanced Aero-Engine, Department of Energy Engineering, Zhejiang University, Hangzhou 310027, Zhejiang, China;
3. Department of Energy Engineering, Zhejiang University, Hangzhou 310027, Zhejiang, China;
4. School of Materials Science and Technology, Qingdao University of Science and Technology, Qingdao 266042, Shandong, China

Received:2014-06-09 Revised:2015-01-05 Online:2015-04-05 Published:2015-04-05
Supported by:
supported by the National Natural Science Foundation of China (51172117), the National Science Foundation of Zhejiang Province (Z13E060001) and the National Science and Technology Support Program (2012BAA10B01).

摘要/Abstract

摘要：

对超临界压力下Fe₃O₄-煤油纳米流体竖直管内的换热特性进行了实验研究,分析了不同压力、质量流量、热通量和纳米颗粒浓度对超临界压力下纳米流体换热特性的影响。超临界压力下,纳米流体在竖直管内沿管长呈现不同的换热规律。流体质量流量的提高或者工作压力的提高均会使纳米流体在竖直管内流动换热效果变好。而热通量的增大或纳米颗粒的添加对超临界压力下纳米流体的换热具有恶化效果。最后给出了纳米流体在超临界压力下的传热关联式,其计算值和实验值吻合良好。

关键词: 超临界流体, Fe₃O₄-煤油, 纳米颗粒, 换热特性, 传热关联式

Abstract:

An experiment on the heat transfer characteristics of Fe₃O₄-kerosene flowing in a vertical upward tube at supercritical pressure was conducted. In the experiments, the effects of such factors as mass flux, heat flux, pressure and particle content were investigated. There were different heat transfer mechanisms along the tube. Increasing flow rate or working pressure could enhance heat transfer performance, but higher heat flux led to poorer heat transfer performance. Besides, addition of solid particles deteriorated heat transfer performance through modification of inner wall surface. Based on the experimental data, a correlation for predicting heat transfer of Fe₃O₄-kerosene at supercritical pressure was established and showed good agreement with experimental data.

Key words: supercritical pressure, Fe₃O₄-kerosene, nanoparticles, heat transfer characteristic, heat transfer correlation

中图分类号:

TK16

张巍, 黄丹, 吴晓雨, 宋亚超, 陈松泽, 李蔚, 朱海涛. 超临界压力下纳米流体竖直管内流动换热[J]. 化工学报, 2015, 66(4): 1265-1271.

ZHANG Wei, HUANG Dan, WU Xiaoyu, SONG Yachao, CHEN Songze, LI Wei, ZHU Haitao. Convection heat transfer of Fe₃O₄-kerosene in a vertical tube at supercritical pressures[J]. CIESC Journal, 2015, 66(4): 1265-1271.

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超临界压力下纳米流体竖直管内流动换热

Convection heat transfer of Fe₃O₄-kerosene in a vertical tube at supercritical pressures

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超临界压力下纳米流体竖直管内流动换热

Convection heat transfer of Fe3O4-kerosene in a vertical tube at supercritical pressures

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Convection heat transfer of Fe₃O₄-kerosene in a vertical tube at supercritical pressures