基于ZnO 纳米流体与螺旋纽带协同强化的深井空冷器传热特性研究#br#

金属矿山 ›› 2025, Vol. 54 ›› Issue (10): 234-241.

基于ZnO 纳米流体与螺旋纽带协同强化的深井空冷器传热特性研究#br#

朱梦锴^1,2　张昌建^1,2　李　刚³　罗景辉^1,2　王　硕^1,2　平天祎^1,2　王　森^1,2

1. 河北工程大学能源与环境工程学院,河北邯郸 056038;2. 河北省暖通空调工程技术创新中心,河北邯郸 056038;
3. 金属矿山开采安全与灾害防治全国重点实验室,安徽马鞍山 243000

出版日期:2025-10-15 发布日期:2025-11-10
通讯作者: 张昌建(1964—),男,正高级工程师。
作者简介:朱梦锴(2002—),男,硕士研究生。
基金资助:
“十四五”国家重点研发计划项目(编号:2022YFC2904104);中央引导地方科技发展资金项目(编号:236Z4310G);邯郸市科学技术研
究与发展计划项目(编号:23211018120)。

Research on Heat Transfer Characteristics of Deep Well Air Coolers Based on the Synergistic Enhancement of ZnO Nanofluids and Spiral Ties#br#

ZHU Mengkai^1,2　ZHANG Changjian^1,2　LI Gang³　LUO Jinghui^1,2　WANG Shuo^1,2　 PING Tianyi^1,2　WANG Sen^1,2

1. School of Energy and Environmental Engineering,Hebei University of Engineering,Handan 056038,China;
2. Hebei Provincial Engineering Technology Research Center for HVAC,Handan 056038,China;
3. State Key Laboratory of Safety and Disaster Prevention for Metal Mines,Maanshan 243000,China

Online:2025-10-15 Published:2025-11-10

摘要/Abstract

摘要： 针对高温金属矿山井下空气冷却器存在的体积庞大、易结垢和传热效率低等问题,提出采用纳米流体
与旋转纽带协同强化传热技术,系统探究了复合强化传热机制对换热管性能的提升效果。通过试验研究了8 种不同
浓度ZnO 纳米流体在内置螺旋纽带翅片管中的传热特性,分析了纳米粒子浓度对传热系数、努塞尔数(Nu)、摩擦系
数及综合热性能因子(PEC)的影响。研究表明:纳米粒子浓度与传热性能之间存在显著的阈值关系,当ZnO 纳米流
体浓度φ≤0. 5%时,纳米粒子通过微对流效应和热导率提升可有效强化传热,其最优传热系数较纯水提升19. 39%;
而超过该临界浓度后,粒子团聚导致的黏度剧增成为主导因素,反而削弱传热效率。螺旋纽带产生的二次流可有效
抑制纳米粒子沉积,这种协同作用使得在φ =0. 5%浓度获得最佳综合热性能。研究成果为深井空冷器传热效率的改
善提供了参考,未来研究可重点关注纳米流体稳定性,实现更优的传热强化。

关键词: 纳米流体　螺旋纽带　协同强化传热　综合热性能因子

Abstract: Aiming at the problems of large volume,easy fouling and low heat transfer efficiency of underground air coolers
in high temperature metal mines,the synergistic heat transfer enhancement technology of nanofluids and rotating bonds is proposed,
and the effect of composite heat transfer enhancement mechanism on the performance of heat exchange tubes is systematically
explored. The heat transfer characteristics of eight different concentrations of ZnO nanofluids in finned tubes with built-in
spiral ties were studied experimentally. The effects of nanoparticle concentration on heat transfer coefficient,Nusselt number
(Nu),friction coefficient and comprehensive thermal performance factor (PEC) were analyzed. The results show that there is a
significant threshold relationship between the concentration of nanoparticles and the heat transfer performance. When the concentration
of ZnO nanofluids is φ≤0. 5%,nanoparticles can effectively enhance heat transfer through micro-convection effect
and thermal conductivity enhancement,and its optimal heat transfer coefficient is 19. 39% higher than that of pure water. After
exceeding the critical concentration,the sharp increase in viscosity caused by particle agglomeration becomes the dominant factor,
which weakens the heat transfer efficiency. The secondary flow generated by the spiral ties can effectively inhibit the deposition
of nanoparticles,and this synergistic effect enables the best comprehensive thermal performance at a concentration of φ =
0. 5%. The research results provide a reference for improving the heat transfer efficiency of deep well air coolers. Future research
can focus on the stability of nanofluids and achieve better heat transfer enhancement.

Key words: nanofluids, spiral ties, synergistically enhanced heat transfer, comprehensive thermal performance factor

中图分类号:

TD724

朱梦锴, 　张昌建, 　李　刚　罗景辉, 　王　硕, 　平天祎, 　王　森, . 基于ZnO 纳米流体与螺旋纽带协同强化的深井空冷器传热特性研究#br#[J]. 金属矿山, 2025, 54(10): 234-241.

ZHU Mengkai, 　ZHANG Changjian, 　LI Gang　LUO Jinghui, 　WANG Shuo, 　 PING Tianyi, 　WANG Sen, . Research on Heat Transfer Characteristics of Deep Well Air Coolers Based on the Synergistic Enhancement of ZnO Nanofluids and Spiral Ties#br#[J]. Metal Mine, 2025, 54(10): 234-241.

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