旋流条件下螺旋弹性铜管振动强化传热性能分析

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振动与冲击 ›› 2024, Vol. 43 ›› Issue (19) : 1-9.

论文

旋流条件下螺旋弹性铜管振动强化传热性能分析

孙亚茹1，李德权2，季家东3，华子森2

作者信息 +

Vibration-enhanced heat transfer performance analysis of helical elasticcopper tube under swirl condition

SUN Yaru1, LI Dequan2, JI Jiadong3, HUA Zisen2

Author information +

文章历史 +

摘要

为了充分利用流体诱导螺旋弹性铜管(HECT)振动增强传热，以获得更高综合传热性能的HECT换热器装置，基于安装正向螺旋引流板的HECT换热器(HECT-FSB)和逆向螺旋引流板的HECT换热器(HECT-RSB)，采用双向-流固耦合法，研究了旋流条件下入口流速(Uin)对HECT振动强化传热性能的影响。研究表明：Uin在计算范围内增加，HECT的振幅增大、传热系数提高，HECT换热器的进出口压降增大、PEC值减小；HECT-RSB换热器的HECT振幅和传热系数、进出口压降明显高于HECT-FSB换热器。HECT-FSB换热器的PEC值高于HECT-RSB，振动强化传热性能更佳，在Uin为0.3 m/s时，高出了9.00%。HECT-RSB换热器的JF因子最大，综合传热性能最佳，与已发表文献中换热器相比，Uin在计算范围内JF因子平均提升了2.7%。该研究可为HECT换热器装置综合性能提升提供技术支撑。

Abstract

In order to make full use of fluid-induced helical elastic copper tube (HECT) vibration to enhance heat transfer and obtain higher comprehensive heat transfer performance of HECT heat exchanger device, the HECT heat exchanger with forward spiral baffle (HECT-FSB) and the HECT heat exchanger with reverse spiral baffle (HECT-RSB) were proposed. The two way-fluid structure coupling calculation method was adopted to study the effects of inlet velocity (Uin) on vibration-enhanced heat transfer and comprehensive heat transfer performance of HECT under swirling condition. The results show that with the increase of Uin, the amplitude and heat transfer coefficient of the HECT, and the pressure drop of the HECT heat exchanger all increase, while the PEC value decreases. The amplitude and heat transfer coefficient of the HECT, and the pressure drop of the HECT-RSB heat exchanger are significantly higher than those of the HECT-FSB heat exchanger. The PEC value of the HECT-FSB heat exchanger is higher than that of the HECT-RSB heat exchanger, and the vibration-enhanced heat transfer performance is better. When the Uin is 0.3 m/s, the PEC value of the HECT-FSB heat exchanger is 9.00% higher than that of the HECT-RSB heat exchanger. The HECT-RSB heat exchanger has the largest JF factor and the best comprehensive heat transfer performance. Compared with the heat exchanger in the published literature, the JF factor in the calculation range of Uin is increased by 2.7% on average. This research can provide technical support for improving the comprehensive performance of HECT heat exchanger device.

导出引用

孙亚茹1, 李德权2, 季家东3, 华子森2. 旋流条件下螺旋弹性铜管振动强化传热性能分析[J]. 振动与冲击, 2024, 43(19): 1-9

SUN Yaru1, LI Dequan2, JI Jiadong3, HUA Zisen2. Vibration-enhanced heat transfer performance analysis of helical elasticcopper tube under swirl condition[J]. Journal of Vibration and Shock, 2024, 43(19): 1-9

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