涡流发生器及扭带组合强化换热特性研究

李海珠; 陈雪梅; 李强

doi:10.19912/j.0254-0096.tynxb.2023-1961

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太阳能学报 ›› 2025, Vol. 46 ›› Issue (3) : 486-493. DOI: 10.19912/j.0254-0096.tynxb.2023-1961

涡流发生器及扭带组合强化换热特性研究

李海珠, 陈雪梅, 李强

作者信息 +

RESEARCH ON ENHANCED HEAT TRANSFER CHARACTERISTICS BY VORTEX GENERATOR AND TWISTED BELT COMBINATION

Li Haizhu, Chen Xuemei, Li Qiang

Author information +

文章历史 +

摘要

该文提出太阳能换热器用的多类型涡流发生器组合的新型复合强化换热结构,并通过数值分析方法,研究多类型涡流发生器组合中的尺寸参数、布置参数和布置方式等变量对整体换热效率的影响,在雷诺数为5000~25000范围内获得了最优参数。研究结果表明：当涡流发生器采用偏心交错布置时,综合换热效率随攻角的增大与布置间距的减小而增大。在新型复合强化换热结构的攻角为75°、扭带的扭率为4、布置间距为1.5D、布置方式为偏心交错布置时,其综合传热性能与光滑通道相比可提高98%~136%。

Abstract

In this paper, a novel composite enhanced heat transfer structure is proposed for solar heat exchangers, incorporating multi-type vortex generators. Numerical analysis is conducted to examine the influence of size parameters, layout parameters, and layout methods on overall heat transfer efficiency within the Reynolds number range of 5000-25000. The results reveal that adopting an eccentric staggered arrangement for the vortex generator enhances heat transfer efficiency by increasing the angle of attack and reducing spacing. By utilizing a new composite enhanced heat transfer structure with an angle of attack set at 75°, torsion rate at 4 for the torsion belt, layout spacing set at 1.5D, and employing an eccentric staggered layout mode, comprehensive heat transfer performance can be improved by 98%-136% compared to that achieved in a smooth channel.

导出引用

李海珠, 陈雪梅, 李强. 涡流发生器及扭带组合强化换热特性研究[J]. 太阳能学报. 2025, 46(3): 486-493 https://doi.org/10.19912/j.0254-0096.tynxb.2023-1961

Li Haizhu, Chen Xuemei, Li Qiang. RESEARCH ON ENHANCED HEAT TRANSFER CHARACTERISTICS BY VORTEX GENERATOR AND TWISTED BELT COMBINATION[J]. Acta Energiae Solaris Sinica. 2025, 46(3): 486-493 https://doi.org/10.19912/j.0254-0096.tynxb.2023-1961

中图分类号： TK124

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