整体式螺旋翅片管束结构参数对传热特性的影响

doi:10.12068/j.issn.1005-3026.2026.20240130

摘要/Abstract

摘要：

为研究结构参数对整体式螺旋翅片管束间传热特性的影响，设计并制作了13组不同结构参数的整体式螺旋翅片管束，搭建了1∶1管束传热特性实验台，借此开展管束传热特性实验研究.研究结果表明：在生产可调范围内，适当增大烟气流速、翅片高度、翅片间距和纵向管距，可以提升管束的气侧Nu；横向管距对管束的气侧Nu影响不显著.基于实验数据，提出了描述整体式螺旋翅片管束气侧Nu的关联式，为后续管束热工参数优化数值计算提供理论基础.

关键词: 余热锅炉, 省煤器, 整体式螺旋翅片管束, 传热特性

Abstract:

To investigate the influence of structural parameters on the heat transfer characteristics between integral spiral finned tube bundles， 13 groups of such tube bundles with varying structural parameters were designed and fabricated. A 1∶1 experimental bench for heat transfer characteristics was established to conduct experimental research on the heat transfer characteristics of these tube bundles. The findings indicate that the Nusselt number （Nu） on the gas side of the tube bundles improves with an increase in flue gas velocity， fin height， fin pitch， and longitudinal pitch within the production’s adjustable range. Conversely， the transverse pitch does not significantly affect the Nu on the gas side of the tube bundles. Based on the experimental data， a correlation equation describing the Nu on the gas side of the integral spiral finned tube bundles is proposed， providing a theoretical foundation for subsequent research on the optimization of numerical calculations of the thermal parameters of these tube bundles.

Key words: heat recovery steam generator, economizer, integral spiral finned tube bundle, heat transfer characteristic

中图分类号:

TK 223

张丹枫, 董辉, 赵亮. 整体式螺旋翅片管束结构参数对传热特性的影响[J]. 东北大学学报（自然科学版）, 2026, 47(1): 131-137.

Dan-feng ZHANG, Hui DONG, Liang ZHAO. Effect of Structural Parameters of Integral Spiral Finned Tube Bundles on Heat Transfer Characteristics[J]. Journal of Northeastern University(Natural Science), 2026, 47(1): 131-137.

图/表 11

图2 实验系统实物图（a）—左视图；（b）—主视图.

Fig.2 Physical diagram of experimental system

图3 整体式螺旋翅片管束结构示意图ST—横向管距； SL—纵向管距； di—管内径； do—管外径； δ1—翅尖厚度； δ2—翅根厚度； hf—翅片高度； pf—翅片间距.

Fig.3 Schematic diagram of integral spiral finned tube bundle structure

图4 气侧与水侧换热平衡

Fig.4 Heat transfer balance between flue gas side and water side

图5 翅片高度对管束气侧Nu的影响规律

Fig.5 Influence of fin height on Nu on gas side of tube bundles

图6 翅片间距对管束气侧Nu的影响规律

Fig.6 Influence of fin pitch on Nu on gas side of tube bundles

图7 横向管距对管束气侧Nu的影响规律

Fig.7 Influence of transverse pitch on Nu on gas side of tube bundles

图8 纵向管距对管束气侧Nu的影响规律

Fig.8 Influence of longitudinal pitch on Nu on gas side of tube bundles

图9 实验值与关联式计算值对比

Fig.9 Comparison of experimental values and calculated values by correlation equation

图10 实验值与关联式计算值相对误差直方图和正态分布曲线

Fig.10 Histogram and normal distribution curve of relative errors between experimental values and calculated values by correlation equation

1—离心风机； 2—天然气； 3—燃烧室； 4—均流孔板； 5—换热装置；

表1 整体式螺旋翅片管束结构参数 (finned tube bundles)

Table 1 Structural parameters of integral spiral

方案	翅片管参数/mm				管束布置参数/mm
方案	内径	外径	翅片间距	翅片高度	纵向管距	横向管距
1	32	38	5	12.8	104	89
2	32	38	11	12.8	104	89
3	32	38	14	12.8	104	89
4	32	38	8	12.8	104	89
5	32	38	8	7.0	104	89
6	32	38	8	10.0	104	89
7	32	38	8	16.0	104	89
8	32	38	8	12.8	104	59
9	32	38	8	12.8	104	74
10	32	38	8	12.8	104	104
11	32	38	8	12.8	59	89
12	32	38	8	12.8	74	89
13	32	38	8	12.8	89	89

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