【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.更多还原

【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.更多还原