本工作继续研究整体式内翅片管的传热和压降性能，旨在提高用于高性能紧凑型热交换器的光滑管的传热性能。之前的一篇论文描述了用于在湍流中加热水的整体内翅片管的性能。本文介绍了康涅狄格州纽敦诺兰达金属工业公司法国管道分部以Forge Fin（TM）的名义制造的相同管道在湍流中加热空气的性能数据。采用了18种不同的内翅片铜管，外表面光滑，5种为直翅片，13种为螺旋翅片。对一根商用光滑铜管进行了对比测试。管尺寸见表1，横截面如图1所示。为了便于讨论，将螺旋翅片管分为低螺旋翅片管，翅片高度/内径比小于0。 05并以大于0.065的比率进入高螺旋。引用:ASHRAE交易，第81卷，第一部分，新泽西州大西洋城

This work continues the study of heat transfer and pressure drop performance of integral inner fin tubes, designed to enhance the heat transfer performance of smooth tubes for use in high performance compact heat exchangers. A previous paper described the performance of integral inner fin tubes for heating water in turbulent flow. In this paper, performance data for heating air in turbulent flow are presented for the same tubes, manufactured by the French Tube Division, Noranda Metal Industries, Newtown, Connecticut, under the name Forge-Fin(TM). Eighteen different inner fin copper tubes with smooth outside surfaces were employed, 5 with straight fins and 13 with spiral fins. A commercial smooth copper tube was tested for comparison. Tube dimensions are given in Table 1, and the cross-sections are shown in Fig. 1. For ease of discussion, the spiral fin tubes were divided into low spiral with the fin height/inside diameter ratio less than 0.05 and into high spiral with the ratio greater than 0.065.