在之前的一篇论文中，作者给出了实验数据，表明翅片间距对板翅管式换热器的传热和摩擦性能的影响。在之前的研究中测试的九个线圈中的每一个在几何上都是相同的，但翅片间距除外，其在0到20.6翅片/英寸之间变化。本文描述了该早期研究的继续结果。给出了六个线圈的实验结果，这些线圈的几何结构与之前测试的线圈相同。气流方向上的管排数从1到6不等。引用:ASHRAE交易，第81卷，第一部分，新泽西州大西洋城

In an earlier paper this author presented experimental data showing, the effect of fin spacing on the heat transfer and friction performance of plate fin-and-tube heat exchangers. Each of the nine coils tested in that previous study were geometrically identical with the exception of fin pitch which was varied in steps from 0 to 20.6 fins/in.This paper describes the results of a continuation of that earlier study. Experimental results are given for six coils geometrically identical and identical to the coils tested earlier. The number of tube rows in the direction of air flow varied from 1 to 6.