本文研究了一组用于提高热气管内对流换热系数的弯板插入件的性能，并对其相对性能进行了评价。通过使用性能评估标准（PEC）对相关性能进行比较，PEC用于确定给定插入件相对于光滑管的性能改进。使用的PEC基于在固定压降约束或恒定泵送功率约束下，固定几何形状的热负荷增加。 给出了两种约束条件下插入宽度、螺距和雷诺数的影响。给出了两种弯曲凸耳嵌件配置的新数据，并应用相同的PEC确定其相对性能。PEC比较表明，在3000到30000的试验范围内，两种插入件的对流换热系数的改善强烈依赖于雷诺数。在恒定压降约束下，两种类型的插入物仅在较低雷诺数下比光滑管都有改善。 在恒定的泵送功率约束下，发现了更大的改进，并且适用于更大范围的雷诺数。单位:双引文:研讨会，ASHRAE交易，1988年，第94卷，pt。2、渥太华

The performance of a group of bent-strip inserts used for enhancement of convective heat transfer coefficients in tubes carrying hot gases is studied and an evaluation of relative performance is made.The relative performances are compared by use of performance evaluation criteria (PEC) developed to determine the performance improvement of a given insert over that of a smooth tube. The PEC used were based on increase in heat duty for fixed geometry under either a fixed pressure drop constraint or a constant pumping power constraint. The effects of insert width, pitch and Reynolds number are presented for both constraints.New data are given for two configurations of a bent-tab insert and the same PEC are applied to determine their relative performance.The PEC comparisons show that improvements in convective heat transfer coefficients both types of inserts are strongly dependent on Reynolds number over the test range of 3000 to 30,000. Under the constant pressure drop constraint, both types of inserts showed improvements over a smooth tube only at lower Reynolds numbers. Under the constant pumping power constraint, larger improvements were found and for a wider range of Reynolds numbers.Units: Dual