This paper presents an alternative approach for the selection of the most suitable turbulence promoter for the intensification of heat transfer in tubular heat exchangers. The approach uses the thermal and hydraulic lengths that are determined based on the two main design objectives in a heat exchanger, the heat duty and the pressure drop. Exchanger dimension in the form of plots of the exchanger length are produced to identify the device that results in the smaller equipment size within the constraints imposed by the pressure drop. The length plots are produced for various types of turbulence promoters under fixed design specifications such as heat duty, pressure drop, mass flow rate and tube diameter. The results indicate that from a set of 25 different types of turbulence promoters studied, those that exhibit the largest heat transfer enhancement with the lowest pressure drop are the V-cut twisted tape, the square-cut twisted tape, and the straight tape with center wings. The benefits of the use of heat transfer enhancement on the stream that controls heat transfer on a practical heat exchanger design is analysed on a case study.

本文提出了另一种方法，用于选择最合适的湍流促进剂，以增强管状热交换器中的传热。该方法使用的热力和水力长度是基于热交换器中的两个主要设计目标确定的，即热负荷和压降。产生以交换器长度的曲线形式的交换器尺寸，以识别在压降所施加的约束范围内导致较小设备尺寸的装置。在固定设计规格下，例如热负荷，压降，质量流率和管径，为各种类型的湍流促进器绘制了长度图。结果表明，从一组研究的25种不同类型的湍流促进剂中，表现出最大的传热增强和最低的压降的是V形双绞线，方型双绞线和带中心翼的直形带。在案例研究中，分析了在实际的热交换器设计中在流上使用传热增强来控制传热的好处。