Experimental data of thermo-hydraulic measurements of double corrugated tubes

A double corrugated tube geometry for improved heat transfer performance inspired by vascular heat exchangers found in fish such as the tuna and the opah is presented. The geometry features a cross section that varies continuously in the flow direction while maintaining a constant hydraulic diameter, which gives enhanced heat transfer at a relatively low increase in pressure drop. Five ellipse-based tubes with varying corrugation severity and period that emulate blood vessels of fish were produced in an aluminium alloy using additive manufacturing technology. Thermal performance of the novel tube design was experimentally investigated in a counter flow tube-in-shell heat exchanger in a range of Reynold numbers from 1000 to 2500.
Table 1 presents the geometrical parameters of the examined tubes. The double corrugated tubes varies in aspect ratio, AR and corrugation period, p, hydraulic diameter, Dh, is maintained constant at any point of the flow channel. However, the derived surface equations only approximates the surface of the double corrugated tubes. The inaccuracy, caused by imperfection of the equations as well as the limitations of CAD software and manufacturing process, is less than 4 %, thus all the examined tubes are considered to have constant Dh, Inner and outer surface area, As,i and As,o, respectively, length, l, and the wall thickness, δ, are given in Table 1. The geometry of the examined double corrugated tubes is fully described in Research paper.
The data presented in Tables 2 - 8 present full data set obtained during the experimental study – inlet and outlet temperatures as well as mass flow rates for heat transfer and pressure measurements and measured pressure drop. Surface roughness data are presented in Figure 1 as well as separately uploaded as a .tif file.

本文提出了一种受鱼类如金枪鱼和鳐鱼体内血管式换热器启发的双层波纹管几何形状，旨在提升传热性能。该几何形状的特点在于其横截面在流动方向上连续变化，同时保持恒定的水力直径，从而在压力降相对较低的情况下实现了传热性能的提升。通过使用增材制造技术，在铝合金中制造了五种基于椭圆的、具有不同波纹严重程度和周期的管子，以模拟鱼类的血管。新型管设计的传热性能在一系列雷诺数从1000到2500的逆流管壳式换热器中进行了实验研究。表1展示了所考察管子的几何参数。双层波纹管的横截面积比（AR）和波纹周期（p）各不相同，但水力直径（Dh）在流动通道的任何一点都保持恒定。然而，推导出的表面方程仅近似地描述了双层波纹管的表面。由于方程的不完善以及CAD软件和制造工艺的限制，这种误差小于4%，因此所有考察的管子都被认为具有恒定的Dh、内表面积（As,i）和外表面积（As,o），以及长度（l）和壁厚（δ），这些参数均在表1中给出。所考察双层波纹管的几何形状在研究论文中得到了完整描述。表2至表8中呈现的数据是实验研究期间获得的完整数据集——入口和出口温度、热传递和压力测量的质量流量以及测量的压力降。表面粗糙度数据如图1所示，并作为单独的.tif文件上传。