Abstract

Effect of helical perforated twisted tape parameters like diameter ratio (d_R/D_I), relative pitch ratio (P_PT/L_T), perforation index (P_A/T_A) and Reynolds number(Re) on the thermal and hydrodynamic performance of heat exchanger circular tube experimentally analysed. Experimental data pertinent to air flow and heat transfer is generated and thermal hydrodynamic performance is determined for different sets of helical perforated twisted tape insert and flow parameters. The highest value of thermal hydrodynamic is observed at d_R/D_I of 0.65, P_PT/L_T of 0.086 and P_A/T_Aof 10%. The maximum value of the thermal hydrodynamic performance was found to be 2.12 for the range of parameters examined.

中文翻译：

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螺旋穿孔扭曲带参数对换热器圆管热力学和流体力学性能的影响

摘要

螺旋穿孔扭曲带参数如直径比（d _R / D _I），相对螺距比（P _PT / L _T），穿孔指数（P _A / T _A）和雷诺数（Re）对热力学和流体力学性能的影响换热器圆管的实验分析。产生与气流和热传递有关的实验数据，并针对不同组的螺旋穿孔扭曲带插入物和流动参数确定热流体力学性能。在d _R / D处观察到最高的热流体动力学值_I为0.65， P _PT / L _T为0.086， P _A / T _A为10％。对于所检查的参数范围，发现热流体动力学性能的最大值为2.12。