In this paper, in order to improve the efficiency of waste heat utilization, based on the movement type and shape of the snake, snake bionic surfaces with different structures were designed, and CuO–H₂O nanofluids were used instead of traditional working fluids, and they were coupled together and applied to waste heat utilization equipment. The main work is to experimentally study the effects of nanofluids mass fraction (w = 0.1 wt%, 0.3 wt%, 0.5 wt%), amplitude of bionic channel structure (A = 1 mm, A = 2 mm, A = 3 mm), angular frequency of bionic channel structure (ω = 20 rad/s, ω = 25 rad/s, ω = 30 rad/s), phase shift of bionic channel structure (α = 0°, 90°, 180°), and Reynolds number (Re = 1,300–1800) on the flow and heat transfer characteristics of working fluid. It was found that the heat transfer capacity of nanofluids increases with nanofluids mass fraction, angular frequency, amplitude and phase shift. Finally, the comprehensive performance of the whole experimental system was studied, and it was found that the greater the angular frequency, amplitude and phase shift, the better the comprehensive performance of the heat exchanger.

中文翻译：

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仿生通道结构对余热利用设备影响的实验研究

本文为了提高余热利用效率，根据蛇的运动类型和形状，设计了不同结构的蛇仿生表面，并使用CuO-H ₂ O纳米流体代替传统的工作流体，并将它们耦合在一起应用于余热利用设备。主要工作是实验研究纳米流体质量分数（w  = 0.1 wt%, 0.3 wt%, 0.5 wt%）、仿生通道结构振幅（A  = 1 mm, A  = 2 mm, A  = 3 mm）的影响, 仿生通道结构的角频率 ( ω  = 20 rad/s, ω  = 25 rad/s, ω = 30 rad/s）、仿生通道结构的相移（α =  0°、90°、180°）和雷诺数（Re  = 1,300–1800）对工作流体的流动和传热特性的影响。发现纳米流体的传热能力随着纳米流体的质量分数、角频率、振幅和相移而增加。最后对整个实验系统的综合性能进行了研究，发现角频率、幅值和相移越大，换热器的综合性能越好。