In this study, a novel metal-foam baffle cut shell and tube heat exchanger for waste heat recovery system is presented to recover heat in the exhaust gas. A 3D numerical model is established to investigate the thermal-hydraulic performance of the metal-foam baffle heat exchangers. First, the non-baffle shell and tube heat exchangers and traditional metal baffle shell and tube heat exchangers are simulated as reference for comparison. Then, the velocity distribution, temperature distribution and pressure distribution of three different types of heat exchangers are analyzed. Afterwards, the influences of exhaust gas mass flow rate and baffle thickness on pressure drop and heat transfer performance of metal-foam baffle heat exchangers and traditional ones are evaluated. The results show that, compared with traditional metal baffle heat exchangers, all metal-foam baffle exchangers show better comprehensive performance, and the area goodness factor of metal-foam baffle heat exchangers increases by 151.89%−583.62%. Among the given heat exchangers, the metal-foam baffle heat exchanger with selected metal-foam sample (MF 40.9132) is the optimum one for waste heat recovery.

在这项研究中，提出了一种用于废热回收系统的新型金属泡沫折流板壳式管壳式热交换器，以回收废气中的热量。建立了一个3D数值模型来研究金属泡沫挡板换热器的热工水力性能。首先，对非折流板壳式换热器与传统的金属折流板壳式换热器进行了仿真比较，以供参考。然后，分析了三种不同类型的热交换器的速度分布，温度分布和压力分布。然后，评估了排气质量流量和折流板厚度对金属泡沫折流板换热器和传统换热器的压降和传热性能的影响。结果表明，与传统的金属折流板换热器相比，所有金属泡沫折流板换热器表现出更好的综合性能，金属泡沫折流板换热器的面积系数提高151.89％−583.62％。在给定的热交换器中，带有金属泡沫样品（MF 40.9132）的金属泡沫折流板热交换器是回收废热的最佳选择。