内燃机工程2024，Vol.45Issue(5)：1-10,10.DOI:10.13949/j.cnki.nrjgc.2024.05.001
金属丝网强化余热回收烟气换热器的试验与数值研究
Experimental and Numerical Research on Metal Wire Mesh Enhanced Waste Heat Recovery Exhaust Heat Exchanger
摘要
Abstract
In order to explore the feasibility and performance of metal wire mesh reinforcement elements in waste heat recovery exhaust heat exchangers,experimental and numerical studies on the flow and heat transfer performance of channels embedded with metal wire mesh were conducted.Experimental research was conducted on channels embedded with metal wire mesh with different porosities.Simulation calculations and flow field analysis were conducted based on FLUENT,and the influence of wire mesh height on flow and heat transfer performance was analyzed.The results show that compared to traditional flat fins,the comprehensive performance index of the channel after embedding the metal wire mesh is improved by a maximum of 58% .The comprehensive performance first increases and then decreases with the increase of porosity,with 0.945 being the optimal porosity.At the same time,using a metal wire mesh that is consistent with the height of the flow channel can achieve the best comprehensive performance.Under the same pressure loss,the metal wire mesh can achieve better comprehensive performance by uniform fluid temperature and breaking the boundary layer compared to flat fins by increasing heat transfer area,which proves the feasibility of using the metal wire mesh as a strengthening element for exhaust heat exchangers.关键词
余热回收/烟气换热器/金属丝网强化结构Key words
waste heat recovery/exhaust heat exchanger/wire mesh reinforced structure分类
能源科技引用本文复制引用
舒歌群,黄炎梅,田华,王轩,张洪飞,丁元勋..金属丝网强化余热回收烟气换热器的试验与数值研究[J].内燃机工程,2024,45(5):1-10,10.基金项目
国家重点研发计划项目(2022YFE0100100)National Key Research and Development Program of China(2022YFE0100100) （2022YFE0100100）
