摘要
Abstract
Porous materials,characterized by their high specific surface area and excellent permeability,have emerged as ideal candidates for enhancing heat transfer.This paper is centered around the application of porous materials within heat exchangers.It comprehensively integrates the current research status of four distinct types of porous materials with varying structures.A systematic analysis is then carried out to elucidate the influence exerted by the structural characteristics of porous materials on both the friction factor and the heat transfer coefficient.Moreover,the heat transfer efficiencies of commonly-used porous materials are compared,and optimization strategies grounded in porosity,material type,and structural features are put forward.Overall,the research into the application of diverse porous materials in heat exchangers is steadily advancing.Nevertheless,under identical heat transfer conditions,the heat transfer efficiencies of different structures,as well as the effects of the resultant pressure drop on the fluid,remain ambiguous.Simultaneously,the correlation between thermal radiation and heat transfer efficiency at high temperatures still awaits in-depth exploration.It is feasible to modify the design of heat exchangers,conduct a cross-comparison of the heat transfer coefficients and friction of different porous materials,compile the optimal material selections for different heat exchangers,and chart a course for enhancing the heat transfer efficiency of heat exchangers in the future.关键词
多孔材料/强化换热/传热系数/摩擦系数/孔隙率Key words
porous material/enhanced heat transfer/heat transfer coefficient/friction factor/porosity分类
化学化工
