Review and Prospect of Through-hole Foam Metal in Heat Exchangers
Considering that the through-hole foam metal has strong liquidity,good thermal conductivity,strong plasticity,and good sound absorption,support,lightweight and other characteristics,the practice of filling the gap between the heat exchange unit and the heat source with foam material is widely used in heat exchange equipment.In order to fully study and further develop the potential value of through-hole foam metal in heat exchangers,the theoretical research,numerical research and experimental research of foam metal in heat exchangers at home and abroad are summarized.Considering that the thermal conductivity of solids,the heat transfer of fluids,and the fluidity of fluids are three characteristics that must be considered and taken into account in heat exchangers,the synergistic relationship between key parameters such as cell model parameters,flow rate,pressure drop,and convective heat transfer coefficient has been systematically sorted out;the modeling of the foam metal cell and the arrangement of the filling in the heat exchanger are analyzed;the relationship between heat transfer and pressure drop of foam metal is evaluated by comprehensive performance index and directions and suggestions for further research in the future are proposed.
through-hole foam metalcellular modelflow characteristicsheat transfer characteristicsperformance index
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