TY - JOUR TI - Numerical analysis of the flow and heat transfer characteristics of a staggered perforated louver-finned heat exchanger AU - Cao Kan AU - Yuan Yaohua AU - Li Xiaomin AU - Wang Chunyan AU - Su Zhiyong JN - Thermal Science PY - 2023 VL - 27 IS - 3 SP - 1855 EP - 1863 PT - Article AB - A new kind of louvered fin structures with staggered holes is proposed, numerical simulation is carried out to study the heat transfer factor and the friction factor, and an experiment is designed to verify the simulation results at different Reynolds numbers, a good agreement is observed. Comparison with the traditional louver structure reveals that when the Reynolds number is between 150 and 400, the heat transfer factor increases by 10~24%, the friction factor increases by 1~2%, and the comprehensive evaluation factor increases by 9~23%. These results can be used for optimization of louver finned heat exchangers.