TY - JOUR
TI - Numerical simulation of heat transfer and flow characteristics for plate fin-and-tube heat exchanger with ring-bridge slit fins
AU - Wang Zihao
AU - Ouyang Xinping
JN - Thermal Science
PY - 2024
VL - 28
IS - 1
SP - 77
EP - 88
PT - Article
AB - In this paper, a new type of ring-bridge slit fins of plate fin-and-tube was proposed. It was studied by 3-D numerical simulation of heat transfer and flow using FLUENT. A sample of plate fin-and-tube exchanger with ring-bridge slit fins was tested. The reliability of the simulation was demonstrated by contrasting the simulated data with the experimental data. Six different structural parameters were investigated for their effects on the flow and heat transfer performance of the plate fin-and-tube exchanger with ring-bridge fins. It was found that the fin pitch had the most significant effect on the heat transfer and flow performance of the ring-bridge slit fins. Proper reduction of the front ring-bridge slit angle of the sample was beneficial to the overall heat transfer performance. The overall heat transfer performance was weakened by both decreasing or increasing the rear ring-bridge slit angle of the sample. The optimal fin structure was obtained by the orthogonal experimental method.