Analysis on the heat transfer characteristics of spiral elastic tube bundle heat exchangers with different cross section shapes
JI Jiadong1,ZHOU Rong1,GAO Runmiao1,ZHANG Jingwei1,DENG Xu1,LI Feiyang2
1.School of Mechanical Engineering, Anhui University of Science & Technology, Huainan 232001,China;
2.School of Artificial Intelligence, Anhui University of Science & Technology, Huainan 232001,China
Abstract:In order to explore the influence of section shape on the heat transfer performance of spiral elastic tube bundle (SETB) heat exchanger, four section shapes (quadrilateral section, hexagonal section, elliptical section and circular section) were set up in this paper. By using the two-way fluid structure coupling calculation method, the vibration and heat transfer characteristics of single-layer four SETBs at different inlet velocities were studied. The results show that the vibration responses of SETBs with different cross-section shapes are obviously different at different installation positions in the heat exchanger. The heat transfer coefficient of the SETB with elliptical section is the highest under vibration and non-vibration conditions, and the local heat transfer coefficient on the circumference of the SETB with elliptical section is the largest. It shows that the heat transfer performance is the best when the section shape of the SETB is ellipse. Vibration can enhance heat transfer, but the heat transfer performance of SETB with severe vibration is not necessarily the best. Therefore, we should not blindly pursue high-intensity vibration in the design of the SETB heat exchanger, but also comprehensively consider the installation position and section shape of the SETB.
Key words: section shape; vibration-enhanced heat transfer; fluid structure coupling; spiral elastic tube bundle; heat exchanger
季家东1,周蓉1,高润淼1,张经纬1,邓旭1,李飞扬2. 基于不同截面形状的螺旋弹性管束换热器传热特性分析[J]. 振动与冲击, 2022, 41(22): 219-225.
JI Jiadong1,ZHOU Rong1,GAO Runmiao1,ZHANG Jingwei1,DENG Xu1,LI Feiyang2. Analysis on the heat transfer characteristics of spiral elastic tube bundle heat exchangers with different cross section shapes. JOURNAL OF VIBRATION AND SHOCK, 2022, 41(22): 219-225.
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