Heat Transfer Characteristic of Elliptical Section Spiral Copper Tube Heat Exchanger

被引：1
|
作者：
Ji J. [1 ]
Deng R. [1 ]
Lu Y. [1 ]
Zhang J. [1 ]
Li F. [2 ]
机构：
[1] School of Mechanical Engineering, Anhui University of Science cV- Technology, Anhui, Huainan
[2] School of Artificial Intelligence, Anhui University of Science & Technology, Anhui, Huainan
来源：
Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University | 2023年 / 57卷 / 06期
关键词：
elliptical section; hollow tube; spiral baffle; spiral copper tube; vibration enhanced heat transfer;
D O I：
10.7652/xjtuxb202306014
中图分类号：
学科分类号：
摘要：
To obtain the heat exchanger with higher heat transfer efficiency, the structure of the elliptical section spiral copper tube (ESSCT) heat exchanger was improved by installing spiral baffle and hollow tube. The vibration enhanced heat transfer characteristics of the improved ESSCT heat exchanger under different inlet flow velocity and different ratio of transverse and longitudinal radius (e) were studied by using two-way fluid structure coupling calculation method. The study showed that the heat exchanger can reach a higher heat transfer efficiency by using the heat transfer element with an elliptical section instead of a conventional round section. When the section is elliptical (e^l), the heat transfer performance of the ESSCT was improved in varying degrees. Especially, when e; 2, it is enhanced to the greatest extent, and at the same time, the integrated enhanced heat transfer performance of the heat exchanger is the optimal. The mean surface average heat transfer coefficient (SAHTC) and the performance evaluation criteria CEper) of the ESSCT increased with the increase of inlet flow velocity. In addition, the SAHTC under unit pressure drop was more effective at low flow rate, which decreased with the increase of inlet flow velocity. The results in this paper can provide some guidance for the design of the new ESSCT heat exchanger. © 2023 Xi'an Jiaotong University. All rights reserved.
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页码：123 / 132
页数：9
相关论文
共 25 条
  • [1] SU Yancai, LI Mengli, LIU Mingliang, Et al., A study of the enhanced heat transfer of flow-induced vibration of a new type of heat transfer tube bundle: the planar bending elastic tube bundle, Nuclear Engineering and Design, 309, pp. 294-302, (2016)
  • [2] MITSUISHI A, SAKOH M, SHIMURA T, Et al., Direct numerical simulation of convective heat transfer in a pipe with transverse vibration, International Journal of Heat and Mass Transfer, 148, (2020)
  • [3] LI Ke, WEN Jian, LI Yanzhong, Et al., Research on construction of distributed parameter model and optimization of cross-flow plate fin heat exchanger, Journal of Xi'an Jiaotong University, 56, 10, pp. 81-90, (2022)
  • [4] YAN Ke, GE Peiqi, ZHAI Qiang, A comprehensive comparison on vibration and heat transfer of two elastic heat transfer tube bundles, Journal of Central South University, 22, 1, pp. 377-385, (2015)
  • [5] CHENG L, LUAN T, DU W, Et al., Heat transfer enhancement by flow-induced vibration in heat exchangers, International Journal of Heat and Mass Transfer, 52, 3, pp. 1053-1057, (2009)
  • [6] JI Jiadong, ZHANG Jingwei, GAO Runmiao, Et al., Numerical research on vibration-enhanced heat transfer of elastic scroll tube bundle, Journal of Thermo-physics and Heat Transfer, 36, 1, pp. 61-68, (2022)
  • [7] JI Jiadong, CHEN Weiqiang, DENG Xu, Et al., Influence of the flow direction on the vibration and heat transfer characteristics of an elastic tube bundle, Journal of Vibration and Shock, 41, 18, pp. 252-257, (2022)
  • [8] JI Jiadong, GE Peiqi, BI Wenbo, Et al., Shell-side flow-induced vibration responses of elastic tube bundle based on different tube combinations, Journal of Xi'an Jiaotong University, 52, 3, pp. 69-75, (2018)
  • [9] BERGLES A E., Recent developments in enhanced heat transfer, Heat and Mass Transfer, 47, 8, pp. 1001-1008, (2011)
  • [10] DUAN Derong, GE Peiqi, BI Wenbo, Numerical investigation on heat transfer performance of planar elastic tube bundle by flow-induced vibration in heat exchanger, International Journal of Heat and Mass Transfer, 103, pp. 868-878, (2016)
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