Effect of baffles on the shell side heat transfer performance of a conical spiral tube bundle
JI Jiadong1，LU Yu1，ZHANG Jingwei1，LI Feiyang2，DENG Ruyi1
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：Based on the conical spiral elastic tube bundle (CSETB) heat exchanger, an elastic bundle heat transfer equipment with higher heat transfer performance can be obtained by installing pulsating/drainage baffle plate in the heat exchanger. The vibration enhancement performances of CSETB heat exchanger under different shell inlet velocities and different structural schemes were studied by using two-way fluid-structure coupling calculation method. The results show that the amplitude of CSETB increases with the increase of inlet velocity, and only installing pulsating baffle plate can make CSETB show relatively large high-frequency vibration, while both installing pulsating baffle plate and drainage baffle plate can make CSETB show relatively large low frequency vibration. The installation of baffle plate can enhance the regularity of fluid flow and the stratified distribution of temperature field, and can greatly improve the heat transfer ability of shell side of heat exchanger. Vibration can enhance heat transfer, and the degree of heat transfer enhancement is more obvious at high inlet velocity, and the installation of baffle plate can significantly improve the vibration enhanced heat transfer performance of CSETB. In addition, the existence of drainage baffle reduces the comprehensive heat transfer performance of heat exchanger.
季家东1，卢钰1，张经纬1，李飞扬2，邓如意1. 折流板对锥形螺旋管束壳程传热性能的影响[J]. 振动与冲击, 2023, 42(14): 56-63.
JI Jiadong1，LU Yu1，ZHANG Jingwei1，LI Feiyang2，DENG Ruyi1. Effect of baffles on the shell side heat transfer performance of a conical spiral tube bundle. JOURNAL OF VIBRATION AND SHOCK, 2023, 42(14): 56-63.
[1] JI J D, LI F Y, SHI B J, et al. Analysis of the effect of baffles on the vibration and heat transfer characteristics of elastic tube bundles [J]. International Communications in Heat and Mass Transfer, 2022, 136: 106206.
[2] JI J D, GE P Q, LIU P, et al. Design and application of a new distributed pulsating flow generator in elastic tube bundle heat exchanger [J]. International Journal of Thermal Sciences, 2018, 130: 216-226.
[3] BERGLES A E. Recent developments in enhanced heat transfer [J]. Heat and Mass Transfer, 2011, 47(8): 1001-1008.
[4] KOZLOV V G, VJATKIN A A, SABIROV R R, et al. Methods of experimental study of thermal convection in cavity subject to rotation and vibration [J]. MethodsX, 2019, 6: 2420-2428.
[5] 闫柯. 换热器内锥螺旋弹性管束振动与传热特性研究[D]. 济南：山东大学，2012.
Yan Ke. A study on the vibration and heat transfer characteristics of conical spiral tube bundle in heat exchanger [D]. Jinan: Shandong University, 2012.
[6] CHENG L, LUAN T, DU W, et al. Heat transfer enhancement by flow-induced vibration in heat exchangers [J]. International Journal of Heat and Mass Transfer, 2009, 52(3-4): 1053-1057.
[7] 季家东. 弹性管束换热器壳程分布式脉动流诱导管束振动研究[D]. 济南：山东大学，2016.
JI Jiadong. Study on flow-induced vibration of elastic tube bundle with shell-side distributed pulsating flow in heat exchange [D]. Jinan: Shandong University, 2016.
[8] JI J D, GAO R M, CHEN W Q, et al. Analysis of vortex flow in fluid domain with variable cross-section and design of a new vortex generator [J]. International Communications in Heat and Mass Transfer, 2020, 116: 104695.
[9] JI J D, GE P Q, BI W B. Numerical analysis on shell-side flow-induced vibration and heat transfer characteristics of elastic tube bundle in heat exchanger [J]. Applied Thermal Engineering, 2016, 107: 544-551.
[10] JI J D, ZHANG J W, GAO R M, et al. Numerical research on vibration-enhanced heat transfer of improved elastic tube bundle heat exchanger [J]. Case Studies in Thermal Engineering. 2022, 33: 101936.
[11] 季家东，张经纬，高润淼，等. 脉动流发生装置诱导弹性管束振动的实验研究[J]. 振动与冲击，2021，40(3)：291-296.
JI Jiadong, ZHANG Jingwei, GAO Runmiao, et al. Tests for pulsating flow generator-induced vibration of elastic tube bundle [J]. Journal of Vibration and Shock, 2021, 40(3): 291-296
[12] 季家东，葛培琪，毕文波. 换热器内多排弹性管束壳程流体诱导振动响应的数值分析[J]. 振动与冲击，2016，35(20)：85-89.
JI Jiadong, GE Peiqi, BI Wenbo. Numerical analysis on shell-side flow induced vibration responses of multi-row elastic tube bundles in heat exchangers [J]. Journal of Vibration and Shock, 2016, 35(20): 85-89.
[13] DUAN D R, GE P Q, BI W B. Numerical investigation on heat transfer performance of planar elastic tube bundle by flow-induced vibration in heat exchanger [J]. International Journal of Heat and Mass Transfer, 2016, 103: 868-878.
[14] DUAN D R, GE P Q, BI W B, et al. Numerical Investigation on The Heat Transfer Enhancement Mechanism of Planar Elastic Tube Bundle By Flow-induced Vibration [J]. International Journal of Thermal Sciences, 2017, 112: 450-459.
[15] YAN K, GE P Q, ZHAI Q. A comprehensive comparison on vibration and heat transfer of two elastic heat transfer tube bundles [J]. Journal of Central South University, 2015, 22: 377-385.
[16] CHEN J, LI N Q, DING Y, et al. Experimental thermal-hydraulic performances of heat exchangers with different baffle patterns [J]. Energy, 2020, 205: 118066.
[17] WANG K, LIU J Q, LIU Z C, et al. Fluid flow and heat transfer characteristics investigation in the shell side of the branch baffle heat exchanger [J]. Journal of Applied Fluid Mechanics, 2021, 14(6): 1775-1786.
[18] JI J D, GAO R M, SHI B J, et al. Improved tube structure and segmental baffle to enhance heat transfer performance of elastic tube bundle heat exchanger [J]. Applied Thermal Engineering, 2022, 200: 117703.
[19] SALIMPOUR M R. Heat transfer coefficients of shell and coiled tube heat exchangers [J]. Experimental Thermal and Fluid Science. 2009, 33(2): 203-207.
