Vibration and heat transfer performances analysis of a hollow helical baffle heat exchanger
SUN Yaru1,JI Jiadong2,HUA Zisen1,WANG Chengjun1,WANG Yan1
1.School of Artificial Intelligence, Anhui University of Science & Technology, Huainan 232001, China;
2.School of Mechanical Engineering, Anhui University of Science & Technology, Huainan 232001, China
Abstract：A hollow helical baffle (HHB) heat exchanger was put forward to balance the vibration performance and improve the heat transfer performance of helical heat transfer element. The fluid-solid coupling method was provided to study the effects of entrance velocity and the installed position of baffle on the performances of vibration and heat transfer. Based on the numerical results, HHB heat exchanger can effectively balance the vibration performance and improve the heat transfer performance. The vibration amplitude and heat transfer coefficient of heat transfer elements increase with the increase of entrance velocity. It is found that when the baffle is installed on the top side of the heat exchanger, the average vibration amplitude is the biggest, the average heat transfer coefficient is the smallest and the heat transfer uniformity is the best. The PEC value of HHB heat exchanger is always bigger than 1 which shows that the HHB heat exchanger has achieved the effect of enhancing heat transfer. When the baffle is installed on the bottom, top, left and right side of HHB heat exchanger, the PEC value of HHB heat exchanger can be increased by 2.04%, 7.87%, 1.32% and 0.03% compared with that of the conventional elastic tube bundle (CETB), respectively. When the baffle is installed on the top side of the HHB heat transfer, the PEC value is the maximum and the comprehensive heat transfer performance is the best.
孙亚茹1，季家东2，华子森1，王成军1，王艳1. 带螺旋折流板的中空换热器振动和传热特性分析[J]. 振动与冲击, 2023, 42(8): 251-258.
SUN Yaru1,JI Jiadong2,HUA Zisen1,WANG Chengjun1,WANG Yan1 . Vibration and heat transfer performances analysis of a hollow helical baffle heat exchanger. JOURNAL OF VIBRATION AND SHOCK, 2023, 42(8): 251-258.
[1] Cheng L, Qiu Y. Complex heat transfer enhancement by fluid-induced vibration[J].Journal of Hydrodynamics, 2003, 15(1): 84-89.
[2] Mitsuishi A, Sakoh M, Shimura T, et al. Direct numerical simulation of convective heat transfer in a pipe with transverse vibration[J]. International Journal of Heat and Mass Transfer, 2020, 148: 119048
[3] Bergles A E. Heat transfer enhancement-the maturing of the second-generation heat transfer technology[J]. Heat Transfer Engineering. 1997, 18: 47-55.
[4] 季家东，葛培琪，毕文波. 流体诱导弹性管束振动响应数值分析[J].振动与冲击，2016，35(06)：80-84.
JI Jia-dong, GE Pei-qi, BI Wen-bo. Numerical analysis on flow-induced vibration responses of elastic tube bundle[J]. Journal of Vibration and Shock, 2016, 35(6): 80-84.
[5] 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.
[6] Yan K, Ge P Q, Hong J. Experimental study of shell side flow-induced vibration of conical spiral tube bundle[J]. Journal of Hydrodynamics, 2013, 25(5): 695-701.
[7] 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
[8] Jamshidi N, Farhadi M, Ganji D D, et al. Experimental analysis of heat transfer enhancement in shell and helical tube heat exchangers[J]. Applied Thermal Engineering, 2013, 51: 644-652.
[9] Khosravi-Bizhaem H, Abbassi A, Ravan A Z. Heat transfer enhancement and pressure drop by pulsating flow through helically coiled tube: an experimental study[J]. Applied Thermal Engineering, 2019, 160: 114012
[10] Ji J D, Gao R M, Chen Q H, et al. Analysis on fluid-induced vibration and heat transfer of helical elastic tube bundles[J]. Journal of Thermophysics and Heat Transfer, 2021, 35(1): 171-178.
[11] 季家东, 高润淼, 陈卫强, 等. 螺旋弹性管束换热器壳程振动强化传热研究[J]. 工程热物理学报, 2021, 42(10): 2692-2699.
JI Jia-dong, GAO Run-miao, CHEN Wei-qiang, et al. Study on shell-side vibration-enhanced heat transfer of helical elastic tube heat exchanger[J]. Journal of Engineering Thermophysics, 2021, 42(10): 2692-2699.
[12] Lutcha J, Nemcansky J. Performance improvement of tubular heat exchangers by helical baffle[J]. Chemical Engineering Research and Design, 2009, 68: 263–270.
[13] Yang J F, Lin Y S, Ke H B, et al. Investigation on combined multiple shell-pass shell-and-tube heat exchanger with continuous helical baffles[J]. Energy, 2016, 115: 1572–1579.
[14] Wen J, Zang H Z, Wang S M, et al. PIV experimental investigation on shell-side flow patterns of shell and tube heat exchanger with different helical baffles[J]. International Journal of Heat and Mass Transfer, 2017, 104: 247–259.
[15] Cao X, Zhang R, Chen D, et al. Performance investigation and multi-objective optimization of helical baffle heat exchangers based on thermodynamic and economic analyses[J]. International Journal of Heat and Mass Transfer, 2021, 176: 121489.
[16] Master B I, Chunangad K S, Boxma A J, et al. Most frequently used heat exchangers from pioneering research to worldwide applications[J]. Heat Transfer Engineering, 2006, 27(6): 4–11.
[17] Peng B, Wang Q W, Zhang C, et al. An experimental study of shell-and-tube heat exchangers with continuous helical baffles[J]. ASME Journal of Heat Transfer, 2007, 129(10): 1425–1431.
[18] Duan D R, Ge P Q, Bi W B. Numerical study on the heat transfer enhancement and fatigue life by flow-induced vibration[J]. Chemical Engineering Research & Design, 2018, 132: 652-663.
[19] Webb R L. Performance evaluation criteria for use of enhanced Heat transfer surfaces in heat exchanger design[J]. International Journal of Heat and Mass Transfer, 1981, 24(4): 715–726.
