折流板对锥形螺旋管束壳程传热性能的影响

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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.

Key words： conical spiral elastic tube bundle heat exchanger baffle vibration-enhanced heat transfer

Received: 19 July 2022 Published: 28 July 2023

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	Articles by authors
	JI Jiadong1
	LU Yu1
	ZHANG Jingwei1
	LI Feiyang2
	DENG Ruyi1

Cite this article:

JI Jiadong1,LU Yu1,ZHANG Jingwei1, et al. Effect of baffles on the shell side heat transfer performance of a conical spiral tube bundle[J]. JOURNAL OF VIBRATION AND SHOCK, 2023, 42(14): 56-63.

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http://jvs.sjtu.edu.cn/EN/ OR http://jvs.sjtu.edu.cn/EN/Y2023/V42/I14/56

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