The influence of residual stress for the strength of plate-fin structures in the typical operation process of Liquefied Natural Gas (LNG) heat exchanger

doi:10.2516/ogst/2021063

IR > 土木工程学院

	The influence of residual stress for the strength of plate-fin structures in the typical operation process of Liquefied Natural Gas (LNG) heat exchanger
	Ma, Hongqiang1,2 ; Jia, Jiwei 1,2; Luo, Xinmei 1; Wang, Li 2; Hou, Caiqin2 ; Wang, Gang 2; Zhang, Yujin 3
	2021-12-06
发表期刊	OIL & GAS SCIENCE AND TECHNOLOGY-REVUE D IFP ENERGIES NOUVELLES
ISSN	1294-4475
卷号	76
摘要	In order to ensure the safe operation of heat exchangers in the Liquefied Natural Gas (LNG), the stress analysis model of aluminum Plate-Fin Structure (PFS) is established based on the thermal-elastic-plasticity theory. The residual stress distribution of PFS and its influence on the structural strength is analyzed by the thermal-structural coupling method. The results indicate that the residual stress distribution of PFS is very complex, and the residual stress reaches the peak at the Brazed Joint (BJ). Due to the equivalent stress at BJ near the fin is higher than that at BJ near the plate, cracks are more easily produced at BJ near the fin. Therefore, the existence of residual stress has a negative impact on PFS, which may increase the possibility of strength failure at BJ under the typical operating conditions (normal operation, cut-down and heat-up) of the heat exchanger. In addition, the residual stress gradually decreases with the brazing cooling rate decrease. The residual stress within the PFS will be effectively reduced by properly reducing the brazing cooling rate, which can slow down the strength failure of the PFS. The above research results will provide an important basis for the design and safe operation of the aluminum plate-fin heat exchanger.
DOI	10.2516/ogst/2021063
收录类别	SCIE
语种	英语
WOS研究方向	Energy & Fuels ; Engineering
WOS类目	Energy & Fuels ; Engineering, Chemical ; Engineering, Petroleum
WOS记录号	WOS:000726975800001
出版者	EDP SCIENCES S A
来源库	WOS
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/154953
专题	土木工程学院
通讯作者	Ma, Hongqiang
作者单位	1.East China Jiaotong Univ, Sch Civil Engn & Architecture, Nanchang 330013, Jiangxi, Peoples R China; 2.Lanzhou Univ Technol, Sch Civil Engn, Lanzhou 730050, Peoples R China; 3.Hebei Univ Architecture, Dept Energy Engn, Zhangjiakou 075000, Peoples R China
第一作者单位	兰州理工大学
通讯作者单位	兰州理工大学
推荐引用方式 GB/T 7714	Ma, Hongqiang,Jia, Jiwei,Luo, Xinmei,et al. The influence of residual stress for the strength of plate-fin structures in the typical operation process of Liquefied Natural Gas (LNG) heat exchanger[J]. OIL & GAS SCIENCE AND TECHNOLOGY-REVUE D IFP ENERGIES NOUVELLES,2021,76.
APA	Ma, Hongqiang.,Jia, Jiwei.,Luo, Xinmei.,Wang, Li.,Hou, Caiqin.,...&Zhang, Yujin.(2021).The influence of residual stress for the strength of plate-fin structures in the typical operation process of Liquefied Natural Gas (LNG) heat exchanger.OIL & GAS SCIENCE AND TECHNOLOGY-REVUE D IFP ENERGIES NOUVELLES,76.
MLA	Ma, Hongqiang,et al."The influence of residual stress for the strength of plate-fin structures in the typical operation process of Liquefied Natural Gas (LNG) heat exchanger".OIL & GAS SCIENCE AND TECHNOLOGY-REVUE D IFP ENERGIES NOUVELLES 76(2021).

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