Structural analysis of gasketed plate heat exchangers

Martins, G.S.M.; Santiago, R.S.; Beckedorff, L.; Possamai, Talita Sauter; Oba, Renato; Oliveira, J.L.G.; Oliveira, Amir Antônio Martins; Paiva, K.V.

doi:10.1016/j.ijpvp.2022.104634

Cited by 11 publications

(12 citation statements)

References 13 publications

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“…The equivalent von Mises stress is up to 80% lower than in double load tests in single tests. Martins et al [28] show that the relationship between pressure and stress is practically linear. The GPHE used showed a stress increase of approximately 32 MPa (Von Mises) for a pressure increase of 2 bar in one of the branches.…”

Section: Introductionmentioning

confidence: 99%

“…In the case study presented, the GPHE is designed to cool fresh water (temperature-32 • C; pressure-0.6 to 0.8 MPa) using seawater (temperature-29 • C; pressure-0.3 to 0.4 MPa). Martins et al [28] reported that the pressurization of a single branch (a difference of 10 bar between branches) significantly impacts the mechanical request. The equivalent von Mises stress is up to 80% lower than in double load tests in single tests.…”

Section: Introductionmentioning

confidence: 99%

“…The problem was presented by Petrobras S.A., which reported malfunction by events of pressure variations in plate heat exchangers. The pressure events were quantified by Martins et al [28], and the results show that the high-pressure difference is more harmful than equivalent high pressures in both branches. To emulate these events, a reduced scale of a typical profile pressure variation in oil gas plant production was used.…”

Section: Introductionmentioning

confidence: 99%

“…Based on the background presented, the best results among the tested configurations were observed in test 4. Martins et al [28] described the mechanical stress as having a ratio of 32 MPa for a difference of 2 bar between the exchanger branches. In this configuration, we reduced the pressure difference by 50% in events with greater pressure differences.…”

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confidence: 99%

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Active Control System to Prevent Malfunctioning Caused by the Pressure Difference in Gasket Plate Heat Exchangers Applied in the Oil and Gas Industry

Martins

Spengler

Oliveira

et al. 2022

Sensors

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In the oil and gas industry, heat exchangers are subject to loads that cause malfunctioning. These loads are divided into thermal and mechanical stresses; however, most efforts are focused on studying thermal stresses. The present work reduces mechanical stresses by mitigating pressure events in a gasket plate heat exchanger (GPHE). GPHE requires that the hot and cold stream branches have approximately the same pressure. Thus, the work focuses on controlling the pressure difference between the branches. A test bench was used to emulate, on a small scale, the typical pressure events of an oil production plant. A control valve was used in different positions to evaluate the controller. In the experiments, it was observed that the best option to control the pressure difference is to use a hydraulic pump and control valve in the flow of the controlled thermal fluid branch. The reduction in pressure events was approximately 50%. Actuator efforts are also reduced in this configuration.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Active Control System to Prevent Malfunctioning Caused by the Pressure Difference in Gasket Plate Heat Exchangers Applied in the Oil and Gas Industry

Martins

Spengler

Oliveira

et al. 2022

Sensors

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“…As a critical piece of equipment in the cryogenic treatment process of natural gas liquefaction [1,2], aluminum plate-fin heat exchangers have been widely used because of their compact structure [3,4], moderate pressure drop [5], light weight [6], large heat transfer area [7], excellent heat transfer efficiency [8,9], simultaneous multiple media heat transfer [10,11] and other advantages. Usually, the heat exchanger will be accompanied by frequent cool-down and heat-up during the daily operation.…”

Section: Introductionmentioning

confidence: 99%

Fatigue analysis of brazing structures with fin-plate-side bar in Liquefied Natural Gas (LNG) heat exchangers under cryogenic conditions

Jia

Liu

et al. 2023

STET

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The purpose of this study is to evaluate the fatigue life of heat exchangers used for Liquefied Natural Gas (LNG) and to ensure its structural safety, the alternating stress of brazing structures under cryogenic conditions was analyzed with a Finite Element Model (FEM). Stress concentrations occurred at the brazed joint with a maximum alternating stress amplitude of 153.45 MPa. The fatigue life of brazed structures during the continuous cool-down and heat-up conditions was evaluated based on the ASME standard and the maximum alternating stress amplitude. Meanwhile, structure parameters have been analyzed for their influence on fatigue life. There are four main structure factors to influence the life cycle: the brazing seam, the fin thickness, the fin distance, and the fin height. The life cycle will decrease with increasing the fin distance, fin height, and brazing seam thickness, and it will increase with increasing the fin thickness. In addition, in order to predict fatigue life, a calculating model has been established based on the main factors. Finally, the fatigue life of brazing structures was also tested by experiment, and the microstructure was also analyzed for the fatigue fracture surface. It is clear that brittle fractures along the brazing seam and ductile fractures at the fin roots should be the primary failure modes. The study provides a base for LNG aluminum heat exchanger design, manufacture, and safe operation.

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Structural analysis and sealing capacity of gasketed plate heat exchangers with HNBR and EPDM rubbers

de Sousa Zanzi,

Dutra,

Martins

et al. 2024

J Braz. Soc. Mech. Sci. Eng.

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Structural analysis of gasketed plate heat exchangers

Cited by 11 publications

References 13 publications

Active Control System to Prevent Malfunctioning Caused by the Pressure Difference in Gasket Plate Heat Exchangers Applied in the Oil and Gas Industry

Active Control System to Prevent Malfunctioning Caused by the Pressure Difference in Gasket Plate Heat Exchangers Applied in the Oil and Gas Industry

Fatigue analysis of brazing structures with fin-plate-side bar in Liquefied Natural Gas (LNG) heat exchangers under cryogenic conditions

Structural analysis and sealing capacity of gasketed plate heat exchangers with HNBR and EPDM rubbers

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