Failure analysis of a titanium plate heat exchanger – Mechanical fatigue

Pelliccione, A.S.; SantAnna, Rafael; Siqueira, Marcio H. S.; Ribeiro, A.F.; Ramos, Julio Endress; Silva, O.P.; Pimentel, M.F.

doi:10.1016/j.engfailanal.2019.07.059

Cited by 17 publications

(3 citation statements)

References 5 publications

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“…2019) studied the failure involving fatigue behavior of GPHE occurred in gasket place due to bending loading. [11] Hoseinzadeh and Heyns (2020) analyzed fatigue life of tube and shell heat exchanger and found 10 5 and 10 4 cycles for thermal stresses of the joints of the tube sheet and tube joints. [12] Santos et al (2024) investigated thermal analysis with GPHE and shown the in uence of Nusselt number and friction factor related to tightening distance and plate thickness.…”

Section: Introductionmentioning

confidence: 99%

Structural Analysis and Sealing Capacity of Gasketed Plate Heat Exchangers with HNBR and EPDM Rubbers

Zanzi,

Dutra,

Martins

et al. 2024

Preprint

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Rubber is an engineering polymer of interest in most industrial sectors. In gasketed plate heat exchangers (GPHEs), these elements comprise gaskets that are responsible for sealing the system under high levels of compression, temperature and pressure. Therefore, it is a necessity to understand how operating conditions affect GPHE structural behavior and sealing performance, regarding rubber materials and features. This work aims at determining GPHE integrity and mechanical characteristics with the aid of sealing performance experiments and strain gauge measurements at critical plate locations in a real equipment and in prototypes consisting of GPHE components. Hydrogenated Nitrile Butadiene Rubber (HNBR) and Ethylene-Propylene-Diene Rubber (EPDM) gasket materials were evaluated. Based on compression strength experiments, the effects of the number of plates and the compression level on the system stiffness in the direction where the quasi-static compression load is applied have been determined. Stable compression strength behavior was attained with prototypes containing six gaskets or more. The combined effects of pressure load and compression levels, and rubber material on sealing performance were obtained with prototypes comprising six gaskets. Stress analysis was possible with plate deformation measurements in a heat exchanger comprising twenty plates. Highest stress levels were obtained with EPDM gaskets during tightening. It is conjectured that higher operation loads can occur with the latter material. Empirical correlations relate sealing capacity and compression level for EPDM and HNBR gaskets.

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Section: Introductionmentioning

confidence: 99%

Structural Analysis and Sealing Capacity of Gasketed Plate Heat Exchangers with HNBR and EPDM Rubbers

Zanzi,

Dutra,

Martins

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

“…Recent studies have been increasingly concerned with the event of variation in the pressure difference between branches of GPHEs. The failure mode studies presented by Pelliccione et al [27] concluded that failures were due to mechanical fatigue. This fact was evidenced by the observed characteristics (striations, marks, nucleation of multiple cracks, and propagation of transgranular cracks).…”

Section: Introductionmentioning

confidence: 99%

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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“…Additionally, a titanium condenser tube, from a petrochemical plant, failed after 15 years because of a large perforation (Shalaby et al , 2011). Pelliccione et al (2019) presented a failure analysis of a plate heat exchanger with grade 1 titanium. Visual inspection detected plates with through-wall cracks.…”

Section: Introductionmentioning

confidence: 99%

Failure analysis of a commercially pure titanium tube in an air conditioner condenser

Yang

Liu

et al. 2021

ACMM

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Purpose The purpose of this paper is to determine the failure reasons and failure mechanism of the commercially pure titanium air conditioning condenser. Design/methodology/approach In this paper, chemical analysis, metallographic observation, visual examination and scanning electron microscope examination, corrosion products analysis and working conditions analysis were adopted for determining the reasons for the failure of the condenser. Findings The results indicated that TA2 titanium pipe perforation failure is caused by the synergistic effect of crevice corrosion and deposit corrosion. The corrosion processes can be divided into three steps. Originality/value This research is an originality study on the failure case of a commercially pure titanium air conditioning condenser. This study makes up for the shortage of titanium alloy failure cases and also gives the result of the failure reason and failure mechanism for titanium, which has an engineering significance.

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Failure analysis of a titanium plate heat exchanger – Mechanical fatigue

Cited by 17 publications

References 5 publications

Structural Analysis and Sealing Capacity of Gasketed Plate Heat Exchangers with HNBR and EPDM Rubbers

Structural Analysis and Sealing Capacity of Gasketed Plate Heat Exchangers with HNBR and EPDM Rubbers

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

Failure analysis of a commercially pure titanium tube in an air conditioner condenser

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