Failure analysis of copper pipes used in the heat exchangers in fan coil units

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dc.contributor.authorSargın F.
dc.contributor.authorKanbur K.
dc.contributor.authorTürkmen İ.
dc.date.accessioned2024-07-22T08:02:52Z
dc.date.available2024-07-22T08:02:52Z
dc.date.issued2023
dc.description.abstractHeat exchangers (HE) consist of copper and steel pipes and are used for heating and cooling the ambient air. One of the main problems seen in HE is the leakage on copper pipes. In this study, failed and properly working copper pipe samples used for different durations were examined in detail. The microstructural analyses were performed using optical microscopy (OM) and scanning electron microscopy (SEM) to detect corrosion occurrences on copper pipe surfaces. In addition, corrosion products of the samples were defined by X-Ray Diffraction (XRD), Energy Dispersive Spectroscopy (EDS) and Fourier-Transform Infrared Spectroscopy (FTIR) analyses. The formation of interconnected tunnels in cross section of the failed copper pipe sample that were in microscopic dimensions and corrosion products were observed. Consequently, all the analyses result that were obtained from the samples pointed out a corrosion mechanism known as ant-nest corrosion. It was concluded that the main reason of corrosion was related to ethylene glycol type additives which were used in HE along with mains water. © 2023 CSIC.
dc.identifier.DOI-ID10.3989/revmetalm.239
dc.identifier.issn00348570
dc.identifier.urihttp://akademikarsiv.cbu.edu.tr:4000/handle/123456789/12034
dc.language.isoEnglish
dc.publisherCSIC Consejo Superior de Investigaciones Cientificas
dc.rightsAll Open Access; Gold Open Access
dc.subjectAdditives
dc.subjectCopper corrosion
dc.subjectCopper pipe
dc.subjectEnergy dispersive spectroscopy
dc.subjectEthylene
dc.subjectEthylene glycol
dc.subjectFailure analysis
dc.subjectFourier transform infrared spectroscopy
dc.subjectPipeline corrosion
dc.subjectScanning electron microscopy
dc.subjectAmbient air
dc.subjectAnt-nest corrosion
dc.subjectCorrosion mechanisms
dc.subjectCorrosion products
dc.subjectDiffraction energy
dc.subjectFan coil unit
dc.subjectHeating and cooling
dc.subjectMicrostructural analysis
dc.subjectPipe surfaces
dc.subjectX- ray diffractions
dc.subjectHeat exchangers
dc.titleFailure analysis of copper pipes used in the heat exchangers in fan coil units
dc.typeArticle

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