Study of Corrosion Resistance Properties of Heat Exchanger Metals in Two Different Geothermal Environments
International audience Geothermal fluids harnessed for electricity production are generally corrosive because of their interaction with the underground. To ensure the longevity and sustainability of geothermal Organic Rankine Cycle (ORC) powerplants, the choice of heat exchanger material is essentia...
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ftunivnantes:oai:HAL:hal-03702722v1 2023-05-15T16:50:42+02:00 Study of Corrosion Resistance Properties of Heat Exchanger Metals in Two Different Geothermal Environments Davíðsdóttir, Svava Gunnarsson, Baldur Geir Kristjánsson, Kjartan Björgvin Ledésert, Béatrice Ólafsson, Dagur Ingi Laboratoire Géosciences et Environnement Cergy (GEC) Fédération INSTITUT DES MATÉRIAUX DE CERGY-PONTOISE (I-MAT) CY Cergy Paris Université (CY)-CY Cergy Paris Université (CY) 2021-12 https://hal.archives-ouvertes.fr/hal-03702722 https://doi.org/10.3390/geosciences11120498 en eng HAL CCSD MDPI info:eu-repo/semantics/altIdentifier/doi/10.3390/geosciences11120498 hal-03702722 https://hal.archives-ouvertes.fr/hal-03702722 doi:10.3390/geosciences11120498 ISSN: 2076-3263 Geosciences https://hal.archives-ouvertes.fr/hal-03702722 Geosciences, MDPI, 2021, 11 (12), pp.498. ⟨10.3390/geosciences11120498⟩ [SDU.STU]Sciences of the Universe [physics]/Earth Sciences info:eu-repo/semantics/article Journal articles 2021 ftunivnantes https://doi.org/10.3390/geosciences11120498 2022-08-09T23:51:13Z International audience Geothermal fluids harnessed for electricity production are generally corrosive because of their interaction with the underground. To ensure the longevity and sustainability of geothermal Organic Rankine Cycle (ORC) powerplants, the choice of heat exchanger material is essential. The performance of heat exchangers is affected by corrosion and scaling due to the geothermal fluids, causing regular cleaning, part replacement, and in the worst cases, extensive repair work. The properties of geothermal fluids vary between geothermal settings and even within geothermal sites. Differences in exposure conditions require different material selection considerations, where factors such as cost, and material efficiency are important to consider. This work studies in-situ geothermal exposure testing of four metals at two geothermal locations, in different geological settings. Four corrosion-resistant materials were exposed for one month at Reykjanes powerplant in Iceland and four months at Chaunoy oil field in France as material candidates for heat exchangers. The tested alloys were analysed for corrosion with macro- and microscopic techniques using optical and electron microscopes, which give an indication of the different frequencies of repairs and replacement. Inconel 625 showed no effects at Reykjanes and cracks at Chaunoy. The others (316L, 254SMO, and titanium grade 2) showed either corrosion or erosion traces at both sites. Article in Journal/Newspaper Iceland Université de Nantes: HAL-UNIV-NANTES Reykjanes ENVELOPE(-22.250,-22.250,65.467,65.467) Geosciences 11 12 498 |
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Open Polar |
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Université de Nantes: HAL-UNIV-NANTES |
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ftunivnantes |
language |
English |
topic |
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
spellingShingle |
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences Davíðsdóttir, Svava Gunnarsson, Baldur Geir Kristjánsson, Kjartan Björgvin Ledésert, Béatrice Ólafsson, Dagur Ingi Study of Corrosion Resistance Properties of Heat Exchanger Metals in Two Different Geothermal Environments |
topic_facet |
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
description |
International audience Geothermal fluids harnessed for electricity production are generally corrosive because of their interaction with the underground. To ensure the longevity and sustainability of geothermal Organic Rankine Cycle (ORC) powerplants, the choice of heat exchanger material is essential. The performance of heat exchangers is affected by corrosion and scaling due to the geothermal fluids, causing regular cleaning, part replacement, and in the worst cases, extensive repair work. The properties of geothermal fluids vary between geothermal settings and even within geothermal sites. Differences in exposure conditions require different material selection considerations, where factors such as cost, and material efficiency are important to consider. This work studies in-situ geothermal exposure testing of four metals at two geothermal locations, in different geological settings. Four corrosion-resistant materials were exposed for one month at Reykjanes powerplant in Iceland and four months at Chaunoy oil field in France as material candidates for heat exchangers. The tested alloys were analysed for corrosion with macro- and microscopic techniques using optical and electron microscopes, which give an indication of the different frequencies of repairs and replacement. Inconel 625 showed no effects at Reykjanes and cracks at Chaunoy. The others (316L, 254SMO, and titanium grade 2) showed either corrosion or erosion traces at both sites. |
author2 |
Laboratoire Géosciences et Environnement Cergy (GEC) Fédération INSTITUT DES MATÉRIAUX DE CERGY-PONTOISE (I-MAT) CY Cergy Paris Université (CY)-CY Cergy Paris Université (CY) |
format |
Article in Journal/Newspaper |
author |
Davíðsdóttir, Svava Gunnarsson, Baldur Geir Kristjánsson, Kjartan Björgvin Ledésert, Béatrice Ólafsson, Dagur Ingi |
author_facet |
Davíðsdóttir, Svava Gunnarsson, Baldur Geir Kristjánsson, Kjartan Björgvin Ledésert, Béatrice Ólafsson, Dagur Ingi |
author_sort |
Davíðsdóttir, Svava |
title |
Study of Corrosion Resistance Properties of Heat Exchanger Metals in Two Different Geothermal Environments |
title_short |
Study of Corrosion Resistance Properties of Heat Exchanger Metals in Two Different Geothermal Environments |
title_full |
Study of Corrosion Resistance Properties of Heat Exchanger Metals in Two Different Geothermal Environments |
title_fullStr |
Study of Corrosion Resistance Properties of Heat Exchanger Metals in Two Different Geothermal Environments |
title_full_unstemmed |
Study of Corrosion Resistance Properties of Heat Exchanger Metals in Two Different Geothermal Environments |
title_sort |
study of corrosion resistance properties of heat exchanger metals in two different geothermal environments |
publisher |
HAL CCSD |
publishDate |
2021 |
url |
https://hal.archives-ouvertes.fr/hal-03702722 https://doi.org/10.3390/geosciences11120498 |
long_lat |
ENVELOPE(-22.250,-22.250,65.467,65.467) |
geographic |
Reykjanes |
geographic_facet |
Reykjanes |
genre |
Iceland |
genre_facet |
Iceland |
op_source |
ISSN: 2076-3263 Geosciences https://hal.archives-ouvertes.fr/hal-03702722 Geosciences, MDPI, 2021, 11 (12), pp.498. ⟨10.3390/geosciences11120498⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.3390/geosciences11120498 hal-03702722 https://hal.archives-ouvertes.fr/hal-03702722 doi:10.3390/geosciences11120498 |
op_doi |
https://doi.org/10.3390/geosciences11120498 |
container_title |
Geosciences |
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11 |
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12 |
container_start_page |
498 |
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1766040823968825344 |