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AC Corrosion of Electrically Heated Pipelines

AC Corrosion of Electrically Heated Pipelines

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Sammendrag
A development program to further increase the competitiveness of the direct electrical heating technology has been initiated. By increasing the power frequency from 50/60 to 100-200 Hz, less current is needed to develop the same heat generation in the pipe. A test program is running with the purpose of studying AC corrosion on the cathodically protected steel pipelines at higher frequencies. This article presents results from initial tests, showing that corrosion on steel specimens are present at 60 Hz, but that zero or very little corrosion is present at 100 and 200 Hz. On the aluminum specimens, corrosion rate is reduced by 55 % from 60 to 100 Hz. and is somewhat further reduced at 200 Hz. Copyright © 2017 by the International Society of Offshore and Polar Engineers (ISOPE).
Språk
Engelsk
Institusjon(er)
  • SINTEF Energi AS / Elkraftteknologi
År
2017
Publisert i
ISOPE - International Offshore and Polar Engineering Conference. Proceedings
ISSN
1098-6189
Forlag
International Society of Offshore & Polar Engineers
Bok
The Proceedings of the twenty-seventh (2017) International Ocean and Polar Engineering Conference - ISOPE 2017
Hefte nr.
2017
ISBN
978-1-880653-97-5
Side(r)
421 - 424