Browsing NTNU Open by Author "Høyer-Hansen, Martin"
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Analytical and FEM Calculation of Electrical Parameters of Carbon Steel Pipe in DEH Systems
Chen, Anyuan; Nysveen, Arne; Høyer-Hansen, Martin; Lervik, Jens Kristian (Chapter, 2018)In Direct Electrical Heating (DEH) systems, the pipeline of subsea oil productions conducts a large AC current to generate heat. To further improve the effectiveness of the DEH, higher operating frequency is preferable. ... -
Modeling of Galvanic Corrosion - in Presence of External Direct and Alternating Currents
Wessel, Frederick Andre (Master thesis, 2022)Det har blitt observert økte korrosjonsrater på skip koblet til landstrøm. En mulig forklaring er dannelsen av en galvanisk kobling mellom defekter i malingsbelegget på skipsskroget (karbonstål) og jordingsanlegget på land ... -
Prediction of Heating Power in Magnetic Pipe Conducting Large AC Current With High Frequencies Up to 200Hz
Chen, Anyuan; Nysveen, Arne; Lervik, Jens Kristian; Høyer-Hansen, Martin (Chapter, 2018)In direct electrical heating system (DEHs), which is developed for subsea process to safeguard well stream through pipelines to topside process platform or shore, the production pipeline is also acts as an active conductor ...