Evaluation of simplified heat transport for power cables in pipes
Chapter, Peer reviewed
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Date
2023Metadata
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- Publikasjoner fra CRIStin - SINTEF Energi [1614]
- SINTEF Energi [1731]
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Jicable'23 - 11th International Conference on Power Insulated Cables, Lyon - France 18-22 June 2023 : proceedingsAbstract
Power cables in air- or water-filled pipes are the thermal bottleneck in many installations. Some parts of the industry reduce the complexity of their numerical models by combining conduction, convection, and surface-surface radiation into an effective thermal conductivity by formulas and constants from IEC 60287. In this work, case studies show that such simplification can become too inaccurate for air-filled pipes. The simplification can be used as an estimate for some engineering purposes in water-filled pipes. A brief review of the heat transfer equations shows that IEC 60287 thermal resistance does not accurately represent the actual thermal resistance T4'. KEYWORDS Power cables; ampacity calculations; cables in pipes; finite element analysis; IEC 60287. Evaluation of simplified heat transport for power cables in pipes