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P: Fachverband Plasmaphysik
P 6: Plasma Wall Interaction I
P 6.5: Vortrag
Dienstag, 17. März 2026, 12:15–12:30, KH 01.020
Investigation on the Limitations of Liquid Metal Heat Pipes for Fusion Applications by Thermal Resistance Modeling — •Max Voncken1,2, Menno Bakker2, Seyedmohammad Vafaei2, Yiran Mao2, Alexis Terra2, Jan Willem Coenen2, and Christian Linsmeier2 — 1Eindhoven University of Technology, Power&Flow Group, Department of Mechanical Engineering, Groene Loper 3, 5612 AE Eindhoven, Netherlands. — 2Forschungszentrum Jülich GmbH, Institute of Fusion Energy and Nuclear Waste Management - Plasma Physics (IFN-1), Jülich 52425, Germany
Liquid metal heat pipes (LMHPs) can manage extreme heat fluxes with exceptionally high thermal conductivity. This capability makes them a promising alternative to conventional monoblocks for cooling plasma-facing components (PFCs) in the divertor region of magnetic confinement fusion devices. In this study, the thermal limitations of sodium and lithium as candidate working fluids and viable design parameter ranges for the envelope, such as diameter, length, and wall thickness, are identified. This has been achieved by a relatively simplified model of thermal resistance, employed as a fast pre-design tool prior to detailed CFD simulations. The developed model is also used to evaluate the thermal performance of a commercially available LMHP, and it is validated against the experiments.
Keywords: Heat pipe; Liquid metal; Divertor; Thermal resistance; Conduction-based model