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Heat load budgeting of a superconducting induction heater‘s commercial cryocooler-based cryostat

Busch, Lennard; Lietzow, Ralph; Neumann, Holger

Abstract (englisch):
Within a project funded by the German Federal Ministry for Economic Affairs and Energy (BMWI), the Karlsruhe Institute of Technology (KIT) collaborates with the Theva GmbH and Bültmann GmbH to develop a superconduct-ing magnetic heater. The Theva GmbH designs and supplies the high-temperature superconducting (HTS) coil. It will be integrated in a cryostat designed and supplied by KIT and cooled to ca. 25 K via a GM-cryocooler. Granted successful test results at KIT, the cryostat with the superconducting coil will serve to operate an induction heater at the Bültmann GmbH and be assessed there under industrial conditions. The challenge within the cryogenic design lies in the simultaneous requirement of relatively low production costs, robustness and extremely limited operation downtimes to form a competitive product.
This contribution presents aspects of the cryogenic system’s conceptional design, with a focus on its heat load budgeting. Due to the limited cooling capacities of cryocoolers on each stage, the main aim of the design is to distribute the estimated heat loads as suitably as possible between the cryocooler stages. In the cryostat we designed, the total heat loads on both cryocooler stages will have three significant contributions: heat conduc-tion along connected components, Joule heating and thermal radiation. ... mehr

Zugehörige Institution(en) am KIT Institut für Technische Thermodynamik und Kältetechnik (ITTK)
Institut für Technische Physik (ITEP)
Publikationstyp Proceedingsbeitrag
Publikationsdatum 20.11.2020
Sprache Englisch
Identifikator KITopen-ID: 1000127904
HGF-Programm 37.06.02 (POF III, LK 01) New Power Network Technology
Erschienen in Deutsche Kälte- und Klimatagung
Veranstaltung Deutsche Kälte- und Klimatagung (2020), Online, 19.11.2020 – 20.11.2020
Bemerkung zur Veröffentlichung Die Veranstaltung fand wegen der Corona-Pandemie als Online-Event statt.
Schlagwörter Cryogenics, Cryostat, Cryocooler, Heat Load, Superconductivity
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