US 12,437,902 B2
Method and device for cooling of a superconducting cable and corresponding system
Alexander Alekseev, Wolfratshausen (DE)
Assigned to Linde GmbH, Pullach (DE)
Filed by Linde GmbH, Pullach (DE)
Filed on Jul. 20, 2021, as Appl. No. 17/443,063.
Claims priority of application No. 20020335 (EP), filed on Jul. 23, 2020.
Prior Publication US 2022/0028583 A1, Jan. 27, 2022
Int. Cl. H01B 12/16 (2006.01); C09K 5/04 (2006.01); H01B 7/42 (2006.01); H02G 15/34 (2006.01)
CPC H01B 12/16 (2013.01) [C09K 5/041 (2013.01); H01B 7/423 (2013.01); H02G 15/34 (2013.01); C09K 2205/132 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for cooling a superconducting cable (1) using a coolant comprising liquid nitrogen, the method comprising:
subjecting at least a part of the coolant to a subcooling step and thereafter bringing the at least a part of the coolant into thermal contact with the superconducting cable (1) in a cooling cycle,
wherein said subcooling step is at least in part performed using a refrigerant which is provided in a Brayton process in which at least a part of the refrigerant is cooled and heated in a main heat exchanger (11) and a part of the coolant is withdrawn from the cooling cycle and heated in the same main heat exchanger (11) in which at least a part of the refrigerant is cooled and heated in the Brayton process.