Quench and Recovery Characteristics of Solid Nitrogen (SN2) Cooled YBCO Coated Conductor (CC) Tapes with Different Stabilizers

Thermal and Electrical Stabilities of YBCO Coated Conductor Tapes in a Solid Argon-Liquid Nitrogen Mixed Cooling System

“…Lee ( ) Division of Materials Science and Engineering, Korea University, Seoul, Korea e-mail: haigunlee@korea.ac.kr Solid cryogens (SCs) have recently been introduced for cooling HTS power devices. They can enhance thermal stability and protection in cooling systems because they have excellent heat capacity [1][2][3][4][5][6][7][8][9]. SC systems provide large amounts of enthalpy with minimal weight, enabling portability in systems by increasing the recooling to recooling time period (RRTP) [9][10][11][12].…”

“…They can enhance thermal stability and protection in cooling systems because they have excellent heat capacity [1][2][3][4][5][6][7][8][9]. SC systems provide large amounts of enthalpy with minimal weight, enabling portability in systems by increasing the recooling to recooling time period (RRTP) [9][10][11][12]. However, cooling systems that employ SCs alone show a thermal contact problem (thermal "dry-out") between the SC and the object being cooled upon repeated thermal or electrical disturbances [4,9].…”

“…SC systems provide large amounts of enthalpy with minimal weight, enabling portability in systems by increasing the recooling to recooling time period (RRTP) [9][10][11][12]. However, cooling systems that employ SCs alone show a thermal contact problem (thermal "dry-out") between the SC and the object being cooled upon repeated thermal or electrical disturbances [4,9]. To improve thermal contact, mixed-phase cryogens have been proposed using the solid-liquid phase transition temperature of a single component [13].…”