A superconducting fault current limiter integrated in the cold heat exchanger of athermoacoustic refrigerator

Abstract

In this work we probe a compact superconducting fault current limiter (SFCL) integrated in the coldheat exchanger of a thermoacoustic refrigerator. A design for an SFCL device with a power of about2.2 kW is presented and described in detail. A thermoacoustic refrigerator isalso proposed which, under fault conditions, must be able to remove around50 Wat 80 K. A simulation routine is run to test the performance of the SFCL, based on YBCO films,in terms of both the limiting capacity and the energy to be dissipated and removed insidethe heat exchanger.