High temperature superconductor refrigeration system

Cryogenic refrigeration system (1), comprising:

• a supply means (2) for providing a supply flow of a cryogenic refrigerant;
• a compressor (3) fluidly coupled to said supply means (2) and configured to compress the supplied cryogenic refrigerant;
• and
• a cold box (10) fluidly coupled to the compressor (3), said cold box (10) comprising a first expansion device (4) and a first heat exchanger (5),
• wherein the first expansion device (4) is configured to receive the compressed cryogenic refrigerant (20) from the compressor (3) and expanded and provide the expanded refrigerant to the first heat exchanger (5), and
• wherein the first heat exchanger (5) is configured to be thermally coupled to a load (7), wherein
• the system (1) comprises a second heat exchanger (6) arranged in the cold box (10) comprising at least a first heat exchanging section (6A) and a second heat exchanging section (6B),
• wherein the first heat exchanging section (6A) is configured to receive the expanded refrigerant (22) from the expansion device (4) and to subsequently provide the expanded refrigerant (22) to the first heat exchanger (5);
• wherein the second heat exchanging section (6B) is configured to receive the expanded refrigerant (24) from the first heat exchanger (5) and to subsequently provide the received expanded refrigerant (24) to the first heat exchanger (5),
• wherein the first and second heat exchanger sections (6A, 6B) are thermally coupled, and wherein the first heat exchanger (5) is configured to provide the received expanded refrigerant (24) to the supply means (2) and/or the compressor (3).