Recently, High-Temperature Superconducting (HTS) appliances have been transitioning from the research phase to the product development stage. A turbo-Brayton refrigerator that uses neon gas as its working fluid is considered to be suitable for the cooling of large-scale equipment such as HTS cables. The reason for this is its compactness and high capacity, as well as its high reliability during long-term operation and relatively easy maintenance owing to its oil-free nature. IHI has been working with TAIYO NIPPON SANSO CORPORATION on the development of such a turbo-Brayton refrigerator since 2006. This report describes the CFD analysis that is used in the aerodynamic development of the turbines and compressors that constitute the refrigeration system.
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