원문정보
초록
영어
Recently, the development of the HTS power cable is actively promoted. As the length of HTS power cable increases, there have been many efforts to develop large capacity cryocooler. Among the various cryocooler, the Brayton refrigerator is the most competitive for HTS power cable. The Brayton refrigerator is composed of recuperative heat exchangers, a compressor, and a cryogenic turbo expander. In these components, the cryogenic turbo expander is a part to decrease the temperature and it is the most significant component that is closely related with overall system efficiency. It rotates with high speed using a high-pressure helium or neon gas at cryogenic temperature. This paper describes the design of a 10 kW class Brayton refrigeration cycle and the cryogenic turbo expander. Flow and structural analysis are performed for the rotating impeller and nozzle to verify the efficiency and the design performance.
목차
1. INTRODUCTION
2. DESIGN OF THE BRAYTON REFRIGERATION CYCLE
2.1. Design criteria of the thermodynamic cycle
2.2. Design of the reverse Brayton cycle
3. DESIGN OF TURBO EXPANDER
3.1. Shape design
3.2. Flow Simulation
3.3. Structural analysis
4. ANALYSIS RESULT
5. CONCLUSION
ACKNOWLEDGMENT
REFERENCES