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논문 기본 정보

자료유형
학술저널
저자정보
Maofei Geng (Hefei General Machinery Research Institute) Yuntao Song (Chinese Academy of Science) Anyi Cheng (Chinese Academy of Science) Hansheng Feng (Chinese Academy of Science)
저널정보
한국유체기계학회 International Journal of Fluid Machinery and Systems International Journal of Fluid Machinery and Systems Vol.13 No.1
발행연도
2020.3
수록면
214 - 221 (8page)
DOI
10.5293/IJFMS.2020.13.1.214

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초록· 키워드

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To improve the efficiency of the Experimental Advanced Superconducting Tokamak (EAST) subcooled helium cryogenic system, a centrifugal cold compressor (CC) was investigated as an alternative to the oil ring pump. A numerical simulation method was applied to analyse variations in CC performance parameters, pressure ratio and polytropic efficiency. Results indicated that the performance curve of the CC and warm compressor (WC) were similar. The tip clearance at the design point was 0.2 mm and increased to 0.231 mm when the CC was operated at 4 K. This increase in tip clearance resulted in a 0.86% drop in the pressure ratio and a 0.54% drop in polytropic efficiency. To verify the simulation model, experiments were done using cold nitrogen.

목차

Abstract
1. Introduction
2. Design and Numerical Model of the Cold Compressor
3. Different Tip Clearance Effects on Performance of Cold Compressor
4. Influence of Temperature on the Tip Clearance and Performance of Cold Compressor
5. Accuracy of the Numerical Simulation
6. Conclusion
References

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UCI(KEPA) : I410-ECN-0101-2020-554-000473644