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논문 기본 정보

자료유형
학술대회자료
저자정보
Kuo-Shu Hung (Green Energy & Environ Res Labs) Wei-Chung Hsiao (National Chin-Yi University of Technology) Yi-Chen Li (Green Energy & Environ Res Labs) Yean-Der Kuan (National Chin-Yi University of Technology)
저널정보
대한설비공학회 대한설비공학회 학술발표대회논문집 대한설비공학회 2023년도 하계학술발표대회 논문집
발행연도
2023.6
수록면
388 - 391 (4page)

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초록· 키워드

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Combined with the development of a 240 USRT oil-free centrifugal compressor with low greenhouse effect, this study conducted a numerical simulation of the flow field by adjusting parameters such as speed, number of blades, blade angle, and flow channel configuration in compressor design. The ANSYS-CFX software was used for numerical simulation of CFD, employing the finite volume method to solve the three-dimensional steady-state compressible Navier-Stokes equation set, and the k-ω two-equation model for turbulence modeling. The properties of R513A refrigerant were simulated using the SRK cubic equation of state. The simulation results calculated the inlet-outlet pressure ratio, isentropic efficiency, and shaft work, and were depicted by the velocity vector diagram of the impeller meridian plane. The R-513A refrigerant was successfully used in the newly designed 240USRT two-stage centrifugal compressor in this study. According to the numerical simulation results, at IPLV100% design point, the pressure ratio of the first stage compression is 1.62, the isentropic efficiency is 88.67%, and the shaft work is 59.2 ㎾. The pressure ratio of the second stage compression is 1.55, the isentropic efficiency is 86.76%, and the shaft work is 64.8 ㎾. All of the above values have reached the design values, completing the design verification of the design point. Additionally, simulation of separation point examples illustrated the compressor flow field performance under lower loads, fully presenting the comparison of compressor performance and flow field analysis in four different IPLV conditions.

목차

Abstract
1. Introduction
2. Method
3. Result
4. Conclusion
References

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