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145RT 급 냉동기용 2 단 터보냉매압축기의 공력설계 및 성능시험
박준영(JunYoung Park),황순찬(SoonChan Hwang),김욱중(OokJoong Kim),박무룡(MooRyong Park),윤의수(EuiSoo Yoon),황준현(JoonHyeon Hwang),최상규(Sangkyu Choi) 대한기계학회 2011 대한기계학회 춘추학술대회 Vol.2011 No.10
Two stages centrifugal compressor using R134a as working fluid for a 145RT class chiller has been developed. Each stage of Centrifugal compressors is connected by return channel. An aerodynamic design was done by applying the repeating design procedure including a meanline design, a 3D geometry generation and fluid dynamic calculation. The performance test was also conducted by the experiment. So, in this paper, design, performance prediction and experiments results for two stages turbo refrigerant compressor will be presented.
평균반경해석법을 이용한 축류압축기 성능해석 프로그램 개발
박준영(JunYoung Park),박무룡(MooRyong Park),최범석(BumSuk Choi),송재욱(JeWook Song) 대한기계학회 2009 大韓機械學會論文集B Vol.33 No.2
Axial-flow compressor is one of the most important parts of gas turbine units with axial turbine and combustor. Therefore, precise prediction of performance is very important for development of new compressor or modification of existing one. Meanline analysis is a simple, fast and powerful method for performance prediction of axial-flow compressors with different geometries. So, Meanline analysis is frequently used in preliminary design stage and performance analysis for given geometry data. Much correlations for meanline analysis have been developed theoretically and experimentally for estimating various types of losses and flow deviation angle for long time. In present study, meanline analysis program was developed to estimate compressor losses, incidence angles, deviation angles, stall and surge conditions with many correlations. Performance prediction of one stage axial compressors is conducted with this meanline analysis program. The comparison between experimental and numerical results show a good agreement. This meanline analysis program can be used for various types of single stage axial-flow compressors with different geometries, as well as multistage axial-flow compressors.