Park, J.H. Lee, W.S. Shin, Y.H. Kim, K.H. Lee, Y.P. Chung, J.T. 2024-01-20T16:33:49Z 2024-01-20T16:33:49Z 2021-09-02 2011-08 1226-4881 https://pubs.kist.re.kr/handle/201004/130159 We design a four-stage propane-refrigerant centrifugal compressor for an LNG plant. Using a commercial code, we aerodynamically designed the compressor at each design point of the corresponding stages. We estimated the one-dimensional aerodynamic design output and the three-dimensional shape of the impeller flow passage via three-dimensional flow analysis. In particular, we discuss in detail the flow characteristics of the impeller and the vaneless diffuser passages of the fourth-stage compressor in terms of the velocity fields, the pressure, and the entropy distributions of the flow passages. We include the flow effects of the tip clearance flow, because at this stage the rotating speed and total inlet pressure are higher than those at the other compressor stages are. We carried out performance tests of the designed compressor stages using propane as a refrigerant in the LNG cycle. The practical evaluation could lead to design enhancements in the future. ？ 2011 The Korean Society of Mechanical Engineers. Korean Aerodynamic designs Commercial codes Compressor stage Design enhancement Design points Entropy distribution Flow characteristic Flow effects Flow passage Impeller flow Inlet pressures LNG plant Numerical studies Performance tests Rotating speed Three-dimensional flow analysis Three-dimensional shape Tip clearance Tip clearance flow Vaneless diffuser Velocity field Aerodynamics Centrifugation Centrifuges Compressors Design Impellers Inlet flow Propane Refrigerants Three dimensional Velocity Centrifugal compressors Aerodynamic design and numerical study of a propane-refrigerant centrifugal compressor for LNG plant Article 10.3795/KSME-B.2011.35.8.781 1 Transactions of the Korean Society of Mechanical Engineers, B, v.35, no.8, pp.781 - 787 Transactions of the Korean Society of Mechanical Engineers, B 35 8 781 787 scopus kci ART001573490 2-s2.0-80052000337 Article Aerodynamic designs Commercial codes Compressor stage Design enhancement Design points Entropy distribution Flow characteristic Flow effects Flow passage Impeller flow Inlet pressures LNG plant Numerical studies Performance tests Rotating speed Three-dimensional flow analysis Three-dimensional shape Tip clearance Tip clearance flow Vaneless diffuser Velocity field Aerodynamics Centrifugation Centrifuges Compressors Design Impellers Inlet flow Propane Refrigerants Three dimensional Velocity Centrifugal compressors Aerodynamic design Centrifugal compressors CFD Propane refrigerant Tip Clearance