Aerodynamic Design and Numerical Study of a Propane-Refrigerant Centrifugal Compressor for LNG Plant

Title
Aerodynamic Design and Numerical Study of a Propane-Refrigerant Centrifugal Compressor for LNG Plant
Authors
박주훈이원석신유환김광호이윤표정진택
Keywords
Aerodynamic Design; Centrifugal Compressor; Tip Clearance; CFD; Propane Refrigerant; LNG Plnat
Issue Date
2011-08
Publisher
대한기계학회논문집 B권
Citation
VOL 35, NO 8, 781-787
Abstract
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.
URI
http://pubs.kist.re.kr/handle/201004/41776
ISSN
1226-4881
Appears in Collections:
KIST Publication > Article
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