It is known that the compression work of gases can be largely reduced by inter-stage cooling. Multistage radial compressors have been developed in the past with coolers integrated within the casing. Such a solution, however, is limited to medium volume flows of about 40 m3/s. For larger flows, a combination comprising an axial low pressure section with variable guide vanes for flow regulation, used as supercharger, followed by a multistage radial section with integrated coolers, has been developed. The major parameters governing this choice are presented. Aerodynamic tests on the axial and radial sections have been carried out with a special emphasis on the aerodynamic layout of the diffusor connecting the axial or the radial sections to the coolers. The tests have shown that a considerable amount of aerodynamic improvement could be obtained by a proper disposition of asymmetrical guide vanes dividing the total flow going to the coolers placed symmetrically on each side of the casing. Test results on the complete machine, regarding its aerodynamic characteristics and the noise level as well as its mechanical behavior, are given.
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ASME 1974 International Gas Turbine Conference and Products Show
March 30–April 4, 1974
Zurich, Switzerland
Conference Sponsors:
- International Gas Turbine Institute
ISBN:
978-0-7918-7979-5
PROCEEDINGS PAPER
A New Axial-Radial “Isotherm” Compressor
R. A. Strub
R. A. Strub
Brown Boveri-Sulzer Turbomachinery Ltd., Zurich, Switzerland
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R. A. Strub
Brown Boveri-Sulzer Turbomachinery Ltd., Zurich, Switzerland
Paper No:
74-GT-141, V01BT02A058; 9 pages
Published Online:
April 22, 2015
Citation
Strub, RA. "A New Axial-Radial “Isotherm” Compressor." Proceedings of the ASME 1974 International Gas Turbine Conference and Products Show. Volume 1B: General. Zurich, Switzerland. March 30–April 4, 1974. V01BT02A058. ASME. https://doi.org/10.1115/74-GT-141
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