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ISSN Online: 2379-1748

ISBN Flash Drive: 978-1-56700-472-4

ISBN Online: 978-1-56700-471-7

3rd Thermal and Fluids Engineering Conference (TFEC)
March, 4–7, 2018, Fort Lauderdale, FL, USA

ASSESSING THE PERFORMANCE OF THREE DIFFERENT TYPE OF DIFFUSERS FOR A CENTRIFUGAL COMPRESSOR APPLICATIONS

Get access (open in a dialog) pages 377-390
DOI: 10.1615/TFEC2018.cmd.021415

要約

The two major components of a centrifugal compressor stage are the impeller and the diffuser. Usually the choice of diffuser type used to be limited to vaneless and vaned diffusers. But in recent times a third class of diffuser, known as Low Solidity Vaned Diffuser, hereafter called LSVD, has appeared as a third choice. The LSVD is characterized by having few vanes, no throat and short vane length (chord). LSVD diffusers have no actual channel in the diffuser. On one hand, they tend to widen the stable operating range at low flow rates, while, on the other hand, they widen it compared with conventional vaned diffusers at high flow rates at the same time offering higher efficiencies than the vanless diffuser. Thus, based on analytical and experimental results, this paper assesses the development trend of diffuser design and performance of centrifugal compressors, driven by high efficiency and wide operating flow range needs.