Optimization of Suction Channel for Improving Performance of Process Centrifugal Compressor

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  • 吸込流路の最適化によるプロセス遠心圧縮機の効率向上
  • スイコミ リュウロ ノ サイテキカ ニ ヨル プロセス エンシン アッシュクキ ノ コウリツ コウジョウ

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Description

Design parameters for a suction channel of process centrifugal compressors were investigated, and an optimizing method to improve efficiency by using the new design parameters was proposed. Both pressure loss and circumferential flow distortion in the suction channel were evaluated by using computational fluid dynamics. The passage sectional area ratios Ac/Ae, Ae/As, and Ac/As were found to be the dominant parameters for the pressure loss and circumferential flow distortion, where Ac, Ae and As are passage sectional areas for the casing upstream side, casing entrance and impeller eye, respectively. The shape of the suction channel was optimized by using the new design parameters. In order to evaluate improvement effect of this optimizing method on stage efficiency, base and optimized types were manufactured and tested. Test results showed that the optimized suction channel achieved 3.8％ higher stage efficiency than the base one while maintaining the operating range.

Journal

  • Turbomachinery

    Turbomachinery 38 (8), 456-463, 2010

    Turbomachinery Society of Japan

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