Performance of Very Low Specific Speed Centrifugal Pumps with Circular Casing

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概要

• 論文の詳細を見る

• Efficiency of a centrifugal pump is known to drop rapidly with a decrease of specific speed ns in the range of ns ≦ 100 [m,m3/min,min-1]. However, below ns = 60, the pump efficiency is not yet clear, and the spiral angle of a volute casing becomes too small to manufacture. To solve this problem, a circular casing is considered appropriate in the very low ns range. The present study is aimed to reveal the relation between pump efficiency and a specific speed in the range of ns ≦ 60, when a circular casing is used. The results show that a circular casing gives higher efficiency than a spiral casing, and that radial thrust is considerably small in both casings compared with that of ordinary specific speed pump.

• Japan Society of Mechanical Engineersの論文

著者

• KUROKAWA Junichi

  Faculty of Engineering, Yokohama National University

• MATSUI Jun

  Faculty of Science and Engineering, Konan University

• KAGAWA Shusaku

  Graduate School of Engineering, Yokohama National University

• CHOI Young-Do

  Industry-Academic Cooperation Foundation, Korea Maritime University

• Kurokawa Junichi

  Faculty Of Engineering Yokohama National University

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