小型遠心ポンプの羽根出口角が円板摩擦損失に及ぼす影響

抄録

It is known that in centrifugal pumps, when the specific speed is below 100, leakage loss and disk friction loss increase, causing a significant decrease in efficiency. On the other hand, mini centrifugal pumps with a diameter of 100 mm or less are thought to be more affected by disk friction loss than conventional centrifugal pumps with a diameter of 100 mm or more. Therefore, we evaluated disk friction loss for two types of mini centrifugal pumps with different impeller diameters and a specific speed of around 200. In this study, we investigated the effect of the blade outlet angle of a mini centrifugal pump on disk friction loss.