Hydraulic efficiencies of impeller and pump obtained by means of theoretical calculations and laboratory measurements for high speed impeller pump with open-flow impeller with radial blades

The article discusses the results of measurements of parameters of a high speed impeller pump with open-flow impeller having radial blades. The method of calculating the hydraulic efficiency of the pump and an impeller was proposed on basis on laboratory measurements. Using the results of measurements of pressure in the space around the open-flow impeller with radial blades the hydraulic efficiency of pump and impeller were calculated.