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http://dx.doi.org/10.5293/IJFMS.2016.9.3.205

Efficiency Increase and Input Power Decrease of Converted Prototype Pump Performance  

Oshima, Masao (Formerly Department of Mechanical Engineering, Kanagawa Institute of Technology)
Publication Information
International Journal of Fluid Machinery and Systems / v.9, no.3, 2016 , pp. 205-212 More about this Journal
Abstract
The performance of a prototype pump converted from that of its model pump shows an increase in efficiency brought about by a decrease in friction loss. As the friction force working on impeller blades causes partial peripheral motion on the outlet flow from the impeller, the increase in the prototype's efficiency causes also a decrease in its input power. This paper discusses results of analyses on the behavior of the theoretical head or input power of a prototype pump. The equation of friction-drag coefficient for a flat plate was applied for the analysis of hydraulic loss in impeller blade passages. It was revealed that the friction-drag of a flat plate could be, to a certain degree, substituted for the friction drag of impeller blades, i.e. as a means for analyzing the relationship between a prototype pump's efficiency increase and input power decrease.
Keywords
Performance conversion; Model pump; Efficiency increase; Input power decrease; Scale effect;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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