Development of methodology for characteristic curves prediction in regenerative pumps.
DOI:
https://doi.org/10.15649/2346030X.756Keywords:
Energy balance; Fluid dynamics; Methodology; Model; PumpAbstract
Rotodynamic pumps have presented a very significant development in recent years. Therefore, its implementation has been
widely diversified in industrial and home applications. The modification of working parameters defines regenerative pump features and directly
affects its energy efficiency. On the other hand, characteristic curves determine the hydraulic behavior of a regenerative pump, and they are also
used to define the optimal operation point and select an adequate pump depending on the working conditions of a hydraulic system. In this
paper, a methodology is presented to adjust the theoretical curve of the regenerative rotodynamic pump using factors that influence in its
development; physical limitations presented during the operation pump are considered due to they affect the accuracy of the model description.
Euler equation is used to determine a set of correlations that describe the real behavior of the regenerative pump taking into account the blade
absolute velocity and the peripheral component of the flow velocity which interact with the impeller; then, generated data are used to compare
the flow velocity equation defined with the geometric characterization of regenerative pump available in the market. Lastly, a modification in
the Euler theoretical equation was developed to predict the real curve of the regenerative pump, an agreement less than 5 percent was reached.
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