Research Article
A Comparative Study of Impeller Modification Techniques on the Performance of the Pump as a Turbine
Table 5
Comparison of the modification techniques.
| | Modification type | Power (W) | Efficiency (%) |
| | Initial blade (unmodified) | 850.33 | 65.15 | | Increasing the number of blades | 902.00 (5.72%) | 69.94 (6.85%) | | Decreasing blade thickness | 861.06 (1.24%) | 66.89 (2.60%) | | Blade tip rounding | 864.30 (1.61%) | 68.34 (4.66%) | | Blade inlet angles | 875.44 (2.86%) | 69.58 (6.36%) | | Blade grooving | 895.24 (5.01%) | 70.06 (7.00%) | | Simultaneous | 950.83 (10.56%) | 72.55 (10.20%) |
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