Abstract:

Parallel to the increase in population and industrialization, everyday increasing need for electricity makes it necessary to use the existing energy more efficiently. Therefore, in this study, the effects on the pump capacity and efficiency by covering the wet surfaces in such a way that hydrophobic properties are given without changing the current design of a centrifugal type of pump wheel were experimentally studied. The wet surfaces of the wheel are covered with 3 different carbon-based polymer materials, including floroidethylpropylene (FEP), perfloroalcox (PFA) and polytraflorethylene (PTFE). The contact angle of the covered surfaces is measured by 105o, 110o and 95o respectively and hydrophobicity is determined. Experimentally, the pump performance curves were achieved and the hydrophobic wheel surfaces reduced the pump specific speed by about 10 percent compared to the uncovered conventional wheel, thus increasing its capacity by 10 percent and its efficiency by about 5 percent, 5.3 percent and 4 percent respectively.

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