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RESEARCH PAPERS

Effects of Splitter Blades on Deep Well Pump Performance

[+] Author and Article Information
M. Gölcü1

 Pamukkale University, Mechanical Education Department, Kinikli, Denizli, Turkeymgolcu@pau.edu.tr

N. Usta

 Pamukkale University, Mechanical Engineering Department, Camlik, Denizli, Turkey

Y. Pancar

 Osman Gazi University, Mechanical Engineering Department, Eskisehir, Turkey

1

Corresponding author. E-mail: mgolcu@pau.edu.tr (M. Gölcü)

J. Energy Resour. Technol 129(3), 169-176 (Jan 18, 2007) (8 pages) doi:10.1115/1.2748810 History: Received May 20, 2005; Revised January 18, 2007

Impellers with splitter blades have been used in turbomachinery design for both pumps and compressors. Increasing the number of blades increases the head of the pump, however, it causes a decrease in efficiency due to the blockage effect of the blade thickness and friction. The impellers with splitter blades between two long blades can be used to alleviate the serious clogging at the inlet of the impeller caused by more blades. In this study, impellers having a different number of blades (z=3, 4, 5, 6, and 7) with and without splitter blades (25, 35, 50, 60, and 80% of the main blade length) were tested in a deep well pump. The effects of the main blade number and lengths of splitter blades on the pump performance have been investigated. While the number of main blades and the lengths of the splitter blades of a principal impeller were changed, the other parameters such as pump casing, blade inlet and outlet angles, blade thickness, impeller inlet and outlet diameters, were kept the same.

FIGURES IN THIS ARTICLE
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Copyright © 2007 by American Society of Mechanical Engineers
Topics: Impellers , Blades , Pumps
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References

Figures

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Figure 1

Deep well pump test rig (not scale)

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Figure 2

The dimensions of the principal impeller

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Figure 3

An impeller (z=5) with splitter blades (Ls=0.35L)

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Figure 4

Impeller (z=5) models

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Figure 5

(a)Hm-Q, (b)Pe-Q and (c)ηg-Q characteristics of impellers with different number of blades

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Figure 6

(a)Hm-Q, (b)Pe-Q, and (c)ηg-Q characteristics of the impeller (z=3) with different lengths of splitter blades

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Figure 7

(a)Hm-Q(b)Pe-Q, and (c)ηg-Q characteristics of the impeller (z=4) with different lengths of splitter blades

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Figure 8

(a)Hm-Q, (b)Pe-Q, and (c)ηg-Q characteristics of the impeller (z=5) with different lengths of splitter blades

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Figure 9

(a)Hm-Q, (b)Pe-Q, and (c)ηg-Q characteristics of the impeller (z=6) with different lengths of splitter blades

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Figure 10

(a)Hm-Q, (b)Pe-Q, and (c)ηg-Q, characteristics of the impeller (z=7) with different lengths of splitter blades

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Figure 11

Variation of head versus factors

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Figure 12

Variation of power versus factors

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Figure 13

Variation of efficiency versus factors

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