Centrifugal Pump Performance Experiment Presented by: Steven King ME 498 Senior lab November 16, 2004

Overview of Presentation Objectives Objectives Methodology and Background Methodology and Background Experimental Setup Experimental Setup Discussion of Results Discussion of Results Conclusions and Recommendations Conclusions and Recommendations

Objectives Become familiar with centrifugal pump operation Become familiar with centrifugal pump operation Analyze the principles of fluid flow at 5 different shaft speeds Analyze the principles of fluid flow at 5 different shaft speeds Evaluate pump performance Evaluate pump performance

Methodology and Background Key Equations Key Equations Assumptions: Β =.75, ρ =998, and μ =9.55x10-4 Δ P and was recorded during experiment. (1) (2) (3) (4) (5) 0

Methodology and Background Cont. Affinity Laws Affinity Laws Key Equations Continued  Key Equations Continued (6) (7)

Experimental Setup Overall System Schematic

Experimental Setup Cont.

= 1.5 in = 2 in Venturi Flow Meter

Results Uncertainty Values for Experiment Uncertainty Values for Experiment wQ = 38.0% wQ = 38.0% wη = 39.7% wη = 39.7%  Affinity Law Results Value found from Experiment Calculated Using Affinity Laws % Difference 1165 RPM Q (m 3 /s) 5.61E E P (W) Hp (m) RPM Q (m 3 /s) 7.49E E P (W) Hp (m)

Results Cont.

Conclusions and Recommendations All R 2 were above.95 with most being above.99 All R 2 were above.95 with most being above.99 The best overall efficiency was approximately 70% for an RPM of 1530 The best overall efficiency was approximately 70% for an RPM of 1530 The use of pressure gauges and dynamometer that are less affected by vibration would improve results The use of pressure gauges and dynamometer that are less affected by vibration would improve results A more accurate method of recording voltage and current would also improve the results A more accurate method of recording voltage and current would also improve the results