1. Fluid Mechanics and Applications Inter American Chapter 7 MEEN 3110 – Fluid Mechanics and Applications Fall - 2010 Lecture 07 CENTRIFUGAL PUMP CHARACTERISTICS

2. 7. Centrifugal Pump Characteristics Fluid Mechanics and Applications Inter American Chapter Objectives  Up on completion of this lecture, the student will be able to: Perform experiments to determine the characteristic curves for a centrifugal pump operating at three different speeds and calculate efficiencies to determine the optimal operation points of the pump.

3. 7. Centrifugal Pump Characteristics Fluid Mechanics and Applications Inter American 7.1 Theory

4. 7. Centrifugal Pump Characteristics Fluid Mechanics and Applications Inter American 7.1 Theory Conversion of Kinetic Energy to Pressure Energy The head (pressure in terms of height of liquid) developed is approximately equal to the velocity energy at the periphery of the impeller expressed by the following well-known formula:

5. 7. Centrifugal Pump Characteristics Fluid Mechanics and Applications Inter American 7.2 General Components of Centrifugal Pumps

6. 7. Centrifugal Pump Characteristics Fluid Mechanics and Applications Inter American 7.3 Definition of Important Terms

7. 7. Centrifugal Pump Characteristics Fluid Mechanics and Applications Inter American 7.3 Definition of Important Terms

8. 7. Centrifugal Pump Characteristics Fluid Mechanics and Applications Inter American 7.3 Definition of Important Terms

9. 7. Centrifugal Pump Characteristics Fluid Mechanics and Applications Inter American 7.3 Definition of Important Terms

10. 7. Centrifugal Pump Characteristics Fluid Mechanics and Applications Inter American 7.3 Definition of Important Terms

11. 7. Centrifugal Pump Characteristics Fluid Mechanics and Applications Inter American 7.3 Definition of Important Terms

12. 7. Centrifugal Pump Characteristics Fluid Mechanics and Applications Inter American 7.3 Definition of Important Terms

13. 7. Centrifugal Pump Characteristics Fluid Mechanics and Applications Inter American 7.3 Definition of Important Terms

14. 7. Centrifugal Pump Characteristics Fluid Mechanics and Applications Inter American 7.3 Definition of Important Terms

15. 7. Centrifugal Pump Characteristics Fluid Mechanics and Applications Inter American 7.3 Definition of Important Terms

16. 7. Centrifugal Pump Characteristics Fluid Mechanics and Applications Inter American 7.3 Definition of Important Terms

17. 7. Centrifugal Pump Characteristics Fluid Mechanics and Applications Inter American 7.4 Performance Curve A pump's performance is shown in its characteristics performance curve where its capacity i.e. flow rate is plotted against its developed head. The pump performance curve also shows:  Best efficiency point (BEP)  Required input power (in BHP Brake horse power).  Net Positive Suction Head Required or Available (NPSHr or NPSHa)  Speed (in RPM) Pump curves are based on a specific gravity of 1.0. Other specific gravities must be considered by the user.

18. 7. Centrifugal Pump Characteristics Fluid Mechanics and Applications Inter American 7.5 Equipment GH5 Series – Tutor Pumps and Turbines http://www.yes01.co.kr/resite/yes01/tq/products/gh5.htm