Hostname: page-component-cd9895bd7-gxg78 Total loading time: 0 Render date: 2024-12-29T04:14:00.007Z Has data issue: false hasContentIssue false
  • English
  • Français

Improvement of Centrifugal Pump Performance by Using Different Impeller Diffuser Angles with and Without Vanes

Published online by Cambridge University Press:  28 August 2018

D. Khoeini ,
E. Shirani  and
M. Joghataei
D. Khoeini*
Affiliation:
Department of Mechanical Engineering Isfahan University of Technology Isfahan, Iran
E. Shirani
Affiliation:
Department of Mechanical Engineering Foolad Institute of Technology Isfahan, Iran
M. Joghataei
Affiliation:
Department of Textile Engineering Isfahan University of Technology Isfahan, Iran
*
* Corresponding author (D.Khoeeni@me.iut.ac.ir)
Get access

Abstract

This study aims at improving the performance of a centrifugal pump by using different angular diffusers on the downstream side of the centrifugal pump impeller. Numerical and experimental studies have been carried out on different vaned and non-vaned diffuser with three different wall divergence angle (α) of 0°, 5° and 10° to achieve that purpose. The data analyses show good agreement between the numerical and experimental results. They reveal profound effect of the divergence angle (α) of angular vaned diffuser on the head and overall efficiency of centrifugal pumps especially at high flow rates as they broaden operating region of the centrifugal pump. In fact it is found that the head and overall efficiency of impeller with vaned diffuser α = 10° enhance by 15.4 and 9 percent respectively compared to that of centrifugal pump with no vaned diffuser at high flow rates. Furthermore the head and overall efficiency of impeller with vaned diffuser α = 10° increase by 5.7 and 7 percent respectively in comparison with the impeller with vaned diffuser α = 0°.

Keywords

Centrifugal pumpPerformance enhancementAngular vaned diffuserAngular non- vaned diffuser
Type
Research Article
Information
Journal of Mechanics , Volume 35 , Issue 4 , August 2019 , pp. 577 - 589
Copyright
© The Society of Theoretical and Applied Mechanics 2018 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Khoeini, D. and Shirani, E., “Enhancement of a Centrifugal Pump Performance by Simultaneous Use of Splitter Blades and Angular Impeller Diffuser,” International Journal of Fluid Machinery and Systems, 11, pp. 191–204 (2018).CrossRefGoogle Scholar
Khoeini, D. and Tavakoli, M. R., “The Optimum Position of Impeller Splitter Blades of a Centrifugal Pump Equipped with Vaned Diffuser,” FME Transactions, 46, pp. 205–210 (2018).Google Scholar
Khoeini, D. and Tavakoli, M. R., “Flow Characteristics of a Centrifugal Pump with Different Impeller Trimming Methods,” FME Transactions, 46, pp. 463–468 (2018).CrossRefGoogle Scholar
Shankar, V. K., Umashankar, S., Paramasivam, S. and Hanigovszki, N., “A Comprehensive Review on Energy Efficiency Enhancement Initiatives in Centrifugal Pumping System,” Applied Energy, 181, pp. 495–513 (2016).CrossRefGoogle Scholar
Olszewski, P., “Genetic Optimization and Experimental Verification of Complex Parallel Pumping Station with Centrifugal Pumps,” Applied Energy, 178, pp. 527–539 (2016).CrossRefGoogle Scholar
Wang, C. et al., “Optimal Design of Multistage Centrifugal Pump Based on the Combined Energy Loss Model and Computational Fluid Dynamics,” Applied Energy, 187, pp. 10–26 (2017).CrossRefGoogle Scholar
Zhang, Z., Kusiak, A., Zeng, Y. and Wei, X., “Modeling and Optimization of a Wastewater Pumping System with Data-Mining Methods,” Appllid Energy, 164, pp. 303–311 (2016).CrossRefGoogle Scholar
Zhang, Z., Zeng, Y. and Kusiak, A., “Minimizing Pump Energy in a Wastewater Processing Plant,” Energy, 47, 505–514 (2012).CrossRefGoogle Scholar
Savar, M., Kozmar, H. and Sutlovic, I., “Improving Centrifugal Pump Efficiency by Impeller Trimming,” Desalination, 249, pp. 654–659 (2009).CrossRefGoogle Scholar
Singh, G. and Mitchell, J. W., “Energy Savings from Pump Impeller Trimming,” ASHRAE Journal, 40, pp. 60–63 (1998).Google Scholar
Khoeini, D., Riasi, A. and Shahmoradi, A., “Effects of Volute Throat Enlargement and Fluid Viscosity on the Performance of an Over Hung Centrifugal Pump,” International Journal of Fluid Machinery and Systems, 10, pp. 30–39 (2017).CrossRefGoogle Scholar
Dong, R., Chu, S. and Katz, J., “Effect of Modification to Tongue and Impeller Geometry on Unsteady Flow, Pressure Fluctuations, and Noise in a Centrifugal Pump,” Journal of Turbomachines, 119, pp. 506–515 (1997).CrossRefGoogle Scholar
Zhu, X., Li, G., Jiang, W. and Fu, L., “Experimental and Numerical Investigation on Application of Half Vane Diffusers for Centrifugal Pump,” International Communications in Heat and Mass Transfer, 79, pp. 114–127 (2016).CrossRefGoogle Scholar
Stel, H. et al., “Numerical Analysis of the Fluid Flow in the First Stage of a Two-Stage Centrifugal Pump With a Vaned Diffuser,” Journal of Fluids Engineering, 135 (2013).CrossRefGoogle Scholar
Gaetani, P., Boccazzi, A. and Sala, R., “Low Field in the Vaned Diffuser of a Centrifugal Pump at Different Vane Setting Angles,” Journal of Fluids Engineering, 134 (2012).CrossRefGoogle Scholar
Zhou, L., Shi, W. and Lu, W., “Numerical Investigations and Performance Experiments of a Deep-Well Centrifugal Pump with Different Diffusers,” Journal of Fluids Engineering, 134 (2012).CrossRefGoogle Scholar
Atif, A., Benmansour, S., Bois, G. and Dupont, P., “Numerical and Experimental Comparison of the Vaned Diffuser Interaction Inside the Impeller Velocity Field of a Centrifugal Pump,” SCIENCE CHINA Technology Science, 54, pp. 286–294 (2011).CrossRefGoogle Scholar
Goel, T., Dorney, D. J., Haftka, R. T. and Wei, S., “Improving the Hydrodynamic Performance of Diffuser Vanes via Shape Optimization,” Compuers and Fluids, 37, pp. 705–723 (2008).CrossRefGoogle Scholar
Furukawa, A., Takahara, H., Nakagawa, T. and Ono, Y., “Pressure Fluctuation in a Vaned Diffuser Downstream from a Centrifugal Pump Impeller,” International Journal of Rotating Machinery, 9, pp. 285–292 (2003).CrossRefGoogle Scholar
Agrawal, N., Agrawal, K. and Mhaske, S., “Experimental Investigation of Rotor-Stator Interaction in a Centrifugal Pump with Several Vaned Diffusers,” Journal of Turbomachies, 13, pp. 1–6 (1990).Google Scholar
Lobanoff, V. S., Ross, R. R., Centrifugal pumps: design and application, Gulf Professional Publishing, Huston (1992).Google Scholar
Karassik, I. J., Messina, J. P., Cooper, P. and Heald, C.C., Pump Handbook, McGraw (2004).Google Scholar
API standard 610, Centrifugal Pumps for Petroleum, Petrochemical and Natural Gas Industries, 10th ed (2004).Google Scholar
ISO Recommendation R 781, Measurement of Fluid Flow by Means Tubes, 1st ed. (1968).Google Scholar
Moffat, R. J., “Contributions to the Theory of Single-Sample Uncertainty,” ASME Journal of Fluids and Engineering, 104, pp. 250–260 (1982).CrossRefGoogle Scholar
Barn Menter, F. R., “Two-Equation Eddy-Viscosity Turbulence Models for Engineering Applications,” AIAA Journal, 32, pp. 1598–1605 (1994).CrossRefGoogle Scholar
Gao, Z. X. et al., “Numerical and Experimental Study of Unsteady Flow in a Large Centrifugal Pump With Stay Vanes,” ASME Journal of Fluids and Engineering, 136, 071101 (2014).CrossRefGoogle Scholar