0
Research Papers: Multiphase Flows

The Effect of Air Injection Method on the Airlift Pump Performance

[+] Author and Article Information
Dong Hu1

Modern Jetting Department,  Hunan University of Technology, Wenhua Road, Zhuzhou City, Hunan Province, China, 412008hudong_9@126.com

Chuan-Lin Tang

Modern Jetting Department,  Hunan University of Technology, Wenhua Road, Zhuzhou City, Hunan Province, China, 412008TCL5608@126.com

Shu-Peng Cai

Modern Jetting Department,  Hunan University of Technology, Wenhua Road, Zhuzhou City, Hunan Province, China, 412008windowscsp@sina.com

Feng-Hua Zhang

Modern Jetting Department,  Hunan University of Technology, Wenhua Road, Zhuzhou City, Hunan Province, China, 412008fenghua387@126.com

1

Corresponding author.

J. Fluids Eng 134(11), 111302 (Oct 24, 2012) (7 pages) doi:10.1115/1.4007592 History: Received January 10, 2012; Revised August 30, 2012; Published October 24, 2012

With simple structure, excellent reliability, low cost, no restriction at depth of water, and easy control and operation, airlift pumps have special advantage in borehole hydraulic jet mining, river dredging and deep sea mining. To clarify the mechanism and process of action of air injection methods on air lift performance, and to enhance lifting capacity, the pump performance of a small airlift system in transporting river sands is investigated experimentally in the present study. The results are as the follows. The influences of air exit ports on water volume flow rate, mass flow rate of solids and lifting efficiency are studied and found to be very low when the number of air exit ports exceeds 3. The pump design show best pumping capability for water and solids at higher air flow rates, but the lifting efficiency is then very low. In addition, a dimensionless equation which describes the flows in the pipe is presented based on the Bernoulli equation, and compared with measurement results in the dimensionless form, which are nearly in good agreement with each other for all the arrangements of air exit ports and are basically contained within ±18% of the theoretical curve. The results are important for understanding the mechanism of airlift pumps and enriching multiphase flow theory.

FIGURES IN THIS ARTICLE
<>
Copyright © 2012 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Figure 1

Schematic of experimental setup

Grahic Jump Location
Figure 2

The relation between wet and dry sand

Grahic Jump Location
Figure 3

Schematic of air injector

Grahic Jump Location
Figure 4

Arrangements of the chassis

Grahic Jump Location
Figure 5

Relations between water volume flow rate and air flow rate for different numbers of air exit port

Grahic Jump Location
Figure 6

Relations between mass flow rate of solids and air flow rate for different numbers of air exit port

Grahic Jump Location
Figure 7

Relations between lifting efficiency and air flow rate for different numbers of air exit port

Grahic Jump Location
Figure 8

Diagram of a typical airlift pump

Grahic Jump Location
Figure 9

Comparison between the experimental results and the theoretical model

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In