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TECHNICAL PAPERS

Operation Performance of a Small Air-Lift Pump for Conveying Solid Particles

[+] Author and Article Information
Hitoshi Fujimoto

Department of Energy Science and Technology, Graduate School of Energy Science, Kyoto University, Kyoto 606-8501, Japan

Satoshi Ogawa

Graduate Student at Kyoto University (Presently, Toyota Motor Corp.)

Hirohiko Takuda

Department of Energy Science and Technology, Graduate School of Energy Science, Kyoto University, Kyoto 606-8501, Japan

Natsuo Hatta

Department of Civil Engineering, Nippon-Bunri University, Oita, Japan

J. Energy Resour. Technol 125(1), 17-25 (Mar 14, 2003) (9 pages) doi:10.1115/1.1514498 History: Received June 01, 2001; Revised June 01, 2002; Online March 14, 2003
Copyright © 2003 by ASME
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References

Figures

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Schematic of experimental apparatus (a), and the gas injector attached to the lifting pipe (b).
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Effect of the gas injection method on pump performance
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Time evolution of relative pressure in the chamber (a), frequency analysis of pressure in the chamber for two-phase (b) and three-phase flows(c), and signal output from hot-film flow meter (d). Note that the measurement accuracy of the pressure is within plus or minus 1 kPa.
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Performance curves of the air lift pump for gas-liquid two-phase flows
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Relation between injected gas flux and discharged water flux (a), and between injected gas flux and mass flow rate of particles in the case where the solid particles are alumina of diameter 3 mm and the gas injection point is 270 mm. Note that the measurement uncertainty for Ms is within ±0.002 kg/s.
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Relation between maximum mass flow rate of particles and the injected gas flux for several experimental conditions. Note that the measurement uncertainty for Ms is within ±0.002 kg/s.
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Performance curves of the air-lift pump for conveying solid particles for various conditions
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Comparison of experimental minimum water fluxes and predictions for Lg=1300 mm.

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