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http://dx.doi.org/10.3795/KSME-B.2013.37.9.837

Experimental Study of Performance and Bubble Pattern of Air-Lift Pumps with Various Tube Diameters and Submergence Ratios  

Kim, Seung Hwan (Dept. of Mechanical Engineering, Sejong Univ.)
Sohn, Chae Hoon (Dept. of Mechanical Engineering, Sejong Univ.)
Hwang, Jun Young (Korea Institute of Industrial Technology)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.37, no.9, 2013 , pp. 837-845 More about this Journal
Abstract
An airlift pump can be used to pump liquids and sediments within itself, which cannot easily be pumped up by a conventional method, by using the airlift effect. This characteristic of the airlift pump can be exploited in a DCFC (Direct Carbon Fuel Cell) so that molten fuel with high temperature may be carried or transported. The basic characteristics of airlift are investigated. A simple system is constructed, where the reservoir is filled with water, a tube is inserted, and air is supplied from the bottom of the tube. Then, water is lifted and its flow rate is measured. Bubble patterns in the tube are observed in a range of air flow rates with the parameters of the tube diameter and submergence ratio, leading to four distinct regimes. The pumping performance is predicted, and the correlation between the supplied gas flow rate and the induced flow rate of water is found.
Keywords
Airlift Pump; Two Phase Flow; Submergence Ratio; Tube Diameter;
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