References
[1] Giot M., “Three Phase Flow”, in “Handbook of Multiphase Systems”, G. Hetsroni, ed., Hemisphere- McGraw Hill, Washington, DC, 1982.
[2] Kato H., T. Miyazawa, S. Timaya and T. Iwasaki, “A Study of an Air lift Pump for Solid Particles”, Bull. JSME 18, 1975.
[3] Gibson A.H., “Hydraulics and its Applications”, 5th ed., Constable, London, 1961.
[4] Mero J.L., “Seafloor Minerals: A Chemical Engineering Challenge”, Chem. Eng., 43(2), 1968.
[5] Chisti Y., “Assure Bioreactor Sterility”, Chem. Eng. Prog., 88(9), September 1992.
[6] Tristam G. and S. Pigache, “Modeling and Simulation of a Large Scale Air lift Fermenter”, in “Proc. Eur. Symp. Comp.-Aid. Proc. Eng.-2”, 1992.
Tikrit Journal of Engineering Sciences (2009) 16(1) 63- 73
Effect of Suction Pipe Diameter and Submergence Ratio on Air Lift Pumping Rate
Salam J. AlMaliky | Hayder A. Alajawi |
Environmental Eng. Dept., Al-Mustansiriya University, Iraq | Materials Eng. Dept., Al-Mustansiriya University, Iraq |
Abstract
The increasingly importance for the uses of the air lift pump in widespread list of fields (mining, nuclear industries, agricultural uses, petroleum industries…etc.) makes it very interested for the researchers to find tools to raise the performance outcome of such pumps. An air lift pump system is setup to study the effect of the suction pipe diameter and submergence ratio on the liquid (water) pumping rate. The system has a lift pipe of (0.021 m) diameter and (1.25 m) length. Five diameters for the suction pipe (0.021, 0.027, 0.033, 0.048 and 0.063 m) with a fixed length of (0.3 m), are tested for each of the submergence ratios (0.2, 0.3, 0.4, 0.5) respectively. Results indicate that the higher the diameter of suction pipe is the higher the pumping rate for a fixed submergence ratio. From another side, the higher the submergence ratio is the higher the pumping rate for a fixed suction pipe diameter. Also, under high submergence ratios, high pumping rates are achieved by the use of lower air flow rates compared with those used with lower submergence ratios. The experimental results show good compatibility with the model suggested by Stenning and Martin for the performance of an air lift pump.
Download Full-Text PDF
Keywords: Internal Heat Exchanger, R134a, vapor Compression Refrigeration Cycle.