Experimental and Performance Analysis of Single Nozzle Jet Pump with Various Mixing Tubes

Abstract

Water is central to survival, without water human, plant and animal life would be impossible. Therefore supply of water has become one of the fundamental requirements of any society and the need to transfer water has generated the design of various forms of mechanical devices, which can be categorized as pumps. Jet pump is a device that performs its pumping action by the transfer of energy from a high velocity supply jet to one of low velocity suction flow. These two flows mix in the mixing tube and the kinetic energy of the combined flow is converted partially into the pressure energy in the diffuser. The optimization of the design of single hole nozzle jet pump with various area ratios and five different diameter mixing tubes. For each of the mixing tube, experiments were conducted for two more distances above and the one used for the first set of experiments. The spacing was increased using 2 (6 mm) gaskets for one distance and 3 (9 mm) gaskets for another distance. The area ratios chosen have been modified and the final area ratios used were R = 0.20, 0.28, 0.36, 0.43 & 0.50. Discharge ratios (M), Head ratio (N), Efficiency (ɳ) were used to draw performance curves. Experiments were done for all other area ratios as spacing is increasing there is an increase in efficiency.