DEVELOPMENT AND TESTING OF PUMPING SYSTEMS POWERED BY KINETIC ENERGY OF WATER

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Date
2019
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Indira Gandhi Krishi Vishwavidyalaya, Raipur
Abstract
An experiment was conducted on “Development and Testing of Pumping Systems Powered by Kinetic Energy of Water” at Department of Soil and Water Engineering, SVCAET & RS, Indira Gandhi Krishi Vishvavidyalaya, Raipur (C.G.). The study aims at development of pumping systems based on kinetic energy of water, performance evaluation of developed systems for lifting and carrying water and economical evaluation of developed pumping systems. Kinetic energy of water powered pumping systems is a cheap, efficient and precise way of delivering water to farm pond/open well from nearby canal or nallah. The pumping system is simple to develop, install, operated and very much cater to the need of rural remote area. It may be suitable for un-electrified as well as unreliable electric supply area. Two different types of pumping system viz. cup type water wheel pumping system (CTWWPS) and spiral tube water wheel pumping system (STWWPS) have been developed. The major components of cup type water wheel pumping system include cart wheel, axel, cups, bearing, hub pulley and belt. The cups were mounted on the periphery of wheel and fixed over the frame. The power from the wheel is transferred to the pulley of pump. Flowing water pushes the cup, hence, the wheel is rotated and so the pulley of the pump. The speed up from wheel to pump pulley is 13 times. Hence, with 100 rpm of wheel the pump pulley will generate 1300 rpm. This creates vacuum and the centrifugal pump was operated. Similarly, the major components of spiral tube water wheel pumping system includes rim, inlet valve, housing, flexible pipe, block bearing, tee joint, union and valve. Tube is fixed spirally in a wheel having rectangular plates in its periphery. The flowing water pushes the plates hence the wheel rotates. One end of tube is fixed with a large diameter inlet valve while the other end is attached in a housing at the centre of the pumping system. Water enters from the inlet side and because of rotation of wheel, the water moves spirally inside the tube. The water reaches the centre of housing while the succeeding water pushes the preceding to go ahead; this way the water comes out from the housing, which is delivered toward the outlet. Measurement of flowing water in a canal/nallah was carried out using parshall flume. It is an accurate measurement of free flow of water and determines the discharge and velocity of water. The kinetic energy of water was used to operate the pumping system. The cup type water wheel pumping system was developed with a plate frame of 1.3 m to 0.84 m (length and height), water wheel 0.66 m diameter, axel 0.50 m and centrifugal pump of 1 hp.The spiral tube water wheel pumping system was developed with a frame 0.71 m, spiral water wheel 0.63 m diameter, housing pipe 0.74 m length, and overall height of pumping system is 0.98 m. Testing and performance evaluation of pumping system was done at nallah of fisheries check dam at Krishi Vigyan Kendra, Raipur, I.G.K.V., Raipur (C.G.) and Mandher Branch Canal Tulasi (C.G.) and other suitable locations of nearby canal command area. Observation was taken on head (depth of water) in flowing water, flow rate and velocity of water, mass and kinetic energy, suction and delivery head, rpm of wheel, total head and distance carrying of water. Testing of cup type water wheel pumping system was analysed for lifting and carrying water. The performance of cup type water wheel pumping system (CTWWPS) was evaluated at different suction head and delivery head combination. The result shows that the pumping system is useful in lifting and carrying water with the power of flowing water. CTWWPS gave a discharge 0.178 to 0.378 lps at suction head of 0.56 m to 0.25 m and delivery head of 1.30 m to 0.70 m under 0.23 m to 0.59 m of head over the flume. While spiral tube gave a discharge of 0.05 to 0.193 lps at 0.30 to 0.46 m of water depth with flow velocity of 0.54 ms-1 to 0.41 ms-1 . The developed system can be used to pump small portion of flowing water from canal/nallah to nearby pond/open well using kinetic energy of flowing water only, provided sufficient operating head and velocity is available at specific site.
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DEVELOPMENT AND TESTING OF PUMPING SYSTEMS POWERED BY KINETIC ENERGY OF WATER
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