Effect of Flow Parameters on Pelton Turbine Performance by Using Different Nozzles

Abstract

See, stats, and : https : / / www . researchgate . net / publication / 317977833 Effect Performance Article DOI : 10 . 7763 / IJMO . 2017 . V7 . 571 CITATIONS 0 READS 1 , 492 2 , including : Some : The BIM Saif University , Iraq 53 SEE All . The .  Abstract—The aim of this paper is to investigate experimentally the effect of different nozzles , water head and discharge on the performance of Pelton turbine system . The effect of five different nozzles with outlet diameters of (3 . 61 , 5 . 19 , 8 . 87 , 12 , and 14 . 8) mm has been studied . The tip and hub diameter of the Pelton wheel of (269 . 89 , 221 . 29) mm has been used with different nozzles . A water pump was used to generated the pressure head and volume flow rate . The results show for every certain nozzle that when decreasing the water head lead to reduction in water discharge and this caused reduction in the torque , brake power , efficiency and the rotational speed . In addition , the results show that when increasing in nozzle diameter lead to increasing the discharge and reduction water head . While in the case of constant head of 15 m , the results show that the nozzle with diameter 8 . 87mm give the best the performance than the others , where the percentage increase in torque , brake power , efficiency and the rotational speed of the turbine are (62 . 2% , 66 . 48% , 60% , and 15 . 35%) respectively with the second nozzle with diameter of 5 . 19 mm .