Effect of helical inducer usage on both performance and Npsh For A centrifugal pump

Abstract

ABSTRACT Centrifugal pumps consume the equivalent of one fifth of the total energy consumption around the world. Also, increasing the requirement for fresh water negatively affects water levels from its various sources such as rivers, canals, and groundwater. As normal, this reduces the possibility of normal operation of some pump stations, and usually, this occurs as a result of the low suction level for these stations. Moreover, some other pump stations are affected by its operation efficiency i.e. decreases performance quality, each according to the value of the suction level decreasing. Therefore, the most effect parameter on the pump performance at the suction side of the centrifugal pump is defined as the Net Positive Suction Head (NPSH). However, using inducer at the suction side of the operating pump can improve its performance. Thus, the behavior of NPSH and the total performance of a centrifugal pump are experimentally and numerically studded. In addition to, the NPSH performance is determined using the NPSH test and improved by 3% at 2900 rpm with using the inducer at the operating point, and the performance of the pump is monitored at the low and high discharges value.