ABSTRACT
The demand of national economy is energy. Centrifugal water pumps are being used in several applications from household usage to the industrial operations so efficiency enhancement is the major concern in the developing research. The efficiency of the centrifugal water pump is enhanced by using inlet guided vanes (IGV) in its suction pipe which generates the pre-whirling of water before entering into the centrifugal pump. Numerically and experimentally examined its performance at different angles of (IGV) and done experiments having a variety of flow rates. The results obtained from experiments evinced that head can be altered by using (IGV). Efficiencies are observed at different angles 0°, 30°, 45°, 60°of pre-whirling of water. The performance curves were obtained at different conditions of operations. Experimental results revealed that (IGV) decline the cavitation in centrifugal water pump and augment the efficiency of centrifugal water pump at the 30° best angle of pre-whirling.
