Pengaruh Jumlah Sudu Impeller Terhadap Debit Air yang Dihasilkan Pompa Sentrifugal The Effect of The Number of Impeller Blades on The Water Flow Produced by The Centrifugal Pump

Water is used in all aspects of life, namely agriculture, plantation, housing, industry, tourism. To get water, a pump is needed. The centrifugal pump is a pump that is often used. Centrifugal pump performance is influenced by the design of the impeller and pump casing. The pump blade design will increase the liquid pressure at various speeds, the force is converted to a rotating impeller inside the casing. The most influential factor is the impeller design such as the number of impeller blades. The purpose of this study was to obtain the water flow produced by the centrifugal pump, to obtain the difference in the highest and lowest water flow rates produced by the shimizu PS 128 BIT type centrifugal pump, with variations in the number of impeller blades 21, 26, 31, 36, and 41. The design process of impeller blades in this study uses Autodesk Fusion 360 software with adjustable sizes. Measuring instruments used in the testing process are flow meters, manometers, and laser photo tachometers that are attached to centrifugal pumps. The pump speed when testing was 2,948 to 2,959 Rpm. The test results using an open type impeller and the direction of the suction beside the impeller, the highest water discharge capacity at the impeller is 41.850 liters / minute. The highest water flow rate is 26.5 liters / minute at a pipe diameter of 3/4 inch. Meanwhile, the highest water pressure on the impeller is 2.2 kg / cm2.