Comparative Performance Analysis of Backward Inclined and Radial Impeller of the Centrifugal Blower

In this paper, the comparative performance analysis of backward inclined impeller with radial impeller on the performance of centrifugal blower has been investigated. The radial impeller manufactured in this work is of same dimensions as of backward inclined impeller of the centrifugal blower. with 280 mm outer diameter, 140 mm inner diameter with 12 number of blades. Performance parameters such as flow rate, total pressure, air power and blower efficiency are computed for backward inclined impeller as well as radial impeller of centrifugal blowers. The experimental facility was developed to test the blower according to IS: 4894-1987. The results indicated that backward inclined impeller of centrifugal blower has high efficiency as compared to radial impeller at different speeds. The performance of radial impeller was less as compared to backward inclined impeller of centrifugal blower in terms of flow rate, blower efficiency and total pressure.