Abstract
Fans are one of the types of turbo machinery which are used to move air continuously with slight increase in static pressure. Fans are widely used in industrial and commercial applications from shop ventilation to material handling, boiler applications, transporting gas or materials and most use in the HVAC industry today. In this paper it describes the different techniques which may help to increase the pressure of air. Flow in centrifugal impeller is simulated by Navier-stokes eq. and performance curved is obtained. The experimental data has been collected from Industry. Now the parameter considered is number of blade, inlet and outlet angle, diameter ratio Performance analysis has been carried out by experimental and ANSYS CFX software. It observed that number of blade increase, so that reduce in flow passage and more enlarged flow developed. Finally, the result of this total pressure and efficiency increase compared with original centrifugal fan.
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