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Research Article Open Access
The current study of fitting the inlet guide vanes at the entrance of centrifugal fan impeller is to resolve the non uniformity of the flow and to get rid of the vortices that are generated by the existence of inlet distortion. The main purpose of this work is to evaluate the use of the inlet guide vanes (IGV) made of sheet metal and fiber reinforced plastic to improve the fan performance and saving of energy. For this purpose the ring of blades in radial direction i.e. Radial cascade, with different exit blade angles of impellers is used. Comparison with free inlet (without IGV) fans is performed. Measurement of static head, shaft power and energy savings at different loads are made for dissimilar cases. The study of these measurements gives some information concerning the operating range and how energy could be saved in V.A.V. (variable air volume) system in air conditioning. By using the above method the overall size of the fan could be reduced.
Centrifugal fan, VAV, FRP, IGV., Aerospace Engineering,Applied Sciences,Biochemistry,Biogenetic Engineering,Bio medical Engineering,Botany,Fluid Dynamics.