Design & Analysis Of Mechanism For Upstream Control Of Air Volume Using Inlet Guide Valve In Centrifugal Air Compressor
Abstract—The cost and performance of Inlet Guide Valve are optimized with designing new efficient mechanism for their
actuation. Whirl motion is obtained by using variable inlet guide vanes, located upstream the air compressor in order to realize
an angular deviation of the absolute velocity of the fluid at the leading edge of impeller. Inlet Guide Valve is an umbrella term
which comprises both inlet Guide Vanes and the mechanism to actuate them. Inlet guide vanes provide an efficient method of
turndown for centrifugal compressors. Guide vanes not only provide the inlet pressure drop but also impart a whirl motion to
the gas as it enters the compressor impeller. Since this whirl motion is in the rotational direction of the impeller, it reduces the
amount of work the impeller is required to do on the gas. It is this whirl motion that results in energy savings at the design
Different iterations of mechanism design for actuation of IGV have been included in this research paper. The designs are
then analyzed on factors such as economic viability, simplicity of operation & manufacturing, maintenance requirement etc.
to find the best feasible design for air volume control.