compressor and centrifugal fan - website staff...
TRANSCRIPT
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Dr. Ir. Harinaldi, M.Eng, Dr.Ir budiarso M.Eng.Mechanical Engineering Department
Faculty of Engineering University of Indonesia
CoMPRESSoRAND CENTRIFUGAL FAN
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PRE-WHIRL AND INLET GUIDES VANES
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MACH NUMBER IN THE DIFFUSER
The absolute Mach number of the fluid leaving the impeller may well be in excess of 1. However, it has been found that as long as the radial flow velocity Cr2 is subsonic, then no loss in efficiency is caused by the formation of shock waves.
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The effect of inlet guide vanes on the inlet relaltive velocity:(a) at shroud; (b) at hub
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CENTRIFUGAL COMPRESSOR CHARACTERISTIC
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The theoretical centrifugal compressor characteristic
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SURGING
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ROTATING STALL
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Rotating stall propagation
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CHOCKING
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CHARACTERISTIC CURVE
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Typical centrifugal compressor characteristic
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