Mechanical Engineering :: Compressors,Gas Dynamics and Gas Turbines
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The overall isothermal efficiency of the compressor is defined as the ratio of
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The minimum work required for a three stage reciprocating air compressor is __________ the work required for each stage.
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For a multi-stage compressor, the polytropic efficiency is constant throughout for all the stages.
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In a high pressure compressor, the delivery pressure is
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When the outlet angle from the rotor of a centrifugal compressor is more than 90°, then the blades are said to be
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In axial flow compressors, the flow of air is parallel to the axis of compressor.
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The ratio of the isothermal power to the shaft power or brake power of the motor or engine required to drive the compressor is called overall isothermal efficiency.
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In a double acting compressor, the air is compressed
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In a centrifugal compressor, the flow of air is __________ to the axis of compressor.
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A.
work required to compress the air isothermally to the actual work required to compress the air for the same pressure ratio
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B.
isothermal power to the shaft power or B.P. of the motor or engine required to drive the compressor
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C.
volume of free air delivery per stroke to the swept volume of the piston
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D.
isentropic power to the power required to drive the compressor
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