A centrifugal compressor has the following operating characteristics: mass flow rate=9 kg/sec Slip factor = 0.9 Rotational speed = 290 rev/sec Impeller diameter = 0.5m Eye tip diameter = 0.3m Eye root diameter = 0.15m Inlet stagnation temperature = 295K Inlet stagnation pressure = 1.1 bar Overall isentropic efficiency = 0.78 Determine the following: a) compressor pressure ratio, b) inlet power required assuming no swirl at the inlet, c) the inlet angle of the impeller vanes at the root and tip of the eye assuming the inlet velocity is constant across the eye annulus, d) the exit flow velocity,

A centrifugal compressor has the following operating characteristics: mass flow rate=9 kg/sec Slip factor = 0.9 Rotational speed = 290 rev/sec Impeller diameter = 0.5m Eye tip diameter = 0.3m Eye root diameter = 0.15m Inlet stagnation temperature = 295K Inlet stagnation pressure = 1.1 bar Overall isentropic efficiency = 0.78 Determine the following: a) compressor pressure ratio, b) inlet power required assuming no swirl at the inlet, c) the inlet angle of the impeller vanes at the root and tip of the eye assuming the inlet velocity is constant across the eye annulus, d) the exit flow velocity,

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Assuming the clearance is negligible for a single stage compressor with the following data.Atmospheric pressure: 90 kPaAtmospheric temperature: 17 ˚CDelivery pressure: 7 barFree air delivery flow rate: 0.2 m3/minTake “n” as 1.3, cp = 1.005 kJ/kg K, cv = 0.718 kJ/kg K 1.What is the power input to the compressor in kW to 3 decimal places if the compression reversible isothermal?
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