Find the mass flow rate of air

Assignment Help Mechanical Engineering

Reference no: EM13707377

A centrifugal compressor has 23 radial vanes and an exit area equal to 0.12 m2, where the radial velocity is 27 m/s, and the tip speed of the impeller is 350 m/s. The total-to-total efficiency is 0.83. (a) Find the mass flow rate of air, given that the total pressure and temperature are 101.3 kPa and 298 K at the inlet, (b) What is the exit Mach number? (c) If the blade height at the exit is b = 3 cm and there is no leakage flow, what is the tip radius of the impeller? (d) Find the rotational speed of the compressor wheel, and the required power neglecting mechanical losses.

Reference no: EM13707377

Questions Cloud

Find the specific enthalpy : Find the specific enthalpy of R22 at 28 oC and a specific internal energy of 120.58 kJ/kg. Evaluate T, v, and h for water at 1.0 MPa and a specific internal energy of 2692.9 kJ/kg. Consider water at a state fixed by a pressure equal to 20 lbf/in.2 an..

Mixture is heated and expands at constant pressure : A piston-cylinder assembly contains a two-phase liquid-vapor mixture of H2O at 160 lbf/in^2 with a quality of 70%. The mixture is heated and expands at constant pressure until a final temperature of 480oF is reached. Determine the work for the proces..

Steam engine functions by converting liquid water to steam : A steam engine functions by converting liquid water to steam, which is then used to drive a rotating shaft. This engine contains 2 engineering devices: the boiler where the liquid water is converted to steam and the turbine where the steam is used to..

Calculate the appropriate speed and table feed rate : Calculate the appropriate speed (in RPM) and table feed rate (in inches per minute) for face milling 1212 steel (Hb 125) with a 3 inch diameter, 8 tooth, coated carbide cutter. The part is only 2 inches across (this is relevant for selecting the radi..

Find the mass flow rate of air : A centrifugal compressor has 23 radial vanes and an exit area equal to 0.12 m2, where the radial velocity is 27 m/s, and the tip speed of the impeller is 350 m/s. The total-to-total efficiency is 0.83.

Nitrogen in piston-cylinder assembly undergoes : Nitrogen in a piston-cylinder assembly undergoes a polytropic expansion process. Initially, nitrogen is at 125 C and 144 kPa. Then it is expanded to a state of 102 kPa and 90 C. determine the heat transfer and work for the process considering no chan..

Determine the electric current in the wire : A current carrying 10 gauge (.1013-in dia) copper wire is insulated with a .05 in thick layer of rubber. The maximum temperature of thr rubber is 200F when the temperature of the air is 120F. The external heat transfer coefficient can be taken as 4 B..

What is the composition of the liquid phase : At a given temperature, a hypothetical isomorphous A-B alloy of composition 40wt% B - 60wt% A is found to be 66wt% (B) alpha phase and 34wt% liquid phase, L. If the composition of the alpha phase is 13wt% B - 87wt% A, what is the composition of the l..

Piston on the air during the compression stroke : At the beginning of the compression stroke, the volume of a certain diesel engine cylinder is 1.000 liter and it is filled with air at 300 K and 100 kPa absolute. At the end of the compression stroke the air is at 800 K and 4280 kPa absolute.

User Account

All Pages