1) A reciprocating compressor has two stages with inlet air
going into LP stage at 1 bar, 16°C and at the rate of 12 m3/min.
Air is finally delivered at 7 bar and there is perfect intercooling
at optimum pressure between the stages. The index for compression
is 1.25 and compressor runs at 600 rpm. Neglecting clearance volume
determine intermediate pressure and total power required.
2) A reciprocating compressor of single stage and double acting
type has free air delivered...
A centrifugal compressor has 22 radial impellers with an
impeller exit radius of r2 = 0.25m.
Assuming the mass flow rate through the compressor is mdot =
10kg/s, the shaft speed is
omega = 10,000 rpm, and the inlet flow is swirl free,
calculate
a) the total shaft power Ps in kW
b) the total temperature rise (?Tt)in the compressor (assume ? =
1.4 and cp = 1004 J/(kg K))
Thermodynamics
The centrifugal compressor in a refrigeration system operating
at steady state conditions, compresses adiabatically 0.1 lbm/s of
saturated R-134a vapor at 0°F to 200 psia. Answer the
following.
a. Create a schematic representation of your system and draw the
boundary you would use to solve the questions in this problem.
b. Represent the process on a T-s diagram.
c. Calculate the minimum work required by this compressor, in
hp. Note: the solution to this problem requires interpolations; use
your...
1.
What are the differences between public and private accounting
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Propylene b compressed adiabatically from 113 bar and 30oC to I8 bar at the rate of 1 kg mol s-l. If the compressor efficiency is 0.8, what is the power requirement of the compressor and what is the discharge temperature of the propylene?