A mixture of CO2 and O2 at 100 kPa and 25°C enter a rigid vessel containing a ne

Question

A mixture of CO2 and O2 at 100 kPa and 25°C enter a rigid vessel containing a new membrane designed to separate gases. The molar flow rate of each species is 1 kmol/s. The two species exit in separate streams, each at 100 kPa and 25° C and a flow rate of 1 kmol/s. No heat or work is transferred to the control volume, and the system is at steady state. The universal gas constant is 8.314 kJ/kmol-K 2 02 + CO2 T = 25°C P, = 100 kPa 25°C 2 P2 100 kPa 1 CO 2 = 25°C 3 P3 100 kPa Show if this process is possible or not. [20 points]

Explanation / Answer

A)

We know that Mach 1 =760 mph

So aircraft flying at mach 1.2 at sea level = 1.2*760= 912 mph

we know that As altitude increases, air temperature decreases. The speed of sound in air varies directly with temperature, so as temperature decreases the velocity of the sound decreases.

hence the Aircraft at a 30000 feet has a less velocity when compared to flight at near sea-level.

b)

convergent divergent duct in which the flow is supersonic everywhere with Ma decreasing in the convergent part and increasing in the divergent part and again Ma 1 at the throat

to 532 mph.

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