Physics

Physics, 06.09.2019 22:20, doversu

Air flows through a duct of constant cross-sectional area a=0.1m2 . at a certain point ‘x’ in the duct, the pressure is measured at 1.5 bar, the temperature is 100°c, and the air velocity is 100 m/s. at another point ‘y’, the pressure has dropped to 1.4 bar, and the velocity of the air is now 171.4 m/s. you may assume that the flow is frictionless.
1. using the data recorded at point x, calculate the mass flowrate of air in the duct
2. calculate the temperature at point y
3. write the steady flow energy equation out in full, and then simplify it to calculate the heat added to the air between points x and y

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Engineering, 04.07.2019 19:20, rida10309

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Engineering, 29.10.2019 23:31, karmaxnagisa20

At steady state, air at 200 kpa, 330 k, and mass flow rate of 0.5 kg/s enters an insulated duct having differing inlet and exit cross-sectional areas. the inlet cross-sectional area is 6 cm2. at the duct exit, the pressure of the air is 100 kpa and the velocity is 250 m/s. neglecting potential energy effects and modeling air as an ideal gas with constant cp = 1.008 kj/kg · k, determine: (a) the velocity of the air at the inlet, in m/s. (b) the temperature of the air at the exit, in k. (c) the exit cross-sectional area, in cm2.

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Air flows through a duct of constant cross-sectional area a=0.1m2 . at a certain point ‘x’ in the du...

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