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