Chapter 6, Problem 6.103P

Air with a mass flow rate of 2.3 kg/s enters a horizontal nozzle operating at steady state at 420 K, 350 kPa, and velocity of 11 m/s. At the exit, the temperature is 300 K and the velocity is 460 m/s. Using the ideal gas model for air with constant c, = 1.011 kJ/kg · K, determine: (a) the area at the inlet, in m?. (b) the heat transfer to the nozzle from its surroundings, in kW. Part A Determine the area at the inlet, in m2. A1 = i m2

Air enters a diffuser operating at steady state at 645°R, 15 Ibf/in.?, with a velocity of 600 ft/s, and exits with a velocity of 60 ft/s. The ratio of the exit area to the inlet area is 1o. Assuming the ideal gas model for the air and ignoring heat transfer, determine the temperature, in °R, and pressure, in Ibf/in.?, at the exit.

At steady state, air at 200 kPa, 330 K, and mass flow rate of 0.9 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. Part A Determine the velocity of the air at the inlet, in m/s. V₁ = i Save for Later m/s Attempts: 0 of 5 used Part B The parts of this question must be completed in order. This part will be available when you complete the part above. Part C The parts of this question must be completed in order. This part will be available when you complete the part above. Submit Answer