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The velocity profile in fully developed laminar flow in a circular pipe of inner radius R = 3 cm, in m/s, is given by U (») = 4 (1-3). U = Determine the average and maximum velocities in the pipe and the volume flow rate. u (r) = 4 R2 TR The average velocity in the pipe is m/s. The maximum velocity in the pipe is m/s.
Question: Problem #2 5-6 Air enters a 16-cm-diameter pipe steadily at 200 kPa and 20°C with a velocity of 5 m/s. Air is heated as it flows, and it leaves the pipe at 180 kPa and 40°C. Determine (a) the volume flow rate of air at the inlet, (b) the mass flow rate of air, and (c) the velocity and volume flow rate at the exit.
Civil engineering expert. For fully developed laminar pipe flow in a circular pipe, the velocity profile is given by u (r) = 2 (1 - r^2/R^2) in m/s, where R it the inner radius of the pipe. Assuming that the pipe diameter it 4 cm, find the maximum and average velocities in the pipe as well as the volume flow rate.
Air enters the 1-m2 inlet of an aircraft engine at 100 kPa and 20°C with a velocity of 172 m/s. Determine the volume flow rate, in m3/s, at the engine's inlet and the mass flow rate, in kg/s, at the engine's exit. The gas constant of air is R= 0.287 kPa-m3/kg.K. The volume flow rate at the engine's inlet m3/s.
Transcribed image text: Refrigerant-134a enters a 28-cm diameter pipe steadily at 200 kPa and 20degree C with a velocity of 5 m/s. The refrigerant gains heat as it flows and leaves the pipe at 180 kPa and 40degree C. Determine the volume flow rate of the refrigerant at the inlet, the mas flow rate of the refrigerant, and the velocity and volume ...
4.21 Saturated liquid R-410A at 25°C is throttled to 400 kPa in a refrigerator. What is the exit temperature? Find the percent increase in the volume-flow rate. sketch the throttle, label the incoming and exiting properties. Use the first law for throttles: they are isenthalpic , sketch the process on a P-v diagram with vapor dome and solve.
Transcribed image text: Steam enters a nozzle at 400°C and 800 kPa with a velocity of 10 m/s and leaves at 375°C and 400 kPa while losing heat at a rate of 26.5 kW. For an inlet area of 800 cm2, determine the velocity and the volume flow rate of the steam at the nozzle exit. Use steam tables. 400°C 800 kPa 10 ms Steam 375°C 400 kPa 0 The ...
Mechanical Engineering. Mechanical Engineering questions and answers. 6.62 Calculate the volume flow rate of water at 5 C through the system shown in Fig. 6.21. 6.63 Calculate the pressure required in the larger section just ahead of the nozzle in Fig. 6.22 to produce a jet velocity of 75 ft/s. The fluid is water at 180°F 35-mm diameter Flow 3 ...
If the density of air inside is 1.20 kg/m3, determine the mass of air vented out in one day. The ventilating fan of the bathroom of a building has a volume flow rate of 30 L/s and runs continuously. If the density of air inside is 1.20 kg/m3, determine the mass of air vented out in one day. There are 2 steps to solve this one.
Refrigerant-134a enters an adiabatic compressor at 15 psia and 20°F with a volume flow rate of 10 ft3/s and leaves at a pressure of 100 psia. The power input to the compressor is 45.50 hp. The specific volume and enthalpy are 3.2551 ft3/lbm and 107.52 Btu/lbm. Use data from the tables.Find the exit temperature.