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A tube bank uses an aligned arrangement of 30-mm-diameter tubes with
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- An oil with density of 900 kg/m3 and ? = 0.0002 m2/s flows upward through a 10 m long pipe segment inclined at 40° with the horizontal. The pressures at the upstream and downstream end of the pipe are 350 kPa and 250 kPa, respectively. The diameter of the pipe is 60 mm. Assume the flow is laminar. 1. The head loss along the pipe segment 2. Velocity of flow 3. Reynold’s numberarrow_forwardAn oil has 0.62 inch steel tube, through which flows an oil. The properties of oil are as follows; μ = 0.034 lbs/ft-sec, μb = 0.044 lbs/ft-sec, μw = 0.004 lbs/ft-sec, and specific gravity at 60°F is 0.899. The oil neters at a temperature of t1 = 60°F and flows with an average velocity of 4 ft/sec. The inside ssurface area is 0.1613 ft2 per feet length, and the inside sectional area is 0.3019 in2. The length of one pass of the tube is 10 feet. Considering steam at 215°F surround the tubes. Assume that the inside surface temperature of the pipe is 210°F and a bulk temperature of 72°F. If the specific heat of oil is 0.5 btu/lbs-°F and its conductivity k = 0.08 Btu-ft/hr-F-ft2, what is the temperature at the end of 10 feet pass. Show your complete solution and illustration.arrow_forwardA 1.3m length of horizontal pipe has a radius of 6.4 x 10-3m. Water within the pipe flows with a volume flow rate of 9.0 x 10-3m3/s out of the right end of the pipe into the air. What is the pressure in the flowing water at the left end of the pipe if the water behaves as (a) an ideal fluid and (b) a viscous fluid (=1.00 x 10-3Pa.s)?arrow_forward
- Pressure Drop of Power-Law Fluid in Laminar FlowA power-law fluid having a density of 1041 kg/m3 is flowing through 14.9 m of a tubing with an inside diameter of 0.0524 m at an average velocity of 0.0728 m/s. The rheological or flow properties of the fluid are K′ = 15.23N·sn′/m2 (0.318 lbf·sn′/ft2) and n′ = 0.40. Calculate the pressure drop and friction loss using Eq. (9.1-10) for laminar flow. Check the generalized Reynolds number to make sure that the flow is laminar. Repeat part (a) but use the friction-factor methodarrow_forwardA horizontal fan (such as that shown in example 5.24) pulls in stagnant air (ie. basically stationary air) atatmospheric pressure; the air approaches the fan outlet with speed 44 ft/sec (ie. 30 mph) and with static pressure 0.3 psi. The air flowing through the fan can be assumed to have a constant density of 2.4*10-3 slug/ft3. The air losses due to friction are 0.1 psi (or 6000 ft-lb/slug of air passing from the fan inlet to the outlet). a) Determine the shaft work in ft-lb/slug b) If the fan outlet area is 2 ft2, determine the rate of work on the air.arrow_forwardWater at 20°C is pumped at a constant rate of 9 m3/h from a large reservoir resting on the floor to the open top of an experimental absorption tower. The point of discharge is 5 m above the floor, and friction losses in the 50-mm pipe from the reservoir to the tower amount to 2.5 J/kg. At what height in the reservoir must the water level be kept if the pump can deliver only 0.1 kW?In this problem, we can assume that the surface of the large reservoir and the absorption tower is at atmospheric pressure, show the complete mechanical energy balance describing the flow system? Take the floor to be at 0 height.arrow_forward
- Water flows through pipe A whose diameter is 30 cm and into parallel pipes 1, 2 and 3 and out through Pipe B (diameter= 30 cm). The properties of the pipe are as follows: for pipe 1, L= 300 m, diameter = 10 cm f= 0.020; for pipe 2 L= 240 m diameter= 15 cm f= 0.018 and for pipe 3, L= 600 deiameter= 20 cm f= 0.017. The upstram junction has an Elev. 90 m with pressure of 205 kPa; the downstream junction is at Elev. 30 m. If the average velocity in pipe A is 3.0 m/s, find the pressure at downstream junction B.arrow_forwardWater at 25°C is flowing through an elliptical conduit with semi-axis a = 4 and b = 3. What is the Reynolds Number of this flow if water is flowing at 9 m/s?arrow_forwardAir flows upward at a volumetric flow rate of 0.045 m3/s through an inclined pipe whose diameter is reduced through a reducer. The differential height between fluid levels of the two arms of a water manometer attached across the reducer is to be determined. The diameter at cross-section 1 is 0.06 m, and 0.04 m at cross-section 2. The atmospheric pressure is 110 kPa, and the air temperature is 50°. Hint: A differential height between points 1 and 2 has not been specified. What assumption can you make?arrow_forward
- A pump is being used to transport a liquid food product (density = 1000 Kg/m3, viscosity= 1.2 x 10 -3 Pa-s) from a holding tank to a filling machine at a mass flow rate of 2 Kg/s. The liquid level at the holding tank is 5 m above the pump, and the filling machine is 10 m above the pump. There is 100 m of 2 inch nominal diameter sanitary pipeline (assume: commercial steel) between the holding tank and the filling machine with one open glove valve and three medium sweep 90oelbows in the system. Determine the theoretical power requirement of the pump if the efficiency is 75%. Answer: 234 Watts. Show the solution.arrow_forwardConsider laminar flow through a very long straight section of round pipe, that the velocity profile through a cross-sectional area of the pipe is parabolic with the axial velocity component given by V = 2Vavg(1 − r2/R2) where R is the radius of the inner wall of the pipe and Vavg is the average velocity. Calculate the momentum-flux correction factor through a cross section of the pipe for the case in which the pipe flow rep resents an outlet of the control volumearrow_forwardDistribution of cooled air in air conditioning system is done by installation of Galvanised Iron (GI) ducting as shown by Figure Q4(a). Air enters a rectangular duct of cross section 20 cm X 30 cm at 1 atm and the temperature of 20 °C. The average velocity of the air inside the ducting is5.0 m/s. The length of the duct is 15 m. Given, ε for GI = 0.000045 m.Disregarding the entrance effect, calculate:(i) The pressure drop(ii) The head lossarrow_forward
- Principles of Heat Transfer (Activate Learning wi...Mechanical EngineeringISBN:9781305387102Author:Kreith, Frank; Manglik, Raj M.Publisher:Cengage Learning