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A proposed alternate form for the heat exchanger described in Problem 10.37 is shown in Fig. 10.33 The entire flow conduit is a %-in steel tube with a wall thickness of
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Applied Fluid Mechanics (7th Edition)
- Answer: 9.81psiarrow_forwardCompute the resulting pressure in kPa after a "real" diffuser in which the energy loss due to sudden enlargement is considered for the flow of water at 25°C from a 36 mm OD x 2.0 mm wall copper tube to an 85 mm OD x 2.5 mm wall copper tube, the pipes are the same elevation. The volume flow rate is 150 L/min and the pressure before the enlargement is 500.062 kPa. NB: OD = Outside Diameter, Wall refers to the pipe’s thickness (t) Hints: Obtain the specific weight of water for the given temperature from Appendix A (Table A.1). Obtain the resistance coefficient (K) for sudden enlargement from Table 10.3B in chapter 10. Instructions: Only express the areas in scientific notation to three decimal places but round off to three decimal places in normal number format where necessary throughout your calculations leading to the final answer and including the final answer for all other computations excluding the area.arrow_forwardSpecifications: The total length of pipe in the three inch branch is 10 ft, and the length of pipe in the one inch branch is 8 ft. Brine (sg=1.04, m=10-3Pa*s) flows at 250gpm through the entrance at point A. Assume fully turbulent flow in both branches (f=ft). Pipes are standard Schedule 40 steel pipes. Assume the globe valve is partially shut so its equivalent L/D is 1000. For Part 1 of this project, you are tasked with determining the following: The flow rate in both branches The pressure drop in both branches The overall resistance coefficientarrow_forward
- 5. A duct of 0.45 m diameter and 90 m long leads from a fan discharge chamber where the pressure is 15 mm of water to a plenum chamber where the pressure is 10 mm of water. In order to increase the flow, two alternatives are considered. One is to lay a duct of 0.3 m diameter and 90 m long in parallel with the duct of 0.45 m diameter. The other is to increase the diameter of 0.45 m diameter duct for the last 60 m length. Calculate the increased diameter so that this method gives the same flow as the 0.45 m and 0.3 m ducts in parallel. Assume that the pressures in the fan chamber and plenum chamber are unaffected by changes in the flow and consider duct friction losses only. The friction factor may be taken as 0.0o55. 6. A 0.3 m diameter circular duct carries standard air at a velocity of 360 m/min. It is replaced by a rectangular duct having the same pressure loss per unit length due to friction. Determine the dimensions of the rectangular duct if the aspect ratio is to be 1.5 for (a)…arrow_forwardA piping system is to be installed at place where the pump will transfer the fluid from tank A to tank B. There are two suggested piping designs available to carry the fluid efficiently. Compute and determine which of the available piping arrangement will experience the less pumping powerwith given flow conditions. Discuss the results. Flow conditions are same for both type of designs and given as: Pipe material: stainless steel Volume flow rate: 40 L/sec Assume the working fluid is water at standard atmosphere temperature and both tanks areopen to atmosphere. Pipe inlet is sharp-edged and bends are sharped without vanes. Elevations are as ?? = ?? ? and ?? = ?? ?arrow_forwardProblem 01 Find the least number of 150 mm diameter pipes required to transmit 170 kW to a machine 3.2 km from the power station, if the efficiency of transmission is to be 90 per cent and f= 0.0075. The feed pressure is 4800 kN/m². Collutate of Pipes required efficiency= Problem 02 A turbine of efficiency 78% is 750 m lower than the supply water source. The pipe supplying the turbine with water is 200 mm in diameter and 4,5 km long. Take f=0,008 and determine the maximum power output that can be expected from the turbine. Problem 03 A pipeline is 1800 m long and 375 mm in diameter, and supply head at inlet is 240 m. A nozzle with an effective diameter of 50 mm is fitted at the discharge end and has a coefficient of velocity of 0,972. If for the pipe is 0,005. (a) The velocity of the jet (b) The discharge (c) The power of the jet C1Regarrow_forward
- Using the velocity design method, determine the minimum required size of Type L copper tube supply pipes serving a hotel with a WSFU of 300. Use a maximum velocity of 7 ft/s. Minimum size:arrow_forward7arrow_forwardDetermine the smallest metric hydraulic copper tube size that will carry 4L/min of the following fluids while maintaining laminar flow: (a) water at 40°C, (b) gasoline (SG=0.68) 25°C, (c) ethyl alcohol (SG=0.79) at 0°C, and (d) heavy fuel oil at 25°C.arrow_forward
- Saturated water at 310K is being pumped from a tank to an elevated tank at the rate of 7L/s. All of the piping is in 5-in. schedule 40 steel pipe. If the 2 fittings used is 90° ell standard long radius, The pump has an efficiency of 80%. Calculate the kW power needed for the pump. * 125 m 12 m -5 1 50 m 5-in. pipe schedule pump Your answerarrow_forwardProblem 10.1 Water flows steadily through a 180° reducing pipe bend as shown in the figure (notice the transition from a larger diameter at section 1 to a smaller diameter at section 2). The atmospheric pressure outside the piping system is Patm = 100 kPa. The pipe bend is connected to the two pipes by flanges. The flanges are held together by flange bolts. Assume the density of water is 1000 kg/m³. At the inlet to the bend, the pressure is P₁ = 350 kPa, the pipe diameter is D₁ = 25 cm, and the water velocity is V₁ = 2.2 m/s. At the outlet of the bend, the pressure is P₂ = 120 kPa and the pipe diameter is D₂ = 8 cm. The weight of the pipe bend and the water in the bend may be neglected for this analysis. 1 5 G 2 (a) Determine the velocity of the water at the outlet (i.e., at Section 2). Hint: Use CoM principles (and don't forget to draw a system diagram!). (b) Draw appropriate system diagrams to determine the total force acting on the flanges (to keep the system in equilibrium). You…arrow_forwardSelect the proper-sized steel tube for a flowrate of 25 gpm and an operating pressure of 1,000 psi. The maximum recommended velocity is 20 ft/s and the factor of safety 8. The tube is made out of SAE 1010 with a tensile strength of 55,000 psi. TUBE ID WALL THICKNESS (in) WALL THICKNESS (in) (in) 0.055 TUBE TUBE ID (in) 0.430 0.402 0.370 OD (in) 7/8 0.310 TUBE WALL OD THICKNESS (in) (in) 1/8 0.035 3/16 1/4 5/16 3/8 0.035 0.035 0.049 0.065 0.035 0.049 0.065 0.035 0.049 0.065 0.118 0.180 0.152 0.120 0.243 0.215 0.183 0.305 0.277 0.245 TUBE OD (in) 1/2 5/8 3/4 0.035 0.049 0.065 0.095 0.035 0.049 0.065 0.095 0.049 0.065 0.109 0.555 0.527 0.495 0.435 1 1-1/4 0.652 0.620 0.532 1-1/2 0.049 0.065 0.109 0.049 0.065 0.120 0.065 0.095 0.120 0.065 0.095 TUBE ID (in) 0.777 0.745 0.657 0.902 0.870 0.760 1.120 1.060 1.010 1.370 1.310arrow_forward
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