0.37 A simple heat exchanger is turn bend on two -in Schedule 40 steel pipes as showr in Fig. 10.32. Compute the pressure difference between the inlet and the outlet for a flow rate of 12.5 gal/min o
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- A 6-nominal schedule 80 cast iron pipe is 3500 m long. It is to convey octane at a flow rate of 0.02 m3/s. Determinethe pressure drop of the octane.A pump station has been designed to lift water out of a 6 metre deep pit (vented to atmosphere) via a centrifugal pump mounted at ground level. Liquid conditions 20°C Suction pipe work losses 2.0 metres NPSH safety factor 5.0 kPa Vapor pressure @ 20oC 0.25 metres a) Calculate the Net Positive Suction Head (NPSH) for the system. b) In summer the liquid temperature rises to 60 oC, this changes the water vapor pressure to 2.05 metres. What is the revised NPSH for the higher water temperature? For the NPSH result from part (b) what increase in suction pipe work size is required to have a positive NPSH result as calculated in part (a).Calculate the minimum velocity of flow in ft/s of water at 160°F in a 2-in steel tube with a wall thickness of 0.065 in for which the flow is turbulent.
- PROBLEM 02: Water entering a pump through an 200mm diameter pipe at 27.6 kPa has a flow rate of 0.1 m^3/s. It leaves the pump through a 100mm diameter pipe at 103.4 kPa. Assuming that the suction and discharge sides of the pump are at the same elevation, find the horsepower delivered to the water by the pump (746 watts = 1 HP). Illustrate the problem and show your complete solution.The lengths of two pipes with the same friction factor, "f," are parallel. What must the flow ratio be if the first pipe has twice the diameter of the second?Provide solutions A penstock with a diameter of 4 ft and length of 225 ft carries water (γ = 62.4 lbf/ft3) through a 200 ft drop from a reservoir to a turbine. The penstock entrance is 10 ft below the water surface. The flow rate through the system is 500 cfs and water exits the turbine in a free jet with a velocity of 9 ft/s. The Darcy-Weisbach friction factor for the penstock is 0.01. Flow is turbulent and head losses at the entrances and exits of the penstock and turbine are negligible. (a) Draw the hydraulic grade line and energy grade line. Label transitions points with the height change using symbols (e.g. hL for pipe head loss) (b) Determine the head delivered to the turbine by the water in ft.(c) If the turbine and generator have a combined efficiency of 80%, determine the power in hp generated by the system.
- Design a simple piping system to pump water at temperature 130F from a sump below a heat exchange to the top of the cooling. The desired flow rate is 222gal/min, and the pump efficiency is 88%. Include the required power and head loss of the pump and the total head loss.Calculate the power supplied to the pump shown if its efficiency is 75%. Water is at 25 degrees Celsius is flowing at the rate of 50.0 m3/h. The suction linf is a standard DN 100 Schedule 40 steel pip, 15m long. The total length of DN 50 Schedule 40 steel pipe in the discharge line is 200m. The elbows are tight, the entrance to the pipe is flush and the globe valve is completely open. Draw the line of total and piezometric heights.A pump, for which the characteristic curve is shown below, is used to pump water from a canal into a dam. The pump is mounted 2.0 m above the water level. There is a 50 mm PVC pipe connected to the suction side of the pump, and a 40 mm PVC pipe connected to the discharge side. The total length of pipe on the suction side is 8 m, and there is a strainer (K = 20), a non-return valve, a 90° elbow and a fully open gate ball valve in the suction line. Another fully open gate valve, and two 90° elbows are mounted in the discharge line. The total length of the discharge line is 60 m, and the discharge pipe outlet is 4 m above the pump. You may assume a water temperature of 25 °C. Determine: (a) The flow rate through the system(b) The required fluid power(c) The efficiency of the pump(d) Whether the pump will cavitate or not.
- Hello, i have an example question with an answer already given. Please help me in finding its solution so i can review and see the process and understand the concept. Thank you very much1.Question: Water at 15°C is pumped from a reservior at a rate of 0.1131 m3/s where the local atmospheric pressure is 94.6 kPa. The total head loss in the suction pipe is 1 m. From the manufacturer data, the NPSHrequired at this operating point is 7.8. Determine the maximum height hs (meters) before cavitation can occur. Round off your answer to 3 decimal places.Answer: 0.669Q/ Discuss the relation between the head pressure and flow rate for the benefits of connecting the pumps in series?Convert 50 GPM to ft/s in a 4" Sch 40 pipe