Assuming 80% efficiency, 100 m³/sec of design discharge, and 100 m of design head, what will be the approximate electrical power producted?
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- 2. If the velocity of flow in a 75-mm diameter fire hose is 0.5 m/s, what is the velocity in a diameter 25 mm of a jet issuing from a nozzle attached at the end of the pipe. Compute also the power available in the jet.discharge through a pumb is 10 m3/sec and the total head is 100 ft.so calculate the unit power of pump would beA pump operating at 1800rpm delivers 600 gpm against a total head of 200ft. Changes in the piping system have increased the total head to 260ft. At what rpm should the pump operated to achieve this new head at the same efficiency?
- Please include a diagram. Thank you! You have a piping system in your plant that has gotten old and rusty. The pipe is 2-in. sched 40 steel, 6000 ft long. You find that it takes 35 hp to pump water through the system at a rate of 100 gpm. a. What is the equivalent roughness of the pipe?b. If you replace the pipe with the same size new commercial steel pipe, what percentage savings in the required power would you expect at a flow rate of 100 gpm?What is the energy loss through a length of pipe from which all the discharge is taken out uniformly along its length, with respect to the case when all the discharge is delivered to the end?Cooling water for a chemical plant must be pumped from a river 2,500 ft from the plant site. A preliminary design calls for a flow rate of 600 gpm and a 6" steel pipe. Calculate the pressure drop and the annual pumping costs if power costs 3 cents per kilowatt hour. Would the use of an 8" steel pipe reduce the power cost enough to offset the increased pipe cost? Assume $15/ft for the installed cost of 6" pipe and $20/ft for the installed cost of 8" pipe. Annual charges are estimated at 20% of the installed cost.
- Problem T3 If the shaft power is 82kw and the cost of the electricity is $0.10 kwh; estimate the cost of the electricity for one hour. Answer $8.2Water at 50°F is pumped from a lake at 750 gpm through a length of 3-inch schedule 40 commercial steel pipe as shown below. The inlet to the pipe is eight feet below the surface of the lake. A 25-HP gasoline engine drives the pump and the pump has an efficiency of 80% What is the Reynolds number in the pipe? Is the flow laminar or turbulent? What is the head added to the water by the pump? What is the head loss due to pipe friction?What is the required pump power (Pa) for the system below? The source reservoir is on the right side of the figure The outflow is released as a water jet to the atmosphere (on the left) Discharge rate is 0.11 m3/s Pipe total length is 180 m Pipe diameter is 0.2 m Friction factor (f) is 0.01 Minor losses are negligibleCHOOSE ONE: 25 KiloWatt 169 KiloWatt 269 KiloWatt 112 KiloWatt
- A very long garden hose has an internal vol- ume of 2.7 gal. If the garden hose is initially empty, and the faucet is opened instanta- neously to produce a flowrate of 1.6 gal/min, how long does it take to fill the garden hose and a 5-gallon bucket?Gasoline flows in a 10 cm -diameter galvanized iron pipe at 0.005 m/s. Determine the head loss per one meter unit length and 100 m length of this flow?Problem 3 Water (20°C) is pumped through the 300-mm steel pipe from the lower tank to the upper one at a rate of 0.4 m³/s. Given that the pump efficiency is 65% and the pump is on for 5 hours each day, what will be the monthly (30 days) energy cost for the pump if the electricity rate is 0.5 USD per kWh? Assume α = 1.0 throughout. Elevation=235 m 10 m 50 m Elevation 200 m = 300 mm r = 300 mm 100 m