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Professor Crocker is building a cabin on a hillside and has proposed the water system shown in Fig. 7.38 The distribution tank in the cabin maintains a pressure of
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Applied Fluid Mechanics (7th Edition)
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- 4. A submersible pump delivers 350 gpm of water to a height of 5 ft from the ground. The pump was installed 120 ft below the ground level and a draw down of 8 ft during the operation. If water level is 25 ft above the pump, determine the pump power.arrow_forwardFigure Q2 is a schematic of pump connected to the 80 mm diameter hose, if the average velocity of the water at the pump. C Neglect friction losses. is 8.50 m/s. Determine the required power output of the pumparrow_forward1.calculate the pressure in a hydraulic system if the pump delivers 180 liters /min, and the engine has a power capacity of 75kw.2.The engine has a given capacity of 60kw, calculate the power requirement in a hydraulic system tool , to know that the engine is capable to support the hydraulic system if a pump delivers 110 liters per minute and the pressure is 227bar.arrow_forward
- 3. A fire hydrant has an outlet diameter of 630 mm located 1.4 meters above the ground. If the water strikes the ground at a horizontal distance of 285 meters below the outlet, calculate the rate of discharge in gals. per min.arrow_forwardWater at 20°C is being pumped from tank 1 to tank 2 with given conditions. Calculate thepower of pump used in the system. (Both tanks are open to atmosphere)arrow_forwardc. A lorry is carrying 4000 liters of water. It is driven from Kota Kinabalu to Mesilau and it was discovered that the tank was only half full on arrival. The driver started with a full tank, climbed at a steady rate, and accomplished the 1000 meters elevation change in 3 hours. If the water leaked at a steady rate, compute how much work was spent to carry water to the top? Do not count the work done by the driver and the lorry to get there. Water weighs 9.8 N/liter.arrow_forward
- 1. The pressure in a hydraulic system has 120 bars and the engine power of 55.21 kw. Calculate the capacity of the pump to supply the system?2. The above pump had an actual flow of 90 liters/minute at 207 bar. Calculate the power of the hydraulic engine system?arrow_forwardA fuel pump is delivering 60 gal/min of oil with a specific gravity of 0.75. The total head is 45 meters. Find the motor that is capable of handling this pump. Assume the pump efficiency of 72 % and motor efficiency of 80 %arrow_forwardA fire starts in an apartment building in downtown Boston. When the firefighters arrive, they immediately get to work putting out the fire using a fire hose. The water for the fire hose is provided by a fire hydrant at ground level. Assume that the velocity of the liquid coming from the fire hydrant is 1.6 m/s, and that the pressure at the hose nozzle is atmospheric pressure (101000 Pa). a. The firefighters start with the ground floor, so there is no change in height between the fire hydrant and the hose nozzle. If the velocity of the water coming out of the nozzle is 12.8 m/s, find the pressure at the fire hydrant in units of Pa. b. After the ground floor fire is put out, another fire is spotted on another floor. A firefighter carrying the hose is lifted on a platform to the same height as the fire, which is 44.35 m above the ground. Assuming that the pressure found in part a) remains constant, what would be the new velocity of the water coming out of the nozzle at this new height?arrow_forward
- What is the horsepower requirement for a water pump, if the required flow rate is 200 gpm and the required pressure increase assigned to the pump is 32 psi?arrow_forwardExample Problem The fluid being pumped is oil with a specific gravity of 0.86. Calculate the energy delivered by the pump to the oil per unit weight of oil flowing in the system. Energy losses in the system are caused by check valve and friction losses as the fluid flows through the piping. The magnitude of such losses has been determined to be 1.86 N.m/N. Pump system. The volume flow rate through the pump shown in figure below is 0.014 m³/s. SOLUTION: +EO PB = 296 kPa Schedule 40 (From Pipe Supplier's Table) Wall Flow Area ao NO ao Thickness DN 50 Schedule 40 (ww) 0.002163 steel pipe 60.3 3.91 52.48 88.9 5.49 77.92 0.004768 08 GENERAL ENERGY EQUATION BETWEEN POINTS A & B: Flow PA/y + Z, + v/2g +h- hg -h = PB/y+ ZB + Vp²/2g 1.0 m %3D Therefore, Ty + 87/(A -A) + ("z - "z ) + ^/(°d - d) = 'y DN 80 Schedule 40 %3D Check valve From continuity equation, v = Q/A, find VA & VB VA = ? steel pipe PA =-28 kPa %3D Vs = ? Pump CHECK ANSWER h =42.9 m, or 42.9 N.m/N %3D 5.arrow_forwardA submersible pump deliver 350 gpm of water to a height of 5ft from the ground. the pump was installed 120 ft. below the ground level and a draw down of 8 ft. during the operation, if water level is 25 ft. above the pump, determine the pump powerarrow_forward
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