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Suppose the pump of Probs. 14-29 and 14-30 is used in a piping s stem that has the S stem requirement
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Fluid Mechanics: Fundamentals and Applications
- Centimuity oquation ofastendy frow. Terriellis problemfontflow of liquid througha hole) Problem:Detemine the absolute pressure at the inlet section of the pump. Flow rate of the pump Q=2,3 1/sec, l=1,5 m, d=40 mm, t=60°C. Static pressure in the tank p.=266,8 mmHg. Wedge resistance coefficient Sw=1,5, pipe inlet resistance coefficient Çin=0,5, the height of the oil level in the tank above the pump inlet section н-1,2 м, оil 1-12. H кран насосarrow_forwardFrom THERMOFLUIDS, M. MASSOUD Please hep me solve this problem i will really appreciate itarrow_forwardContainers A and B containing real fluid are combined like. While the difference of water levels of the reservoirs is h = ab (m); i-) Find the flow rate of the water passing from chamber A to chamber B. ii-) Draw the Energy and Piezometer lines of the system. g = 9.81 m / sarrow_forward
- 2. Suppose the pump of Fig. P14-23 is operating at efficient condition. The pipe diameter after the pump is "X" cm and pipe diameter before the pump is "Y" diameter. The friction losses along the pipe are negligible (no need to use Darcy Equation). But there are minor losses in the system. They are as follows; the sharp inlet is 0.50 m of water, each valve has a loss of 2.4 m of water, and each of the three elbows has a loss of 0.90 m of water. The contraction at the exit reduces the diameter by a factor of 0.60 (60% of the pipe diameter(after the pump)), and the loss of the contraction is 0.15 m of water. The volume flow rate is "K" Lpm. Density= 990kg/m. dynamic viscosity=1.002 x103 kg/m-s. Z1-Z2="L". The kinetic energy correction factor is 1. Determine (a) Required Head, (b) Required pump power (water Hp), (c) Reynolds number at the exit. V = 0 Reservoir Pump Given for Problem 2 X Y K L 1.8 148 6arrow_forwardA pump with a 25 cmrev and 1000 rpm supplies the following circuit. If the characteristios of the Sokg cylinder are v-0.1 ms, piston diameter60mm, rod diameter-25mm and friction factoe-2000 Ns/m and the characteristics of the 100kg cylinder are v0.02 m/s, piston diamcter-40mum, rod diameter-30mm and friction factor-s00 Nsim. Determine the flow rate and pressiare on cach cylinder. 25cm 100 kg lo aorem Boky v.0.1 Piston 6earrow_forwardA pump lifts water between two reservoirs, the diference of elevation is AH= 25 m, through a ductile iron pipe of diametet De 118 mm and lenght L= 397 m, and roughnouss e= 0.028 mm. The pump rotational speed is RPM- 3048 rpm and its performance characteristics curve ls given by hp- 30 - 9.44 Q2 where hp is in meter and Q in Lis. (1) neglecting minor losses calculate the flow through the pump (maximum two iterations). (2) What is the type of the purp to be used. elD 2.51 eID 5.74 2log 3.7 -2log 3.7 or R 0.9 ; where Qin gpm and H in ft; Ime3.28 ft; and 1 Us13.198 gpm Hp0.75 400 centrifugale 4,000 mixed 10,000 axialarrow_forward
- A centrifugal pump is used to pump a liquid with the properties given below. Liquid is pumped from a storage tank at 95 kPa (a) to a discharge tank at 300 kPa (a). The system configuration is given in the table below. Table 1: system configuration Suction Discharge 4 50 Length (m) Diameter (m) 0.07 0.055 12 90° bends (L/D-35) 5 T piece (L/D=7) Gate valve (L/D-35) 1 1 1 2 Static height (m) 25 Liquid density = 1100 kg.m³ Viscosity = 1.5 x 10-³ Pa.s Vapour pressure of the liquid = 25 kPa (a) Material of construction of pipe is commercial steel, ε = 000045 m Table 2: Pump data 0 10 20 30 40 Flowrate (m³.hr¹) Head (m) 55 56 51 36 6 NPSH (m) 0 2 6 11 19 22 3.1. Graphically determine the optimal operating point of the pump in the above system using the pump data in Table 2. 3.2. Determine the NPSH of the system and determine whether the pump will cavitate when used in the above system.arrow_forwardI need the answer as soon as possiblearrow_forwardQ1 Acentrifugal pump running at 500 rpm and at its maximum efficiency is delivering a head of 30 m ata flow rate of 60 litres per minute. If the rpm is changed to 1000, then the head H in metres and flow rate Qin litres per minute at maximum efficiency are estimated to be (a) H 60, Q = 120 (c) H= 60, Q = 480 (c) H = 120, Q = 120 (d) H = 120, Q = 30 %3D %3D %3Darrow_forward
- This course EHide block A centrifugal pump with the following impeller dimensions is used to pump water. The pump is running at 1000 rpm. The ideal head rise through the pump is 190 ft. b2 Poz 72 by The parameters of the impeller are as follows: r2= 9in, b2=3in, B2= 31° Take g= 9.81 m/s23 32.2 ft/s2 pw = 998 kg/m3 = 1.94 Slug/ft. Determine the theoretical flow rate in gpm Choose.. Determine the theoretical Power shaft in (hP) Choose...arrow_forwardA pump is needed to drain an excavation at a construction site. The excavation has alength of 50m, width of 50m, and a depth of 4m. The surface of the water in the excavation lies at adepth, H=3m, from the top the of the excavation. An old, radial flow, 1000W pump is immediatelyavailable for use; however, the total pump-motor efficiency, e, is only 50%. Estimate the drawdown inthe excavation in the first 4 hours of pumping. Neglect the change in H with increasing time. Neglectany head loss in the hose/pipe connected to the pump. (Hint: utilize the Pout equation, consider analternative definition of discharge as a change in volume over a change in time). Assume a specificweight of 9.79kN/m 3 .arrow_forward1. A pump 260mm suction pipe and a 150mm discharge pipe is used to deliver 58L/s of water. The suction gage reads 117 mm Hg vacuum and the discharge gage located 120 cm above the suction gage which reads 110 kPa gage. Determine: a. The total dynamic head (TDH) in meters 18.54 O 14.49 16.32 b. The pump efficiency in % if the power supplied by the motor is 15hp. 69.32 66.55 O 73.66arrow_forward
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