Ex 4: For a flow rate Of 2 m/s Of air (pg 12 N/m') what is the largest A2 that will cause water to be drawn up to the piczometer opening ? 25M n A 2 O.09 m2 1Somm water
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- 1. Assume a horizontal shaft handling water at 65 deg C (Pv=2.503 KPa, Density=980.5 m3/kg). The suction nozzle is 4.35 m below the pump centerline and the pressure gauge reading at this point is 221Kpag. Determine the NPSHa if the head loss is 0.82 m. If the NPSHr is 3m less than the NPSHa you got on question number 1, determine the pump suction specific speed at pump rotating at 1800rpm and Q=500gpmIf a pump requires a minimum of 2.75 m of NPSHA, how high can the centerline of the pump be located above the top of an open tank that supplies 27 C water to the pump? The barometer reads an average of 732 mmHg throughout the year. The tank is 1.82 m high. The pipe friction is 0.7 m and the velocity is 1.22 ?/? .Need detailed solution. During a trip to the beach (Patm = 1 atm = 101.325 kPa), a car runs out of gasoline, and it becomes necessary to siphon gas out of the car of a Good Samaritan. The siphon is a small-diameter hose, and to start the siphon it is necessary to insert one siphon end in the full gas tank, fill the hose with gasoline via suction, and then place the other end in a gas can below the level of the gas tank. The difference in pressure between point 1 (at the free surface of the gasoline in the tank) and point 2 (at the outlet of the tube) causes the liquid to flow from the higher to the lower elevation. Point 2 is located 0.75 m below point 1 in this case, and point 3 is located 2 m above point 1. The siphon diameter is 5 mm, and frictional losses in the siphon are to be disregarded. Determine (a) the minimum time to withdraw 4 L of gasoline from the tank to the can and (b) the pressure at point 3. The density of gasoline is 750 kg/m3. Answer: Δt = 53.1 s, P3 = 81.1 kPa
- Pls. answer thank you! In Francis turbine, the pressure gage leading to the turbine casing reads 385 kpa and center of spiral casing is 3.5 m above the tailrace. If the velocity of water entering the turbine is 9 m/s, what is the net head of the turbine?choose the correct answer Q1A- Using water jet forces to operate turbines in hydropower plant consider application of: * a) Bernoulli’s equation b) Darcy-Weisbach Equation c) Manning equation d) Momentum equation E-none of all above B-The main difference between the flow in pipes and the flow in open channels is * a) Existing the head loss b) Existing the free surface c) Existing the pressure drop d) None of all aboveThe 28-in-diameter pump in Fig. at 1170 r/min isused to pump water at 20°C through a piping system at14,000 gal/min. (a) Determine the required brake horsepower.The average friction factor is 0.018. (b) If there is65 ft of 12-in-diameter pipe upstream of the pump, how farbelow the surface should the pump inlet be placed to avoidcavitation?
- How do u get the H pump equation ?. Please write the detail(a) the total dynamic head (TDH) in meters (b) the water power (WP) in kW (c) the pump mechanical efficiency (%) if the power input to the pump is 15hpPlease anybody answer this ASAP,i need the answer in 40 min Air flows isentropically through a channel To = 310 ° C. The two ends have identical areas, namely A = 25 cm², pressure p1 = 160 kPa and p2 = 65 kPa Determine a). Mass flow rate, b). Throat area and C). Ma2
- A pump has a head of 20m at 450rpm. What is the increase in head developed by the pump if speed increase to 1000rpm? ANSWER: 78.76 mAt the gasoline transfer facility (ρᵣₑₗ=0,75) from the pond of storage to consumption, you want to install a pump to circulate a flow of 40(lt/s). The 400m long pipe is cast iron 150mm in diameter and consists of a check valve, a gate valve and 2 commercial medium radius elbows. The consumption tank is pressurized to 2,9 (kgf/cm²) gauge pressure. Decide the drive power of the pump in KW if its performance is 70%. •Additional data, pressure drop factors: •Retention valve Kᵣ = 1,5 •Gate valve open Kᵥ = 0,21 •Medium Radius Commercial Elbow Kc = 0,75 for each cubit •Storage pond outlet sharp angles Kₛ = 0,5 •Entrance to consumption pond Kₑ = 1 •Friction factor in pipes f = 0.026a. the total head loss due to friction (HL = hfs + hfd) in meters b. the total dynamic head in meters c. the water power in kW