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Select a pump from the sample catalogue within the PIPE-FLO'" demo software to run a system that pumps water at 30°C from a reservoir up into a storage tower, 20 m higher, at a rate of 1800 L/min. Position the pump at the same level as the reservoir. On the suction side, use 8 m of DN 100 Schedule 40 pipe and install an angle foot valve and two standard elbows. On the discharge line use 30 m of DN 80 pipe, a fully open globe valve, and four standard 90° elbows. In addition to identifying a pump for the job, also determine NPSHR, NPSHA, pump efficiency, pressure at the pump outlet, and total head on the pump as reported on the FLO-Sheet® in PUMP-FLO®.
If you knew how much voltage you would generate with a given device and you needed to convert that electrical energy into mechanical work, how would you go about doing that?
A 50 x 50 cm duct is 10 m in length. Nitrogen enters at M1 = 3.0 and leaves at M2 = 1.7, with T2 = 280 K and P2 = 7 x 104 N/m2. Find the static and stagnation conditions at the entrance.
Calculate the load capacity of a precast concrete pile that is 14in. in diameter and is driven into soil resistance of 2.5 tons per square foot. Assume the top 5 feet of the pile cannot develop any shear resistance. Total pile length is 35 feet.
a manufacturer makes 7900000 memory chips per year. each chip takes 0.4 minutes of direct labor at 8hr. the overhead
Calculate the maximum stress at full pressure that could drive the growth of a crack. State, with justification, whether or not the service condition represents a high load on the structure
hot air at 207 kpa and 200degc enters a 2.5-cm-id tube at 6 ms. the tube is constructed of copper with a thickness of
A centrifugal pump, weighing 600 N and operating at 1000 rpm, is mounted on six springs of stiffness 6000 N/m each. Find the maximum permissible unbalance in order to limit the steady-state deflection to 5 mm peak-to-peak.
a gas turbine can assume an ideal brayton cycle has a pressure ratio of 10. it is connected to an electric generator
a 0.4 w cylindrical electronic component with a diameter of 0.3 cm and length 1.8 cm is mounted horizontally on a
1-kg of air at 200 kpa and 127 deg c is contained in a piston-cylinder device. air is now allowed to expand in a
two kilograms of zinc at 500c and 1 atmosphere is contained in a thermally insulated jacket. the system is compressed
The Cost of Recharging a Battery, A 12-V automotive storage battery is charged with a constant current of 2 amp for 24 hr.
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