A closed tank contains liquified butane gas whose specific gravity is 0.60. The tank pressure is 1.7 Mpa gage which is also the equilibrium vapor pressure of butane at the pumping temperature. Suction lines losses is 1.5m of gas and the static elevation gain is 4m. What is the NET POSITIVE SUCTION HEAD AVAILABLE?(NPSHa)

A closed tank contains liquified butane gas whose specific gravity is 0.60. The tank pressure is 1.7 Mpa gage which is also the equilibrium vapor pressure of butane at the pumping temperature. Suction lines losses is 1.5m of gas and the static elevation gain is 4m. What is the NET POSITIVE SUCTION HEAD AVAILABLE?(NPSHa)

Sustainable Energy

2nd Edition

ISBN:9781337551663

Author:DUNLAP, Richard A.

Publisher:DUNLAP, Richard A.

Chapter14: Ocean Thermal Energy Conversion And Ocean Salinity Gradient Energy

Section: Chapter Questions

Problem 14P

See similar textbooks

Similar questions

Determine the minimum distance a pump should be located below the water surface elevation (Zs) in order to avoid cavitation. The total friction head loss (hLf) is 0.04 meters, and the sum of all minor losses is 0.2 meters. The atmospheric pressure is 101 kPa and the water vapor pressure at 20º C is 2.3388 kPa. The pump required net positive suction head (NPSHR) is 12 meters.
Point A in the suction pipe is 1 m below the pump. It is mounted with anopen manometer which reads a vacuum of 20 cm of mercury. The pipe is10 cm in diameter and the flow is 35 liters/s of water. Compute the totalenergy at point A with respect to a datum through the pump.
At point A where the suction pipe leading to a pump is 2.50 meters below the pump an open manometer indicates a vacuum of 9 in. of mercury. The pipe is 125 mm in diameter, the discharge is 35 liters per second of oil (sp. gr. = 0.80). Compute the total head at point A with respect to a datum at the pump.
A pump is delivering water at atmospheric pressure to an elevation of 400 m. Elevation of the pump centerline is –10 m. Find the static discharge head.
An orifice 150 mm diameter, having a coefficient of contraction of 0.65 discharges oil (SG=0.80) under a head of 8m. The average actual velocity of the jet is 11.65 m/s. Compute the head loss of the orifice.
It is required to pump water at the rate of 8.750 gpm from a reservoir whose surface is at an elevation of 180 ft to a tank whose bottom is at an elevation of 372 ft, The pump is placed at an elevation of 192 ft, the diameter of the suction pipe is 30 inch, the length of the pipe from the pump to the tank is 290 ft, and the estimated size of this pipe is 24 inch. The sum of the minor head losses in the suction and discharge pipe may be taken as 1.5 ft, if the maximum depth of water in the tank is to be 25 ft, what is the required horsepower of a pump for which the overall efficiency is 67 percent? Assume head loss due to friction in 290 ft + 2 ft Neglect all other head losses.
Tank A has an elevation of 100 m and Tank B has an elevation of 160 m. Since Tank A is lower than B, engineers have installed a pump near A to transfer fluid to B. The discharge in the pipe is at 0.65 cubic meters per second and pipe has a length of 1 km. with a diameter of 0.6 meters. If Hazen williams coefficient is equal to 120, compute the head loss in the pipe.
Pump Horsepower in Brine System. A pump pumps 0.200 ft3/s of brine solution having a density of 1.15 g/cm3 from an open feed tank having a large cross-sectional area. The suction line has an inside diameter of 3.548 in. and the discharge line from the pump a diameter of 2.067 in. The discharge flow goes to an open overhead tank and the open end of this line is 75 ft above the liquid level in the feed tank. If the friction losses in the piping system are 18.0 ft· lbf/lbm, what pressure must the pump develop and what is the horsepower of the pump if the efficiency is 70%? The flow is turbulent.
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 0.1m-Φ x 0.094m solid cylinder weighs 4 Newton. It is submerged in a liquid (SG = 0.8328) which is contained in a larger cylindrical tank whose diameter is 0.125m. Before immersion, the depth of the liquid was 0.075m. At what level will the solid cylinder float?
The total length of pipe connecting the two reservoirs is 100m. The pipe 250mm-diameter pipe delivers Q = 150 lit/sec of water. Hazen-Williams coefficient of the pipe is 120. If the difference in elevation of water surfaces at reservoir A and reservoir B is 147 meters;
P3: A preliminary design of a reservoir is shown inFigure.Draw the flow-net.Calculate the flow rate.How much water will flow in a day from the upstream to the downstream side.Calculate the porewater pressure at A.