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Oil with a specific gravity of 0.93 and a dynamic viscosity of
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Applied Fluid Mechanics (7th Edition)
- A 2-inch diameter hose is conveying water at a flow rate of 20 gpm from point A to point B. The pressure at point A is 40 psi. The elevation at point A is 20 ft above mean sea level (MSL) and the elevation at point B is 18.5 ft above MSL. The hose is 100 ft long. Determine (a) pressure at point B if there is no head loss, (b) pressure at point B if head loss is 1 inch per foot of pipe length. (c) Compare pressure at B with and without headloss - what impact does head loss have?arrow_forwardThe picture below depicts a system for delivering chocolate ganache in liquid form. Thenozzle on the end of the hose requires 140 kPa of pressure to operate effectively. Thehose is smooth plastic with an ID of 25 mm. The chocolate has a specific gravity of 1.1and a dynamic viscosity of 2.0 X 10-3 Pa*s. If the length of the hose is 85 m and there is a change in height of 10 m, determine(a) the power delivered by the pump to the ganache and(b) the pressure at the outlet of the pump.Neglect the energy losses on the suction side of the pump. The flow rate is 85 L/min.arrow_forwardA Venturimeter has 400mm diameter at the main and 150mm at the throat. If the difference of pressure is 250mm of mercury and the meter coefficient is 0.97, calculate the discharge of oil through the Venturimeter. Take specific gravity of oil as 0.75.arrow_forward
- Inside a pipe with a constant cross section, water flows. Calculate the total number of lost heads in (ft). Between suction and discharge is a 100-foot elevation difference.arrow_forward1. An 80 mm schedule 40 steel pipe is 1800 m long and carries a lubricating oil between 2 points A and B such that the Reynolds number is 1200. Point B is 10 m higher than point A. The oil has a specific gravity of 0.85 and dynamic viscosity of 6.51 X 10-1 Pa.s. If the pressure at A is 345 KPa, calculate the pressure @ B. 2. Determine the energy loss for a sudden contraction from a 4 in schedule 80 steel pipe to a 1.5 in schedule 80 pipe for a flow rate of 250 gal/min. 3. Determine the equivalent length in meters of pipe of a quarter open gate valve placed in a DN 250 schedule 40 pipe.arrow_forwardA differential mercury manometer is used to measure the pressure drop across an orifice meter as liquid benzene flows steadily in a pipe. Sketch this system showing the section of pipe with the manometer and the orifice meter, showing your understanding of what these devices are. a) Taking the benzene to be flowing from left to right on your sketch, sketch the mercury in the manometer making it clear whether the mercury level in the left or the right arm would be higher. b) If this system is to accommodate benzene flow rates leading to pressure drops of up to 3.5 atm, at least how tall must the manometer be (in m)? That is, what is the maximum height difference in manometer fluid levels that needs to be measured?c) If the flowing fluid were to be air instead of benzene, would the mercury level difference in the manometer be larger, smaller, or the same as with the flowing liquid benzene? Briefly explain.arrow_forward
- A venture meter having a throat diameter d2 of 100mm is fitted into a pipeline which has a diameter d1 of 250mm through which oil of specific gravity 0.9 is flowing. The pressure difference between the entry and throat tapings is measured by a u tube manometer containing mercury of specific gravity 13.6 and the connections are filled with the oil flowing in the pipeline. If the difference of level indicated in the u-tube is 0.63m, calculate the theoretical discharge through the meter.arrow_forwardThe pressure through a section of pipe is 21 PSI and the velocity of the fluid is 1 ft/sec. If the velocity were increased to 4 ft/sec, what would the pressure drop be?arrow_forwardNatural gas, which is essentially methane is being pumped through a 1m ID steel pipe for a distance of 100 km at a rate of 2 kmol/s. It can be assumed that the flow is isothermal at 289 K. The pressure at the end of the line is 170 kPa. Assuming that the viscosity of the gas is 1.08963x10-5 Pa-s, calculate the pressure (kPa) at the pump discharge.arrow_forward
- Oil of specific gravity 0.8 flows through a pipe of 0.25 m diameter. An orifice of 0.1 m diameter is fitted to the pipe to measure the flow rate. A mercury manometer fitted across the orifice records a reading of 0.8 m. Calculate the coefficient of discharge of the orifice meter if the flow rate measured by it is 0.082 m3/s.arrow_forwardA storage reservoir supplies water to a pressure turbine under a head of 20 m. If the flow rate is 500 liters per second the head loss in the 300 mm pipe supplying the turbine is 2.5 m. Determine the pressure at the entrance of the turbine. If a negative pressure of 30 kPa exists at the 600 mm diameter section of the draft tube (exit tube) below the turbine 1.5 m below the supply line, estimate the energy absorbed by the turbine in kW neglecting losses between the entrance and exit of the pipe. Find also the output of the turbine assuming an efficiency of 85%arrow_forwardAt a flow rate of 10 LPM, what will gonna happen if the pressure drops over 90 seconds from 0.657 kPa to 0.491 kPa? HYDROSTATIC PRESSUREarrow_forward
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