英语翻译15.A liquid of density 70 lb/ft3 and viscosity 0.12 cp f

英语翻译
15.
A liquid of density 70 lb/ft3 and viscosity 0.12 cp flows through a 4-in schedule 40 horizontal steel pipe of length 600m .the volumetric flow rate is 35 gal/min.what horsepower is needed for this purpose?
16.
A pump with 80% efficiency water at 60°F and at a rate of 30 gal/min form a large reservoir to a chemical plant a mile away.A 3-in schedule 40 pipe is used to transport the water and the total feiction loss of the pipeline is 200ft.lbf/lb.in the chemical plant,water flows through a reactor to cool down some chemicals of reaction and 800,000 btu/h has been transferred before the water is finally discharged.The elevation of the plant is 873 ft above sea level; the elevation of the reservoir is 928 ft above sea level.What minimum horsepower is required by the pump?
17.
A horizontal steel piping system consists of a section of diameter 5.1 cm and length 35m .the end of this pipe is suddenly expanded to a larger pipe of diameter 8.0cm and length 20m.the water volumetric flow rate at 15.6°c is 0.0065m 3/s.calculate the pressure difference across the piping system.
18.
Liquid water is pumped to the top of a storage tank open to the atmosphere at a volumetric rate of 0.0065m3 /s at 20°c.the discharge point of the pipe is 16m above the pump,and the equivalent length of straight steel pipe from the pump to the tank is 46m.if the diameter of the pipe is 5.1cm and the pump suction is 1.36×105pa,what is the pressure at the discharge side of the pump?If the efficiency of the pump is 65%,what is the power requirement?
19.
A distilled oil is transferred from a tank at 1atm absolute pressure to a pressure vessel at 50psig by means of the piping system arrangement as shown.The oil flows at a rate of straight pipe in the system is 450ft.calculate the minimum horsepower input to a pump having an efficiency of 60 percent.The oil has a density of 52lb/ft3 and viscosity of 3.4 cp.
20 .
Water at 60°F is pumped from a reservoir to the top of a mountain through a 6-in schedule 120 pipe (ID=5.501 in) at an average linear velocity of 12ft/s .the pipe discharges into the atmosphere at a level 4000 ft above the level in the reservoir.The pipeline itself is 5000ft.if the overall efficiency of the pump and the motor is 5 cents per kilowatt-hour,what is the hourly energy cost for pimping this water?