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

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
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?

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
一种液体的密度 70 磅/ft3 和粘度 0.12 cp 流到一个 4-计划 40 水平钢制管的长度在 600 米.额定流量是 35 半乳糖/分钟什么马力需要为此目的?
一个泵效率 80%水,在 60 ° F 和 30 半乳糖/分钟的速度形成到化工厂一英里外的大型水库.附表 3 在 40 管用于运输水管道的总 feiction 丢失.200ft.lbf/lb 化工厂通过冷静下来一些化学物质反应的一个反应堆水流和水终于被解除之前,已转移 800,000 因为/h.提升的植物是海平面以上的 873 英尺 ； 提升的储集层是海平面以上 928 英尺.什么最小马力是所需的泵?
水平钢管道系统包括一段的长度和直径 5.1 厘米 35 米.这条管道的末尾突然扩大到直径 8.0 厘米和长度的大管 20 米.水额定流量在 15.6 ° c 是 0.0065 m 3/条计算跨管道系统的压差.
18.
液态水抽到的贮油缸顶部开向大气的 0.0065m3 /s,于 20 ° c 的容积率在时.管道排放点是 16 米以上的泵和罐泵从直钢制管的等效长度为 46 米.如果管道的直径为 5.1 厘米和泵吸,是一百三十六 × 105pa 在排气管泵压力是什么?如果 65%效率电源要求是泵的什么?
19.
一个蒸馏的油将转入 1atm 绝对压力在坦克从 50psig 在压力容器的管道系统布置方式所示.直管系统中的速度的油流是 450 英尺计算最小马力输入一个泵有 60%的效率.油有 52 磅/ft3 密度和粘度的 3.4 cp.
20.
从储集层抽运的水,在 60 ° F 至一个 6-计划 120 管中的一座山的顶部 (ID = 5.501 中的） 在一个平均的线速度的 12 英尺/s.管道排放到大气中级别储集层级以上 4000 英尺.管道本身是如果泵和电机的整体效率是每千瓦特小时,每小时的能源成本,为 pimping 这种水是 5 美分吗?5000ft.

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