19. The inlet line of a pump is 4-nominal schedule 40 PVC pipe that is 30 ft long andincludes one elbow and one well-rounded inlet. The pump conveys 0.5 ft/s ofwater at 60°F from a tank. The net positive suction head required by the pump is8 ft. Determine where the location of the water level in the tank should be withrespect to the pump impeller shaft to prevent cavitation.

Step 4: Total Head Losshf=hfriction+hminor=3.01+0.91=3.92ft Step 5: Solve for zSubstituting into the…

Answered: 19. The inlet line of a pump is…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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The value of (NPSH) for a pump is given by the manufacturer as 10 ft. Water is being pumped from a reservoir at min atmospheric pressure at a rate of 30 ft /s to a tank at atmospheric pressure. The water level in the reservoir is 5 ft below the pump. If the total head loss in the suction pipe is 5 ft, is the pump safe from cavitation effects? If a 2-in schedule 40 pipe of 150 m length was used downstream of the pump, what is the power delivered to the fluid? You may assume that the friction factor in the pipe is equal to 0.004.
Problem 2 The inlet line of a pump is 4-nominal schedule 40 PVC pipe that is 30 ft long and includes one elbow and one well-rounded inlet. The pump conveys 0.5 ft3/s of water at 60°F from a tank. The net positive suction head required by the pump is 8 ft. Determine where the location of the water level in the tank should be with respect to the pump impeller shaft to prevent cavitation.
3. A centrifugal pump is to be placed above a large, open water tank, as shown in the figure below. Water is pumped at a rate of I cu ft/s. At this flow rate the required net positive suction head, NPSHR, is 15 ft as specified by the pump manufacturer. The water temperature is 80°F and atmospheric pressure is 14.7 psi. Assume that the major head loss between the tank and the pump inlet is due to filter at the pipe inlet having a minor loss coefficient KL.-20. Other losses can be neglected. The pipe on the suction side of the pump has a diameter of 5 in. The water vapor pressure at 80°F is 0.5069 psia and y-62.22 lb/cu.ft. Determine Z1 for cavitation not to occur.. P1-Patm (1) (2) Reference plane
Determine the NPSH available for the system shown. The pump takes water at 30 ° C. The system is installed at sea level. The pump is at 2 m above the water level. The pipe measures 6 m and the diameter of 5 cm. The tubing has a sharp edge entry and the elbow is 90 ° threaded. The flow that the pump moves is 90 liters per minute. The material of the tubing is galvanized iron.
A centrifugal pump delivers 25 liters of water per second against a head of 10 meters and running at 1300 rpm requires 10 kW of power. Determine the discharge, head of the pump and power required if the pump runs at 1500 rpm. (Ans. 0.0288cumec or 1.73 cu.m./min , 13.31m, 15.36kw)
Water 2. In this system, d = 6 in., D = 6 ft, and =z2 = 12 ft. The water in the system is 13 cfs. machine a pump or a turbine? pressures at points A and B? losses. Pump 1. The discharge in the siphon is 2.80 cfs, D = 10 in., L1 = 3 ft, and L2 = 3 ft. Determine the head loss between the reservoir surface and point C. Determine the pressure at point B if three-quarters of the head loss (as found above) occurs between the reservoir surface and point B. 1 m REVIEW Home Work (1) Energy Equation Water T = 10ºC REPPER Water Same elevation Machine Elevation = 40 m -Elevation = 20 m Elevation 10 m 300 m + -300 m- 4. Assume that the head loss in the pipe is given by hL = 0.014(L/D)(V2/2g), where L is the length of pipe and AZ₂ AFL B Elevation 100 m L = 100 m D = 60 cm Water T= 10°C 3. A water discharge of 10 m3/s is to flow through this horizontal pipe, which is 1 m in diameter. If the head loss is given as 7V2/2g (V is velocity in the pipe), how much power will have to be supplied to the flow…
What is the maximum height the higher reservoir can sit and be filled using a fixed-speed pump with 1-1/4 HP of input and a 57% efficiency rating at 30 GPM of flow? The suction line is 30ft of 1-1/4” schedule 40 steel pipe. The discharge line is 1” schedule 40 steel pipe and is horizontal for 10 ft.
Problem 2: Control volume and Bernoulli Water drains from a tank through two r = 0.01 m diameter orifices: one located directly at the bottom of the tank, and the other at H/2. The tank has a diameter of R = 1m and the height of the water level is initially H = 1.5m. (1) Find the equations relating h and t for t t*. (2) Find the time, t*, it takes for the water level to drain to h(t*) = H/2. (3) Plot the relationship between the non-dimensional values (r/R)2√2g/H t (on the x-axis) and (on the y-axis) for t t*. R VH/2 h(t) → | H Figure 2: Draining tank with two orifices.
Determine the available suction head of the pump that is taking a gasoline at 204°C at a closed tank with a pressure 585 kPa gauge. the specific gravity of gasoline is 0.78 and it’s vapor pressure is 620 kPa absolute. the loss in suction pipe is 0.60 m and the pump center line is located 3.60 m above the gasoline level A. 8.66m B. 3.67m C. 7.66m D. 4.47m
Can You Solve This.
What is the horsepower requirement for a water pump, if the required flow rate is 200 gpm and the required pressure increase assigned to the pump is 32 psi?
A submersible pump is to be selected for the installation on a newly drilled deep well. The static water level (SWL) of the water inside the well is 8.7m from the natural ground level and the centerline of the discharge pipeline is 3.5 feet above the natural ground level. Based on the test pumping results from the SWL the flow velocity at the pipeline discharge was 8.09 ft/s and the design pressure is 40 psi to assure that the water can reach the elevated water tank. The total head losses are assumed to be 12 feet. a.) Find the total dynamic head (TDH) of the submersible pump needed for sizing in feet ? b.) What will be the suitable pipe diameter for the system riser in inches?

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