The 32-inch diameter pump has a performance curve as shown below. The pump operates at 1170 rpm in a system where the head curve is given by hp = 110 + 1.5Q² (in feet), with Q in units of thousands of gallons of water per minute. Estimate the brake horsepower (BHP) required for two pumps installed in parallel in the system.**Graph Explanation:**The graph displays performance curves for pumps with diameters of 28 inches, 32 inches, and 36 inches, operating at 1170 rpm. - **X-axis:** Represents the flow rate in thousands of U.S. gallons per minute.- **Y-axis (left):** Represents the total head in feet.- **Y-axis (right):** Represents the Net Positive Suction Head Required (NPSHr) in feet.Several curves are plotted on the graph, each corresponding to a different brake horsepower (BHP) value (5100 bhp, 3500 bhp, 3000 bhp, 2500 bhp, 2000 bhp, 1500 bhp). These curves indicate the relationship between the flow rate and the total head for the given horsepower.Another curve indicates the efficiency percentages ranging from 66% to 75%.**Options for BHP Estimation:**- 3500 HP- 2300 HP- 2000 HP- 2800 HP### How to Estimate:Identify the intersection of the performance curve for the 32-inch diameter pump with the system head curve. Determine the BHP for this point and then calculate the total BHP required for two pumps in parallel.

Answered: Image /qna-images/answer/0da9f040-f9ea-40d8-9883-eaaac97fc10e.jpg

The 32-in diameter pump has a performance curve as below. The pump is used at 1170 rpm in a system whose head curve is hp = 110 + 1.5Q² (in ft), with Q in units of thousands of gallons of water per minute. Please estimate the brake horsepower (BHP) required for two pumps in parallel installed in the system. Total head, ft 800 700 600 500 400 300 200 O 3500 HP O 2300 HP O 2000 HP O 2800 HP 0 n=1170 r/min 36-in dia. 32-in dia. 28-in dia. 4 8 NPSH 1500 bhp 16 87% 88% 20 24 12 U.S. gallons per minute x 1000 2000 bhp 87% 3000 bhp. 2500 bhp 3500 bhp 28 50 40 30 20 NPSH, ft

The 32-in diameter pump has a performance curve as below. The pump is used at 1170 rpm in a system whose head curve is hp = 110 + 1.5Q² (in ft), with Q in units of thousands of gallons of water per minute. Please estimate the brake horsepower (BHP) required for two pumps in parallel installed in the system. Total head, ft 800 700 600 500 400 300 200 O 3500 HP O 2300 HP O 2000 HP O 2800 HP 0 n=1170 r/min 36-in dia. 32-in dia. 28-in dia. 4 8 NPSH 1500 bhp 16 87% 88% 20 24 12 U.S. gallons per minute x 1000 2000 bhp 87% 3000 bhp. 2500 bhp 3500 bhp 28 50 40 30 20 NPSH, ft

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

See similar textbooks

Related questions

Q: A centrifugal pump delivers 3000,000 liters per hour of water to a pressurized thank whose pressure…

Q: A centrifugal pump delivers 25 liters of water per second against a head of 10 meters and running at…

Q: A 4x3-13 1750 rpm centrifugal pump equipped w/ an 11-inch diameter impeller requires 14.3bhp when…

Q: A single stage centrifugal pump has an impeller of 250 mm diameter which rotates at 1,800 rpm and…

Q: 1. A hydroelectric plant has 20 MW generator with an efficiency of 96 %. The generator is directly…

A: Given thatRunner PowerRP=20MWHg=150mloss og Head due to friction=4%Density of water…

Q: bar. Calculate the theoretical and actual flow if it has a volumetric efficiency of 88%, the real…

A: we have to determine the flow rate and power

Q: A pump has a displacement volume of 6 in^3. It delivers 24 gpm at 1000 rpm and 1000 psi. If the…

A: The displacement volume is The rotational speed is The pressure is The input torque is The discharge…

Q: A pump has a displacement volume of 6 in^3. It delivers 24 gpm at 1000 rpm and 1000 psi. If the…

A: The theoretical torque required.Given:The displacement volume is .The rotor speed is .The pressure…

Q: Using affinity laws, develop a pump curve and BHP curve for a 1 ½" AB pump for a 6" impeller. Use a…

Q: A centrifugal pump transports water between two reservoirs. The pump has an outer diameter of 15 cm,…

A: The outer diameter of the pump is..The inner diameter of the pump is..The width of the blade is..The…

Q: A radial flow pump operating at maximum efficiency at a specific speed of 2300 is to deliver 260gpm…

Q: A centrifugal pump impeller has an external diameter of 1.2 m and internal diameter of 0.8 m. The…

A: As per honor code and answering guidelines I can answer 1st three subparts at a time.If you want…

Q: A centrifugal pump delivers 1.8m3 water against a head of 30m when rotating at 1200rpm. The diameter…

Q: A good curve-fit to the head vs. flow for the 32-inch pump in the image shown below is:…

A: Pump curve equation, H=500-2.9*10-7Q2 Pump speed, N=1170 rev/min Pipe length, L=900 ft Pipe…

Q: A six stage centrifugal pump delivers 120 lit/sec against a net pressure rise of 51 kg/cm. Determine…

A: Answer: (a) The specific speed of centrifugal pump is 17.9430 rpm. (b) The "radial" impeller will be…

Q: For Questions 3 to 5 A certain centrifugal pump was tested and its performance curves can be…

A: To find: The efficiency of the pump. Given: The head is H=340-1.2Q2 ft. The Break power is…

Q: . A centrifugal pump has r1 = 6 in., r2 = 12 in., b1 = 3 in., b2 = 2 in., β1 = 20°, β2 = 10° and…

A: Given:water density, ρ=62.4 lb/ft3r1=6 in.r2=12 in.b1=3 in.b2=2 in.β1=20oβ2=10oN=1200 rpm

Q: A double acting reciprocating pump running at 40 rpm is discharging 1.0 m3/ minute. The pump has a…

Q: The Head -flowrate curve for a centrifugal pump is given by: HP = 28 -30Q2 Where, HP is in meter and…

Q: 5. What is the overall efficiency of a pump driven by an 11 bhp power source that delivers fluid at…

Concept explainers

Applied Fluid Mechanics

A fluid is a substance that is continuously deformed by the application of shear stress. The rate of deformation of a fluid depends on its viscosity. The fluid tries to flow when it interacts with some other system.

Question

The 32-inch diameter pump has a performance curve as shown below. The pump operates at 1170 rpm in a system where the head curve is given by hp = 110 + 1.5Q² (in feet), with Q in units of thousands of gallons of water per minute. Estimate the brake horsepower (BHP) required for two pumps installed in parallel in the system.

**Graph Explanation:**
The graph displays performance curves for pumps with diameters of 28 inches, 32 inches, and 36 inches, operating at 1170 rpm.

- **X-axis:** Represents the flow rate in thousands of U.S. gallons per minute.
- **Y-axis (left):** Represents the total head in feet.
- **Y-axis (right):** Represents the Net Positive Suction Head Required (NPSHr) in feet.

Several curves are plotted on the graph, each corresponding to a different brake horsepower (BHP) value (5100 bhp, 3500 bhp, 3000 bhp, 2500 bhp, 2000 bhp, 1500 bhp). These curves indicate the relationship between the flow rate and the total head for the given horsepower.

Another curve indicates the efficiency percentages ranging from 66% to 75%.

**Options for BHP Estimation:**

- 3500 HP
- 2300 HP
- 2000 HP
- 2800 HP

### How to Estimate:
Identify the intersection of the performance curve for the 32-inch diameter pump with the system head curve. Determine the BHP for this point and then calculate the total BHP required for two pumps in parallel.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1: Determining the given data

VIEW

Step 2: Finding pump head Hp

VIEW

Step 3: Finding discharge if the pumps are parallel

VIEW

Step 4: Finding BHP

VIEW

Solution

VIEW

Step by step

Solved in 5 steps with 5 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.

Similar questions

A) Calculate by hand the net head delivered and the efficiency of the pump at flow rate of 63 L/s. B) Use excel sheet and its formula to solve the equations and plot the pump head, power input, and efficiency versus the pump flow rate
The system curve for a water supply system is shown in the figure below (i.e., red curve). If a 7-inch pump is operating at 1160 rpm, what will be the discharge of water through the system in GPM? Curve no. 2175 Min. Imp. Dia. 6.25" Size 5 x 4 x 7.0 40 HEAD IN FEET 30 25 W 20 10 5 L/SEC 5 7.00" (178mm) 6.75" (171mm) 6.50" (165mm) 15 6.25" (159mm) 7.25" (184mm) O 150 GPM Laco O 350 GPM O 450 GPM O 250 GPM 10 Model 4075 FI & CI Series 15 70% 20 "Dede de 088 A. 25 REQUIRED NPSH 90 1160 RPM November 1, 2010 TM 90- N 00 30 8800 877 1HP(.75KW) de (5 60% ox 35 -10% 5% Tolo 10. 3HP(2.2KW) 2HP(1 5KW). 15HP(1 1KW). CURVES BASED ON CLEAR WATER WITH SPECIFIC GRAVITY OF 1.0 ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ 75 150 225 300 375 450 525 600 675 FLOW IN GALLONS PER MINUTE 45 LOWONG FEET 15 12 9 6 0 6 5 + 2 1 750 NPSH HEAD IN METERS 45 36 OG KPO 27 18 -9 -70 -60 -50 -40 20 10 -0 HEAD IN KILOPASCALS
For Questions 3 to 5 A certain centrifugal pump was tested and its performance curves can be approximated as follows: H = 340 - 1.2(Q^2), in feet BP = (0.0521Q^3) + (1.250^2)+(11.042Q) + 134.5, in horsepower where Q is in ft^3/s. Question 3 If a single pump is used to deliver water of a system which requires a total of 8 ft^3/s, what is the efficiency of the pump (in %)? Take the specific weight of water to be 62.4 lbf/ft^3. Round your answer to 2 decimal places.
A pump is tested in the laboratory and the following data were obtained. Determine the pump efficiency. Torque Rotational speed = Inlet pressure = Outlet pressure Volume flow rate= = Height to inlet gage = Height to outlet gage Inlet flow line = Outlet flow line = Fluid T @ P1 P2 = 206.8 kPa = 0.063 m³/s = 0.61 m = 1.52 m 10-nominal schedule 40 8-nominal schedule 40 Z1 Z2 = 47.5 J = 3600 rpm = 17.25 kPa octane
The answer is one of the options below please solve carefully and circle the correct option Please write clear .
Kindly answer as soon as possible. Thank yoouu!!
### Based on the study of pressure losses in pumps and pipelines: Q122. Find the catalogued model of a suitable centrifugal pump for the following parameters: Upsetting height of 1570 mwc Suction height of 108 mwc Power 447 hp
A gear pump has a 80-mm outside diameter, a 55-mm inside diameter, and a 25-mm width. If the actual pump flow rate at 2300 rpm and rated pressure is 140 LPM, calculate the Theoretical Flow Rate, QT (m3/s). (Hint: first calculate the Displacement Volume) Group of answer choices 0.00361 m3/s 0.00233 m3/s 0.00254 m3/s 0.00262 m3/s
1.1. The pump whose performance curves are shown in Figure P1.1 is operated at 1750 rpm and is connected to a 2-in. i.d. galvanized iron pipe 175 ft long. What will be the flow rate and power input? 100 90 Head curve 80 70 60 50 40 -Efficiency 30 20 10 20 40 60 80 100 120 140 160 180 Flow rate (gpm) FIGURE P1.1 Performance curves for a pump with a 9-in. impeller and speed 1750 rpm. 1.7. If the pump and pipe arrangement of Problem 1.1 now includes an elevation increase of 30 ft, what flow will result? Head rise (ft); efficiency ()
Perform operations in excel .... (and shows the formulas) Company Z has the following historical information about sales for one of its hydraulic pump models for the last 4 years: (PICTURE OF THE PERIOD AND YEARS) On the other hand, the manufacturing process used by Company Z is sequential* and has the following characteristics: (THE OTHER IMAGE) * Sequential; in the sense that the output of Mi is the input of Mi+1.** In any order; in the sense that they can be interchanged, e.g. MA -> MB or MB -> MA. The company's operating costs are as follows: Cost per final unit produced "defect free": $100 Cost per final unit produced "with defects": $150 Cost per excess inventory (units "free of defects"): $50 Cost per inventory shortage ("defect free" units): $200 Revenue per final "defect free" unit produced and sold: $250 We have the following operating conditions: - Any sequence of 3 machines can be used.- Only one machine can be used once, within the same sequence of machines.- You…
6
Displacement (c): 0.2 in3/revShank diameter (d) = 0.625 in.Piston diameter (D) = 1.5 in.Rotation speed (n): 1725 RPMPressure (P): 600 PSIStroke (L) = 18in. a) Calculate the theoretical flow rate of the pump in in3/min and US GPM.Theoretical flow (Q) = Theoretical displacement (C) x Speed of revolution (n)Theoretical flow (Q) = 0.2 in3/rev x 1725 rpmTheoretical flow (Q) = 345 in3/min = 1.49 US GPM b) Calculate the cylinder output speed in in/s.Cylinder output speed (VS) = Piston side flow (Q) / Piston area (Ap)Cylinder output speed (VS) = (Displacement x Speed of revolution) / Piston area (Ap)Cylinder output speed (VS) = (0.2 in3/rev x 1725 RPM) / 1.77 in2Cylinder output speed (VS) = (0.2 in3/rev x 1725 RPM) / 1.77 in2Cylinder output speed (VS) = 196.02in/s = 196.02 / 60s = 3.20 in/s Questions: c) Knowing the output velocity (ram speed), calculate the rod side flow in GPM when the ram is extending. d) Calculate the piston exit time in seconds. e) Calculate the piston entry time in…