Three pumps are connected in series. According to pump performance curves, the free delivery of each pump is as follows: Pump 1: 1600 L/min Pump 2: 2200 L/min Pump 3: 2800 L/min If the flow rate for this pump system is 2500 L/min, which pump(s) should be shut off? (a) Pump 1 (b) Pump 2 (c) Pump 3 (d) Pumps 1 and 2 (e) Pumps 2 and 3

Three pumps are connected in series. According to pump performance curves, the free delivery of each pump is as follows: Pump 1: 1600 L/min Pump 2: 2200 L/min Pump 3: 2800 L/min If the flow rate for this pump system is 2500 L/min, which pump(s) should be shut off? (a) Pump 1 (b) Pump 2 (c) Pump 3 (d) Pumps 1 and 2 (e) Pumps 2 and 3

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter10: Heat Exchangers

Section: Chapter Questions

Problem 10.19P

See similar textbooks

Similar questions

1) Interpret solar power in the context of environmental impact.2. What is the rigid dichotomy between windmill and diesel-driven pumps?3. For a normal windmill-driven pump at 3 m/s wind speed, the yield at a 10 m Head is typically 0.12 liters/s per m2 of rotor area, value windmills in the context of yield.
Three pumps are connected in parallel. According to pump performance curves, the shutoff head of each pump is as follows: Pump 1: 7 m Pump 2: 10 m Pump 3: 15 m If the net head for this pump system is 9 m, which pump(s) should be shut off? (a) Pump 1 (b) Pump 2 (c) Pump 3 (d) Pumps 1 and 2 (e) Pumps 2 and 3
PAY ATTENTION TO THE QUESTION : What is the resulting flow rate in the system if three pumps are used in parallel? (a) 0.483 m^3/s (b) 0.364 m^3/s (c) 0.333 m^3/s (d) 0.563 m^3/s 1. The Head -flowrate curve for a centrifugal pump is given by: HP = 28 -30Q2 Where, HP is in meter and Q is in m3/s . This pump is used to pump water for a system with the following (H-Q) curve: HS = 8 + 150Q2 Where, HS is in meter and Q is in m3/s . IT SAYS : if theee pumps are used in parallel PAY ATTENTION Multiple choice choose correct answer
The Head -flowrate curve for a centrifugal pump is given by: HP = 28 -30Q2 Where, HP is in meter and Q is in m3/s . This pump is used to pump water for a system with the following (H-Q) curve: HS = 8 + 150Q2 Where, HS is in meter and Q is in m3/s . What is the resulting flow rate in the system if three pumps are used in series? (a) 0.56 m^3/s (b) 0.48 m^3/s (c) 0.33 m^3/s (d) 0.36 m^3/s HINT: what is the resulting Flow-rate in the system if three pumps are used in series ? Choose correct option above
The net head delivered by a pump at a rotational speed of 1000 rpm is 10 m. If the rotational speed is doubled, the net head delivered will be (a) 5 m (b) 10 m (c) 20 m (d ) 40 m (e) 80 m
The length and diameter of a suction pipe of a single-acting reciprocating pump are 5m and 10 cm respectively. The pump has a plunger of diameter 15cm and a stroke length of 35 cm. The center of the pump is 3 m above the water surface in the pump. The atmospheric pressure head is 10.3 m of water and pump is running at 3r rpm. Determine: a. Pressure head due to acceleration at the beginning of the suction stroke, b. maximum pressure head due to acceleration and c. pressure head in the cylinder at the beginning and at the end of the stroke
A centrifugal pump with an overall efficiency of 0.56 rotates at 1650 rpm. The flow is purely radialat the inlet of the rotor. The pump has the following characteristics:Flow rate Q = 72 L/sInlet diameter D1 = 90 mmOutlet diameter D2 = 280 mmHead H = 25mWidth at the inlet b1 =20 mmWidth at the outlet b2 = 18 mmLeakage q = 2 L/sMechanical loss Pm = 1.41 kWBlade angle at the outlet β2 = 35ͦThe water density ?=998 ??/m^3Atmospheric pressure 101 kPa1) Draw the velocity triangles at the inlet and the exit of the impeller.2) Determine the magnitude of the absolute velocity of the flow (?) and the impeller velocity(U) at the inlet and outlet3) Determine the blade angle at the inlet.4) Determine the hydraulic, mechanical and volumetric efficiencies.5) Determine the minimum number of blades required for the slip to not exceed 0.9.6) Determine the static pressure difference (P2-P1) through the impeller by using Bernoulliequation.7) Determine the available NPSH if the pump is placed 2m above the…
A centrifugal pump with an overall efficiency of 0.56 rotates at 1650 rpm. The flow is purely radialat the inlet of the rotor. The pump has the following characteristics:Flow rate Q = 72 L/sInlet diameter D1 = 90 mmOutlet diameter D2 = 280 mmHead H = 25mWidth at the inlet b1 =20 mmWidth at the outlet b2 = 18 mmLeakage q = 2 L/sMechanical loss Pm = 1.41 kWBlade angle at the outlet β2 = 35ͦThe water density ?=998 ??/m^3Atmospheric pressure 101 kPa1) Draw the velocity triangles at the inlet and the exit of the impeller.2) Determine the magnitude of the absolute velocity of the flow (?) and the impeller velocity(U) at the inlet and outlet3) Determine the blade angle at the inlet.4) Determine the hydraulic, mechanical and volumetric efficiencies.5) Determine the minimum number of blades required for the slip to not exceed 0.9.6) Determine the static pressure difference (P2-P1) through the impeller by using Bernoulliequation.7) Determine the available NPSH if the pump is placed 2m above the…
Two identical centrifugal pumps connected in series are used to pump water between two storage tanks that are open to the atmosphere, through a cylindrical pipe with ID of 0.1 m on both the discharge and suction side. The total equivalent length on the suction and discharge sides are 20m and 40m respectively. The change in static head is 7m. Pump Data: Q( m3/s) 0 0.01 0.02 0.03 0.04 Δh (m) 23 21.5 18.5 11 3 Assume the friction factor f to be 0.02 and is constant throughout the range of flowrates. a) Determine the operating point of the system. b) Determine the power requirement for the pumping system if the pump efficiency is 75%.
Sketch and discuss in great detail the different pump curves including supply curve, system curve and efficiency curve.
A pump is designed to deliver 9500 L/min of water at a required head of 8 m. The pump shaft rotates at 1100 rpm. The pump specific speed in nondimensional form is (a) 0.277 (b) 0.515 (c) 1.17 (d ) 1.42 (e) 1.88
A centrifugal pump pumps water at a flow rate of 7 m³/s to a height of 10 m. If the pump works at the best efficiency point, find the pump impeller diameter, pump speed, the best efficiency value of the pump, the head at the best efficiency value, and the specific speed of the pump, given that CQ=0.15 CH=6 CP=0.75.