A 37-cm-diameter centrifugal pump, running at 2140 r/minwith water at 20°C, produces the following performancedata:Q, m'ls | 0.0 | 0.05 | 0.10 | 0.15 | 0.20 | 0.25 | 0.30105 104 102 100 95202 | 228H, m8567P, kW100 | 115135171249(a) Determine the best efficiency point. (b) Plot C, versusCo. (c) If we desire to use this same pump family to deliver7000 gal/min of kerosene at 20°C at an input power of400 kW, what pump speed (in r/min) and impeller size(in cm) are needed? What head will be developed?

Answered: Image /qna-images/answer/33439646-3130-403b-b5f0-e761231ac63f.jpg

Answered: A 37-cm-diameter centrifugal pump,…

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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Albert bought a portable device to pump his truck tyres. On the manual, he found out that the device is a single stage, single-acting air compressor. Air delivery for this device is 30 bar at a speed of 1500 rev/min. The atmospheric condition of his location is 87 kPa and 20 ˚C, with a FAD of 0.22 m2/min. The clearance volume is 4% of the swept volume and the stoke/bore ratio is 1.3/1. Take “n” as 1.3, cp = 1.005 kJ/kg K, cv = 0.718 kJ/kg KDetermine the 1.volumetric efficiency in percentage to one decimal place.
A centrifugal pump operating under steady flow conditions delivers (2000 + K) kg/min of water from aninitial pressure of [100 + (K/2)] kPa to a final pressure of [1000 + 2K] Pa. The diameter of the inlet pipe tothe pump is 20 cm and the diameter of the discharge pipe is 8 cm. What is the work done? IMPORTANT NOTE: K=821
Albert bought a portable device to pump his truck tyres. On the manual, he found out that the device is a single stage, single-acting air compressor. Air delivery for this device is 30 bar at a speed of 1500 rev/min. The atmospheric condition of his location is 87 kPa and 20 ˚C, with a FAD of 0.22 m2/min. The clearance volume is 4% of the swept volume and the stoke/bore ratio is 1.3/1. Take “n” as 1.3, cp = 1.005 kJ/kg K, cv = 0.718 kJ/kg K 1.What is the swept volume in m3 to 6 decimal places?
290 300 с 320 a Problem 2: In which of the following cases the compressor will have the lowest absolute airflow: Corrected airflow Wa.101300/P2. √(T₂/288), kg/s inlet temperature, C inlet pressure, Pa 92500 94200 98100 b 28 20 25
1. A pump is used to lift 11 CMH of water at 20°C from a nearby fresh water lake whose free surface is 2.5 meters below the pump centerline to an elevated water dam whose free surface is 10 meters above the pump centerline. The suction pipe and discharge pipe are DN 8 SCH 40 and DN 10 SCH 40, respectively. The suction pipe has a total length of 5.4 m, while the discharge pipe has a total length of 21 m. Assume Hazen-Williams coefficient of 140 for both suction and discharge pipes and ignore minor head losses. a. Draw a schematic of the problem. Clearly indicate the elevations with respect to the pump centerline. b. Calculate the total dynamic head of the pump in meters. c. Calculate the water power output of the pump in kW. d. Calculate the brake power input to the pump in kW, assuming a pump mechanical efficiency of 75%. e. Calculate the electrical power input to the pump in kW, assuming a motor efficiency of 90%.
this question is very much related to mechanical engineering. The concept of propeller and supercharger is needed
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In case of centrifugal pump, the centrifugal force due to unbalanced mass generated at impeller having diameter 168 mm and mass is 3.46 kg running at 2880 rpm is 57. Option A: Option B: Option C: Option D: 76.40 N 90.13 N 56.96 N 40.32 N
Albert bought a portable device to pump his truck tyres. On the manual, he found out that the device is a single stage, single-acting air compressor. Air delivery for this device is 30 bar at a speed of 1500 rev/min. The atmospheric condition of his location is 87 kPa and 20 ˚C, with a FAD of 0.22 m2/min. The clearance volume is 4% of the swept volume and the stoke/bore ratio is 1.3/1. Take “n” as 1.3, cp = 1.005 kJ/kg K, cv = 0.718 kJ/kg K 1.What is the induced volume in terms of stroke volume, provide the coefficient values of the swept volume to 4 decimal places?
Albert bought a portable device to pump his truck tyres. On the manual, he found out that the device is a single stage, single-acting air compressor. Air delivery for this device is 30 bar at a speed of 1500 rev/min. The atmospheric condition of his location is 87 kPa and 20 ˚C, with a FAD of 0.22 m2/min. The clearance volume is 4% of the swept volume and the stoke/bore ratio is 1.3/1. Take “n” as 1.3, cp = 1.005 kJ/kg K, cv = 0.718 kJ/kg K 1.What is the induced volume per stroke in m3 to 6 decimal places?
A 3-bladed wind turbine with 250 kW generator has diameter of 50 m and tower height of 60 m. It is designed to have Cp of 0.25 at wind speed of 12 m/s when regulation starts. The cut-in and furling Speeds for the machine are 5 m/s and 20 m/s respectively. Mechanical and electrical efficiencies are 90 % and 95 %. By assuming the density of air as 1.225 kg/m3. Calculatea. What is power developed by the rotor at 12 m/s when regulation starts? b. If the tip-speed ratio at this wind speed is 4.2, then what is the rpm of the rotor? c. Calculate the actual torque developed. d. Calculate the maximum possible annual power output.
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