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Q4/A volute centrifugal pump with an impeller diameter of 0.02 m has the following performance data when pumping water at the best efficiency point (bep). Impeller speed N = 58.3 rev/s capacity Q = 0.012 m3/s, total head Ah = 70 m, required NPSH = 18 m, and power = 12,000 W. Evaluate the performance data of a homologous pump with twice the impeller diameter operating at half the impeller speed, Then Calculate the specific speed for these two pumps.

Q4/A volute centrifugal pump with an impeller diameter of 0.02 m has the following performance data when pumping water at the best efficiency point (bep). Impeller speed N = 58.3 rev/s capacity Q = 0.012 m3/s, total head Ah = 70 m, required NPSH = 18 m, and power = 12,000 W. Evaluate the performance data of a homologous pump with twice the impeller diameter operating at half the impeller speed, Then Calculate the specific speed for these two pumps.

Elements Of Electromagnetics
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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Q4/A volute centrifugal pump with an impeller diameter of 0.02 m has the following performance data when pumping water at the best efficiency point (bep). Impeller speed N = 58.3 rev/s capacity Q = 0.012 m3/s, total head Ah = 70 m, required NPSH = 18 m, and power = 12,000 W. Evaluate the performance data of a homologous pump with twice the impeller diameter operating at half the impeller speed, Then Calculate the specific speed for these two pumps. *if you know the answer is Ns1=Ns2=816.4
Transcribed Image Text:Q4/A volute centrifugal pump with an impeller diameter of 0.02 m has the following performance data when pumping water at the best efficiency point (bep). Impeller speed N = 58.3 rev/s capacity Q = 0.012 m3/s, total head Ah = 70 m, required NPSH = 18 m, and power = 12,000 W. Evaluate the performance data of a homologous pump with twice the impeller diameter operating at half the impeller speed, Then Calculate the specific speed for these two pumps. *if you know the answer is Ns1=Ns2=816.4
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