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3. At 200C and 98kPaa existing barometric pressure, fan develops a brake power of 95kW. If operates at 95kPaa and 320C with the same speed, what is the new break power of the fan?

3. At 200C and 98kPaa existing barometric pressure, fan develops a brake power of 95kW. If operates at 95kPaa and 320C with the same speed, what is the new break power of the fan?

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
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3. At 200C and 98kPaa existing barometric pressure, fan develops a brake power of 95kW. If operates at 95kPaa and 320C with the same speed, what is the new break power of the fan? 4. An mixed flow centrifugal blower having a flow capacity of 4500cfm has a suction and discharge diameter of 24in and 20in respectively. The manometer reading at the suction and discharge line are measured to be 10in-Hg vacuum and 20in-Hg. If the existing barometric conditions are 14.3psia and 550F, determine the required horsepower of the blower motor if the rated efficiency of the fan is 89%.
Transcribed Image Text:3. At 200C and 98kPaa existing barometric pressure, fan develops a brake power of 95kW. If operates at 95kPaa and 320C with the same speed, what is the new break power of the fan? 4. An mixed flow centrifugal blower having a flow capacity of 4500cfm has a suction and discharge diameter of 24in and 20in respectively. The manometer reading at the suction and discharge line are measured to be 10in-Hg vacuum and 20in-Hg. If the existing barometric conditions are 14.3psia and 550F, determine the required horsepower of the blower motor if the rated efficiency of the fan is 89%.
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(3) Given initial condition: P1=98 kPa , T1=200°C=473 K and the fan develops a brake power at this condition, BP1=95 kW

Now at the same speed, fan is operating at: P2=95 kPa , T2=320°C=593 K. Let BP2 be the brake power at this condition.

 

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