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Example 2 A pipe 50 cm in diameter carries water (10°C) at a rate of 0.5 m³/s. A pump in the pipe is used to move the water from an elevation of 30 m to 40 m. The pressure at section 1 is 70 kPa gage, and the pressure at section 2 is 350 kPa gage. What power in kilowatts and in horsepower must be supplied to the flow by the pump? If the pump is 85% efficient, how much electrical power is needed to operate the pump. Assume h₁ = 3 m of water and a₁ = α₂ = 1. Z₁ = 30 m P₁ = 70 kPa gage α₁ = 1.0 Water Q=0.5 m³/s -Pipe Pump Solution: =₁ = 40 m P₂ = 350 kPa gage α₁ = 1.0 D= 0.5 m Head loss in pipe = 3 m Pump Power 204 kW Electrical power = 240 kW

Example 2 A pipe 50 cm in diameter carries water (10°C) at a rate of 0.5 m³/s. A pump in the pipe is used to move the water from an elevation of 30 m to 40 m. The pressure at section 1 is 70 kPa gage, and the pressure at section 2 is 350 kPa gage. What power in kilowatts and in horsepower must be supplied to the flow by the pump? If the pump is 85% efficient, how much electrical power is needed to operate the pump. Assume h₁ = 3 m of water and a₁ = α₂ = 1. Z₁ = 30 m P₁ = 70 kPa gage α₁ = 1.0 Water Q=0.5 m³/s -Pipe Pump Solution: =₁ = 40 m P₂ = 350 kPa gage α₁ = 1.0 D= 0.5 m Head loss in pipe = 3 m Pump Power 204 kW Electrical power = 240 kW

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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If the pump is 85% efficient, how much electrical power is needed to operate the pump. Assume ht=3m of water and α1=α2=1. 

Example 2 A pipe 50 cm in diameter carries water (10°C) at a rate of 0.5 m³/s. A pump in the pipe is used to move the water from an elevation of 30 m to 40 m. The pressure at section 1 is 70 kPa gage, and the pressure at section 2 is 350 kPa gage. What power in kilowatts and in horsepower must be supplied to the flow by the pump? If the pump is 85% efficient, how much electrical power is needed to operate the pump. Assume h₁ = 3 m of water and a₁ = α₂ = 1. Z₁ = 30 m P₁ = 70 kPa gage α₁ = 1.0 Water Q=0.5 m³/s -Pipe Pump Solution: =₁ = 40 m P₂ = 350 kPa gage α₁ = 1.0 D= 0.5 m Head loss in pipe = 3 m Pump Power 204 kW Electrical power = 240 kW
Transcribed Image Text:Example 2 A pipe 50 cm in diameter carries water (10°C) at a rate of 0.5 m³/s. A pump in the pipe is used to move the water from an elevation of 30 m to 40 m. The pressure at section 1 is 70 kPa gage, and the pressure at section 2 is 350 kPa gage. What power in kilowatts and in horsepower must be supplied to the flow by the pump? If the pump is 85% efficient, how much electrical power is needed to operate the pump. Assume h₁ = 3 m of water and a₁ = α₂ = 1. Z₁ = 30 m P₁ = 70 kPa gage α₁ = 1.0 Water Q=0.5 m³/s -Pipe Pump Solution: =₁ = 40 m P₂ = 350 kPa gage α₁ = 1.0 D= 0.5 m Head loss in pipe = 3 m Pump Power 204 kW Electrical power = 240 kW
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