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The pump-turbine system in the Figure draws water from the upper reservoir in the daytime to produce power for a city. At night, it pumps water from lower to upper reservoirs to restore the situation. For a design flow rate of 15,000 gal/min in either direction, the friction head loss is 17 ft. Estimate the power in kW: (a) extracted by the turbine and (b) delivered by the 1- Select coordinates and points 1 and 2 2- Write down your assumptions 3- Apply Energy Eq. and start finding P, V, and z for points 1 and 2 as well as head (h) values 4- Solve for unknown (1) Z₁ = 150 ft pump. Water at 20°C Pump- turbine (2) 2 Z₂ = 25 ft P1 V² + pg 2g P2 V + +Z2+hfriction + hTurbine - hpump [pressure head] 29 +Z1 = pg

The pump-turbine system in the Figure draws water from the upper reservoir in the daytime to produce power for a city. At night, it pumps water from lower to upper reservoirs to restore the situation. For a design flow rate of 15,000 gal/min in either direction, the friction head loss is 17 ft. Estimate the power in kW: (a) extracted by the turbine and (b) delivered by the 1- Select coordinates and points 1 and 2 2- Write down your assumptions 3- Apply Energy Eq. and start finding P, V, and z for points 1 and 2 as well as head (h) values 4- Solve for unknown (1) Z₁ = 150 ft pump. Water at 20°C Pump- turbine (2) 2 Z₂ = 25 ft P1 V² + pg 2g P2 V + +Z2+hfriction + hTurbine - hpump [pressure head] 29 +Z1 = pg

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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The pump-turbine system in the Figure draws water from the upper reservoir in the daytime to produce power for a city. At night, it pumps water from lower to upper reservoirs to restore the situation. For a design flow rate of 15,000 gal/min in either direction, the friction head loss is 17 ft. Estimate the power in kW: (a) extracted by the turbine and (b) delivered by the 1- Select coordinates and points 1 and 2 2- Write down your assumptions 3- Apply Energy Eq. and start finding P, V, and z for points 1 and 2 as well as head (h) values 4- Solve for unknown (1) Z₁ = 150 ft pump. Water at 20°C Pump- turbine (2) 2 Z₂ = 25 ft P1 V² + pg 2g P2 V + +Z2+hfriction + hTurbine - hpump [pressure head] 29 +Z1 = pg
Transcribed Image Text:The pump-turbine system in the Figure draws water from the upper reservoir in the daytime to produce power for a city. At night, it pumps water from lower to upper reservoirs to restore the situation. For a design flow rate of 15,000 gal/min in either direction, the friction head loss is 17 ft. Estimate the power in kW: (a) extracted by the turbine and (b) delivered by the 1- Select coordinates and points 1 and 2 2- Write down your assumptions 3- Apply Energy Eq. and start finding P, V, and z for points 1 and 2 as well as head (h) values 4- Solve for unknown (1) Z₁ = 150 ft pump. Water at 20°C Pump- turbine (2) 2 Z₂ = 25 ft P1 V² + pg 2g P2 V + +Z2+hfriction + hTurbine - hpump [pressure head] 29 +Z1 = pg
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