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 pump. Water at 20°C Pump- turtine Z # 150 f 44 = 25 R

Structural Analysis
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ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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The answer should be 410 hp and 540 hp. Show how it arrives on that answer in detailed solution. 

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 pump.
Water at 20°C
Pump-
turtine
Z
# 150 f
44
= 25 R
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 pump. Water at 20°C Pump- turtine Z # 150 f 44 = 25 R
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