Solution Found!
Energy may be stored for use during peak demand by pumping water to a high reservoir
Chapter 15, Problem 49P(choose chapter or problem)
Problem 49P
Energy may be stored for use during peak demand by pumping water to a high reservoir when demand is low and then releasing it to drive turbines when needed Suppose water is pumped to a lake 135 m above the turbines at a rate of 1.00 × 105 kg/s for 10.0 h at night. (a) How much energy (kWh) is needed to do this each night? (b) If all this energy is released during a 14-h day, at 75% efficiency, what is the average power output?
Questions & Answers
QUESTION:
Problem 49P
Energy may be stored for use during peak demand by pumping water to a high reservoir when demand is low and then releasing it to drive turbines when needed Suppose water is pumped to a lake 135 m above the turbines at a rate of 1.00 × 105 kg/s for 10.0 h at night. (a) How much energy (kWh) is needed to do this each night? (b) If all this energy is released during a 14-h day, at 75% efficiency, what is the average power output?
ANSWER:
Solution 49P
Step 1 of 3
We are required to find the energy and average power output.